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\ud330\ub9b0\ub4dc\ub86c\uc758 \uac1c\ub150\uc744 \ubcf5\uc2b5\ud558\uace0, C++\uc744 \ud1b5\ud574 \uc54c\uace0\ub9ac\uc998\uc744 \uad6c\ud604\ud574\ubcf4\ub294 \uc2dc\uac04\uc744 \uac00\uc9c0\uaca0\uc2b5\ub2c8\ub2e4. \ubb38\uc81c \uc124\uba85 \uc8fc\uc5b4\uc9c4 \uc815\uc218 N\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub54c N\ubcf4\ub2e4 \ud06c\uac70\ub098 \uac19\uace0, N\ubcf4\ub2e4 \uc791\uac70\ub098 \uac19\uc740 \ubc94\uc704 \ub0b4\uc5d0\uc11c \uc18c\uc218\uc774\uba74\uc11c \ud330\ub9b0\ub4dc\ub86c\uc778\u2026","rel":"","context":""C++ \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"C++ \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/c-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-2\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27966,"url":"https:\/\/atmokpo.com\/w\/27966\/","url_meta":{"origin":26854,"position":3},"title":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \ubc30\uc5f4\uacfc \ub9ac\uc2a4\ud2b8","author":"root","date":"2024\ub144 10\uc6d4 27\uc77c","format":false,"excerpt":"\uc791\uc131\uc790: \uc870\uad11\ud615 \ub0a0\uc9dc: [\ub0a0\uc9dc] \ubb38\uc81c \uc124\uba85 \ub2f9\uc2e0\uc740 \uc815\uc218\ub85c \uad6c\uc131\ub41c \ubc30\uc5f4\uc744 \uc785\ub825\ubc1b\uc544 \uac01 \uc6d0\uc18c\uc758 \ucc28\uc774\ub97c \ub098\ud0c0\ub0b4\ub294 \uc0c8\ub85c\uc6b4 \ubc30\uc5f4\uc744 \ubc18\ud658\ud574\uc57c \ud569\ub2c8\ub2e4. \uc0c8\ub85c\uc6b4 \ubc30\uc5f4\uc758 i\ubc88\uc9f8 \uc6d0\uc18c\ub294 \uc785\ub825 \ubc30\uc5f4\uc758 i\ubc88\uc9f8 \uc6d0\uc18c\uc640 \uadf8 \ub2e4\uc74c \uc6d0\uc18c\uc758 \ucc28\uc774\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9 \uc6d0\uc18c\ub294 \ub2e4\uc74c \uc6d0\uc18c\uac00 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \ud2b9\ubcc4\ud55c \ucc98\ub9ac\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uc785\ub825 \uc815\uc218 \ubc30\uc5f4 nums (\uc0ac\uc774\uc988 n, 1 \u2264 n\u2026","rel":"","context":""\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26986,"url":"https:\/\/atmokpo.com\/w\/26986\/","url_meta":{"origin":26854,"position":4},"title":"\ud30c\uc774\uc36c \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \u2018\uc88b\uc740 \uc218\u2019 \uad6c\ud558\uae30","author":"root","date":"2024\ub144 10\uc6d4 27\uc77c","format":false,"excerpt":"\uc791\uc131\uc790: \uc870\uad11\ud615 | \ub0a0\uc9dc: 2024\ub144 11\uc6d4 26\uc77c \ubb38\uc81c \uc124\uba85 \uc8fc\uc5b4\uc9c4 \uc22b\uc790 n\uc774 \u2018\uc88b\uc740 \uc218\u2019\ub77c\uba74, \uadf8 \uc218\ub97c \uad6c\ud558\ub294 \ubb38\uc81c\uc785\ub2c8\ub2e4. \u2018\uc88b\uc740 \uc218\u2019\uc758 \uc870\uac74\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. \u2018\uc88b\uc740 \uc218\u2019\ub294 \ub450 \uc790\ub9ac \uc774\uc0c1\uc758 \uc790\uc5f0\uc218\uc774\ub2e4. \uac01 \uc790\ub9ac\uc758 \ud569\uc774 \ud640\uc218\uc778 \uc218\ub97c \u2018\uc88b\uc740 \uc218\u2019\ub85c \uc815\uc758\ud55c\ub2e4. \uc8fc\uc5b4\uc9c4 n \uc774\ud558\uc758 \ubaa8\ub4e0 \u2018\uc88b\uc740 \uc218\u2019\ub97c \ucc3e\uc544\ub0b4\uc5b4 \ub9ac\uc2a4\ud2b8\ub85c \ubc18\ud658\ud558\ub77c. \uc608\ub97c \ub4e4\uc5b4, n\uc774 30\uc77c\u2026","rel":"","context":""\ud30c\uc774\uc36c \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"\ud30c\uc774\uc36c \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/%ed%8c%8c%ec%9d%b4%ec%8d%ac-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":28039,"url":"https:\/\/atmokpo.com\/w\/28039\/","url_meta":{"origin":26854,"position":5},"title":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uce74\ub4dc \uac8c\uc784","author":"root","date":"2024\ub144 10\uc6d4 27\uc77c","format":false,"excerpt":"\uc791\uc131\uc790: \uc870\uad11\ud615 \uc791\uc131\uc77c: [\ub0a0\uc9dc] 1. \uc18c\uac1c \ucf54\ub529\ud14c\uc2a4\ud2b8\ub294 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c\uc790 \ucc44\uc6a9 \uacfc\uc815\uc758 \uc911\uc694\ud55c \ubd80\ubd84\uc73c\ub85c, \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c \ud480\uc774 \ub2a5\ub825\uc744 \ud3c9\uac00\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub85c \uce74\ub4dc \uac8c\uc784 \uad00\ub828 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uce74\ub4dc \uac8c\uc784\uc740 \ub9ce\uc740 \uc0ac\ub78c\ub4e4\uc5d0\uac8c \uc775\uc219\ud55c \ud615\ud0dc\uc758 \uac8c\uc784\uc774\uba70, \uc774\ub97c \ud1b5\ud574 \uae30\ubcf8\uc801\uc778 \uc54c\uace0\ub9ac\uc998 \uc0ac\uace0\ub97c \ud560 \uc218 \uc788\ub294 \uae30\ud68c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub294 \uc6f9 \uae30\ubc18 \ud658\uacbd\uc5d0\uc11c\u2026","rel":"","context":""\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c"\uc5d0\uc11c","block_context":{"text":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c","link":"https:\/\/atmokpo.com\/w\/category\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/26854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/comments?post=26854"}],"version-history":[{"count":1,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/26854\/revisions"}],"predecessor-version":[{"id":26855,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/posts\/26854\/revisions\/26855"}],"wp:attachment":[{"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/media?parent=26854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/categories?post=26854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atmokpo.com\/w\/wp-json\/wp\/v2\/tags?post=26854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":26854,"date":"2024-10-27T11:53:12","date_gmt":"2024-10-27T11:53:12","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=26854"},"modified":"2024-11-26T07:28:04","modified_gmt":"2024-11-26T07:28:04","slug":"%ec%9e%90%eb%b0%94-%ec%bd%94%eb%94%a9%ed%85%8c%ec%8a%a4%ed%8a%b8-%ea%b0%95%ec%a2%8c-%ec%98%a4%ec%9d%bc%eb%9f%ac-%ed%94%bc-%ed%95%a8%ec%88%98-%ea%b5%ac%ed%98%84%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/26854\/","title":{"rendered":"\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uad6c\ud604\ud558\uae30"},"content":{"rendered":"

<\/p>\n

\uc628\ub77c\uc778 \ucf54\ub529\ud14c\uc2a4\ud2b8\uac00 \uc810\uc810 \ub354 \ub9ce\uc774 \uc694\uad6c\ub418\ub294 \ud604\ub300 \uc0ac\ud68c\uc5d0\uc11c, \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ud478\ub294 \ub2a5\ub825\uc740 \uac1c\ubc1c\uc790\uc5d0\uac8c \ud544\uc218\uc801\uc778 \ud6cc\ub96d\ud55c \uc2a4\ud0ac\uc785\ub2c8\ub2e4. \uc624\ub298\uc740 \uc218\ud559\uc801 \uac1c\ub150\uc744 \ud65c\uc6a9\ud55c \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ub2e4\ub8e8\uc5b4 \ubcfc \uac83\uc785\ub2c8\ub2e4. \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \uc624\uc77c\ub7ec \ud53c \ud568\uc218<\/strong>(Euler\u2019s Totient Function)\ub97c \uad6c\ud604\ud558\uace0, \uc774\ub97c \uc790\ubc14 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n

\uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub780?<\/h2>\n
\uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub294 \uc8fc\uc5b4\uc9c4 \uc591\uc758 \uc815\uc218 n<\/code>\uc5d0 \ub300\ud574, 1\ubd80\ud130 n<\/code>\uae4c\uc9c0\uc758 \uc815\uc218 \uc911\uc5d0\uc11c n<\/code>\uacfc \uc11c\ub85c\uc18c\uc778 \uc815\uc218\uc758 \uac1c\uc218\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc989, n<\/code>\uacfc \ucd5c\ub300\uacf5\uc57d\uc218\uac00 1\uc778 \uc815\uc218\uc758 \uac1c\uc218\ub97c \uc138\ub294 \ud568\uc218\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4:<\/p>\n
\n\u03c6(1) = 1<\/code> (1\uacfc \uc11c\ub85c\uc18c\uc778 \uc218\ub294 1 \uc790\uc2e0 \ubfd0)<\/li>\n \u03c6(2) = 1<\/code> (1, 2 \uc911\uc5d0\uc11c 2\uc640 \uc11c\ub85c\uc18c\uc778 \uc218\ub294 1)<\/li>\n \u03c6(3) = 2<\/code> (1, 2, 3 \uc911\uc5d0\uc11c 3\uacfc \uc11c\ub85c\uc18c\uc778 \uc218\ub294 1\uacfc 2)<\/li>\n \u03c6(4) = 2<\/code> (1, 2, 3, 4 \uc911\uc5d0\uc11c 4\uc640 \uc11c\ub85c\uc18c\uc778 \uc218\ub294 1\uacfc 3)<\/li>\n<\/ul>\n\uc774 \ud568\uc218\ub294 \ub2e4\uc591\ud55c \uc218 \uc774\ub860\uacfc \uc554\ud638\ud559 \ubd84\uc57c\uc5d0\uc11c\ub3c4 \uc911\uc694\ud558\uac8c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774\uc81c \uc774 \ud568\uc218\ub97c \uad6c\ud604\ud558\ub294 \ubb38\uc81c\ub97c \ud480\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n \ubb38\uc81c \uc124\uba85<\/h2>\n\uc8fc\uc5b4\uc9c4 \uc815\uc218 n<\/code>\uc5d0 \ub300\ud574, \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \uacc4\uc0b0\ud558\ub294 \ud568\uc218\ub97c \uad6c\ud604\ud558\uc2dc\uc624. \ud568\uc218\uc758 \uc785\ub825\uc740 \uc815\uc218 n (1 \u2264 n \u2264 10^6)<\/code>\uc774\uba70, \ucd9c\ub825\uc740 \u03c6(n)<\/code>\uc758 \uac12\uc785\ub2c8\ub2e4.<\/p>\n \ubb38\uc81c \ud574\uacb0 \uc804\ub7b5<\/h2>\n\uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \uad6c\ud558\ub294 \ubc29\ubc95\uc5d0\ub294 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\uc9c0\ub9cc, \ub2e4\uc74c\uacfc \uac19\uc740 \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud558\uc5ec \ud6a8\uc728\uc801\uc73c\ub85c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n \n\uc18c\uc778\uc218 \ubd84\ud574:<\/strong> \uba3c\uc800 n<\/code>\uc758 \uc18c\uc778\uc218\ub97c \uad6c\ud569\ub2c8\ub2e4. \uc18c\uc778\uc218\ub294 \uc815\uc218\uc758 \uacf1\uc73c\ub85c \ud45c\ud604\ud560 \uc218 \uc788\ub294 \uac00\uc7a5 \uc791\uc740 \uc18c\uc218\uc785\ub2c8\ub2e4.<\/li>\n \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uacc4\uc0b0:<\/strong> \u03c0(n)\uc758 \uc131\uc9c8\uc744 \uc774\uc6a9\ud558\uc5ec \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc218\uc2dd\uc73c\ub85c \ud45c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/li>\n<\/ol>\n\u03c6(n) = n * (1 - 1\/p1) * (1 - 1\/p2) * ... * (1 - 1\/pk)\n<\/code><\/pre>\n\uc704\uc758 \uc218\uc2dd\uc5d0\uc11c p1, p2, ..., pk<\/code>\ub294 n<\/code>\uc758 \uc18c\uc778\uc218\uc785\ub2c8\ub2e4. \uc774 \uc218\uc2dd\uc744 \ud1b5\ud574 \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \ube60\ub974\uac8c \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc790\ubc14 \ucf54\ub4dc \uad6c\ud604<\/h2>\n\uc774\uc81c \uc790\ubc14 \ucf54\ub4dc\ub97c \uc791\uc131\ud558\uc5ec \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \uad6c\ud604\ud574\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c \ucf54\ub4dc \uc2a4\ub2c8\ud3ab\uc740 \uc774 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4:<\/p>\n public class EulerTotient {\n\n public static int eulerTotient(int n) {\n int result = n; \/\/ \uacb0\uacfc\ub97c n\uc73c\ub85c \ucd08\uae30\ud654\n for (int p = 2; p * p <= n; p++) {\n \/\/ p\uac00 n\uc758 \uc18c\uc778\uc218\uc778\uc9c0 \ud655\uc778\n if (n % p == 0) {\n \/\/ \uc18c\uc778\uc218\uc778 \uacbd\uc6b0 \uacb0\uacfc\ub97c \uacc4\uc0b0\n while (n % p == 0) {\n n \/= p;\n }\n result -= result \/ p; \/\/ \uacb0\uacfc \uc5c5\ub370\uc774\ud2b8\n }\n }\n \/\/ \ub9c8\uc9c0\ub9c9 \uc18c\uc778\uc218 \ucc98\ub9ac\n if (n > 1) {\n result -= result \/ n;\n }\n return result;\n }\n\n public static void main(String[] args) {\n int n = 10; \/\/ \ud14c\uc2a4\ud2b8\ud560 \uc785\ub825\n System.out.println(\"\u03c6(\" + n + \") = \" + eulerTotient(n)); \/\/ \uacb0\uacfc \ucd9c\ub825\n }\n}\n<\/code><\/pre>\n\uc704 \ucf54\ub4dc\ub294 \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \ud6a8\uc728\uc801\uc73c\ub85c \uacc4\uc0b0\ud558\uae30 \uc704\ud574 \uc18c\uc778\uc218 \ubd84\ud574\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc5f0\uc0b0\uc744 \uc218\ud589\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc785\ub825 \uac12 n<\/code>\uc5d0 \ub300\ud574 \u03c0(n)\uc774 \uacc4\uc0b0\ub418\uace0, \uacb0\uacfc\uac00 \ucd9c\ub825\ub429\ub2c8\ub2e4.<\/p>\n \ucf54\ub4dc \uc124\uba85<\/h2>\n1. \ud568\uc218 \uc815\uc758<\/h3>\npublic static int eulerTotient(int n)<\/code> \uba54\uc11c\ub4dc\ub294 \uc785\ub825\ub41c \uc815\uc218 n<\/code>\uc758 \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \uacc4\uc0b0\ud558\uc5ec \ubc18\ud658\ud569\ub2c8\ub2e4. \ucd5c\uc885 \uacb0\uacfc\ub294 result<\/code>\ub77c\ub294 \ubcc0\uc218\uc5d0 \uc800\uc7a5\ub418\uba70, \ucd08\uae30\uac12\uc73c\ub85c n<\/code>\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n 2. \uc18c\uc778\uc218 \uccb4\ud06c<\/h3>\nfor \ub8e8\ud504\ub97c \uc0ac\uc6a9\ud558\uc5ec p<\/code>\uac00 2<\/code>\ubd80\ud130 \u221an<\/code>\uae4c\uc9c0\uc758 \uac12\uc744 \uac00\uc9c0\uba70, p<\/code>\uac00 n<\/code>\uc758 \uc18c\uc778\uc218\uc778\uc9c0\ub97c \ud655\uc778\ud569\ub2c8\ub2e4. \uc18c\uc778\uc218\uc77c \uacbd\uc6b0, n<\/code>\uc758 \ubaa8\ub4e0 p<\/code>\uc758 \uac70\ub4ed\uc81c\uacf1\uc744 \ub098\ub204\uba70 \ud574\ub2f9 \uc18c\uc218\uc5d0 \ub300\ud55c \ucc98\ub9ac\ub97c \uc9c4\ud589\ud569\ub2c8\ub2e4.<\/p>\n 3. \uacb0\uacfc \uacc4\uc0b0<\/h3>\n\uc18c\uc778\uc218 p<\/code>\ub97c \ucc3e\uc73c\uba74 result<\/code>\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\uc5ec n<\/code>\uacfc\uc758 \uad00\uacc4\ub97c \uace0\ub824\ud558\uc5ec \ucd5c\uc885\uc801\uc73c\ub85c \u03c6(n)<\/code> \uac12\uc744 \uacc4\uc0b0\ud569\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9\uc73c\ub85c n<\/code>\uc774 1\ubcf4\ub2e4 \ud070 \uacbd\uc6b0 \ub9c8\uc9c0\ub9c9 \uc18c\uc778\uc218 \ucc98\ub9ac\ub3c4 \uc78a\uc9c0 \uc54a\uc544\uc57c \ud569\ub2c8\ub2e4.<\/p>\n 4. \uba54\uc778 \uba54\uc11c\ub4dc<\/h3>\nmain<\/code> \uba54\uc11c\ub4dc\uc5d0\uc11c\ub294 \ud14c\uc2a4\ud2b8\ud560 n<\/code> \uac12\uc744 \uc815\uc758\ud558\uace0, \uacb0\uacfc\ub97c \ucd9c\ub825\ud558\ub3c4\ub85d \uc791\uc131\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uacb0\uacfc \ud655\uc778<\/h2>\n\uc704 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud558\uba74, \uc785\ub825\uac12 10<\/code>\uc5d0 \ub300\ud55c \uc624\uc77c\ub7ec \ud53c \ud568\uc218\uc758 \uac12\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uacb0\uacfc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n \u03c6(10) = 4\n<\/code><\/pre>\n10\ubcf4\ub2e4 \uc791\uace0 10\uacfc \uc11c\ub85c\uc18c\uc778 \uc218\ub294 1, 3, 7, 9\ub85c \ucd1d 4\uac1c\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uad6c\ud604\ub41c \uc624\uc77c\ub7ec \ud53c \ud568\uc218\uac00 \uc62c\ubc14\ub974\uac8c \uc791\ub3d9\ud558\uc600\uc74c\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \ubcf5\uc2b5 \ubc0f \ub9c8\ubb34\ub9ac<\/h2>\n\uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub97c \uad6c\ud604\ud558\uace0, \uc774\ub97c \ud1b5\ud574 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub294 \uc218\ud559\uc801 \uc0ac\uace0\ub97c \ubc14\ud0d5\uc73c\ub85c \ud55c \uc54c\uace0\ub9ac\uc998\uc774\uba70, \ub2e4\uc591\ud55c \ubb38\uc81c\ub97c \ud574\uacb0\ud560 \ub54c \uadf8 \ud65c\uc6a9\uc131\uc774 \ud06c\uae30 \ub54c\ubb38\uc5d0 \uc54c\uc544\ub450\uba74 \uc88b\uc2b5\ub2c8\ub2e4. \uc790\ubc14\ub97c \uc0ac\uc6a9\ud558\uc5ec \uad6c\ud604\ud55c \uc774 \ucf54\ub4dc\ub294 \ud2b9\uc815 \ubc94\uc704\uc758 \uc218\uc5d0 \ub300\ud55c \uc624\uc77c\ub7ec \ud53c \uac12\uc744 \ud6a8\uc728\uc801\uc73c\ub85c \uacc4\uc0b0\ud560 \uc218 \uc788\uc73c\uba70, \ub2e4\uc591\ud55c \uc0c1\ud669\uc5d0\uc11c\ub3c4 \uc27d\uac8c \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \uc55e\uc73c\ub85c\ub3c4 \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \uc9c0\uc18d\uc801\uc73c\ub85c \ub2e4\ub8e8\uba70, \ubc18\ubcf5\uc801\uc73c\ub85c \uc5f0\uc2b5\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774\ub294 \ucf54\ub529\ud14c\uc2a4\ud2b8\uc5d0\uc11c \uc131\uacfc\ub97c \ub0b4\ub294\ub370 \ud070 \ub3c4\uc6c0\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4. \uc77d\uc5b4\uc8fc\uc154\uc11c \uac10\uc0ac\ud569\ub2c8\ub2e4!<\/p>\n <\/body><\/p>\n","protected":false},"excerpt":{"rendered":" \uc628\ub77c\uc778 \ucf54\ub529\ud14c\uc2a4\ud2b8\uac00 \uc810\uc810 \ub354 \ub9ce\uc774 \uc694\uad6c\ub418\ub294 \ud604\ub300 \uc0ac\ud68c\uc5d0\uc11c, \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ud478\ub294 \ub2a5\ub825\uc740 \uac1c\ubc1c\uc790\uc5d0\uac8c \ud544\uc218\uc801\uc778 \ud6cc\ub96d\ud55c \uc2a4\ud0ac\uc785\ub2c8\ub2e4. \uc624\ub298\uc740 \uc218\ud559\uc801 \uac1c\ub150\uc744 \ud65c\uc6a9\ud55c \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ub2e4\ub8e8\uc5b4 \ubcfc \uac83\uc785\ub2c8\ub2e4. \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \uc624\uc77c\ub7ec \ud53c \ud568\uc218(Euler\u2019s Totient Function)\ub97c \uad6c\ud604\ud558\uace0, \uc774\ub97c \uc790\ubc14 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4. \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub780? \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub294 \uc8fc\uc5b4\uc9c4 \uc591\uc758 \uc815\uc218 n\uc5d0 \ub300\ud574, 1\ubd80\ud130 n\uae4c\uc9c0\uc758 \uc815\uc218 … \ub354 \ubcf4\uae30 “\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uad6c\ud604\ud558\uae30”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-26854","post","type-post","status-publish","format-standard","hentry","category-22"],"yoast_head":"\n\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uad6c\ud604\ud558\uae30 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atmokpo.com\/w\/26854\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uad6c\ud604\ud558\uae30 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"\uc628\ub77c\uc778 \ucf54\ub529\ud14c\uc2a4\ud2b8\uac00 \uc810\uc810 \ub354 \ub9ce\uc774 \uc694\uad6c\ub418\ub294 \ud604\ub300 \uc0ac\ud68c\uc5d0\uc11c, \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ud478\ub294 \ub2a5\ub825\uc740 \uac1c\ubc1c\uc790\uc5d0\uac8c \ud544\uc218\uc801\uc778 \ud6cc\ub96d\ud55c \uc2a4\ud0ac\uc785\ub2c8\ub2e4. \uc624\ub298\uc740 \uc218\ud559\uc801 \uac1c\ub150\uc744 \ud65c\uc6a9\ud55c \uc54c\uace0\ub9ac\uc998 \ubb38\uc81c\ub97c \ub2e4\ub8e8\uc5b4 \ubcfc \uac83\uc785\ub2c8\ub2e4. \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \uc624\uc77c\ub7ec \ud53c \ud568\uc218(Euler\u2019s Totient Function)\ub97c \uad6c\ud604\ud558\uace0, \uc774\ub97c \uc790\ubc14 \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\ub85c \ud574\uacb0\ud558\ub294 \uacfc\uc815\uc744 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4. \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub780? \uc624\uc77c\ub7ec \ud53c \ud568\uc218\ub294 \uc8fc\uc5b4\uc9c4 \uc591\uc758 \uc815\uc218 n\uc5d0 \ub300\ud574, 1\ubd80\ud130 n\uae4c\uc9c0\uc758 \uc815\uc218 … \ub354 \ubcf4\uae30 "\uc790\ubc14 \ucf54\ub529\ud14c\uc2a4\ud2b8 \uac15\uc88c, \uc624\uc77c\ub7ec \ud53c \ud568\uc218 \uad6c\ud604\ud558\uae30"\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atmokpo.com\/w\/26854\/\" \/>\n<meta property=\"og:site_name\" content=\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-27T11:53:12+00:00\" \/>\n<meta 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