結果
問題 | No.811 約数の個数の最大化 |
ユーザー | mikianaaa |
提出日時 | 2020-09-09 20:54:54 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 37 ms / 2,000 ms |
コード長 | 1,572 bytes |
コンパイル時間 | 2,055 ms |
コンパイル使用メモリ | 169,372 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-05-09 16:26:12 |
合計ジャッジ時間 | 2,579 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 20 ms
6,944 KB |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 3 ms
6,944 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 10 ms
6,944 KB |
testcase_09 | AC | 12 ms
6,940 KB |
testcase_10 | AC | 7 ms
6,940 KB |
testcase_11 | AC | 17 ms
6,940 KB |
testcase_12 | AC | 6 ms
6,940 KB |
testcase_13 | AC | 37 ms
6,944 KB |
testcase_14 | AC | 21 ms
6,940 KB |
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/istream:39, from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/sstream:38, from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/complex:45, from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ccomplex:39, from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/x86_64-pc-linux-gnu/bits/stdc++.h:54, from main.cpp:2: In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]', inlined from 'int main()' at main.cpp:71:13: /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ostream:202:25: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 202 | { return _M_insert(__n); } | ~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:59:16: note: 'ans' was declared here 59 | ll en = 0, ans; | ^~~
ソースコード
#include <algorithm> #include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define rrep(i, n) for (int i = (int)n - 1; i > -1; i--) #define all(x) (x).begin(), (x).end() #define ll long long #define ld long double #define INF 1000000000000000000 typedef pair<ll, ll> pll; int N, K; pll prime_factorize(long long N) { ll res1 = 0, res2 = 1; for (long long a = 2; a * a <= N; ++a) { if (N % a != 0) continue; long long ex = 0; // 指数 // 割れる限り割り続ける while (N % a == 0) { ++ex; N /= a; } // その結果を push res1 += ex; res2 *= (ex + 1); } // 最後に残った数について if (N != 1) { res1 += 1; res2 *= 2; } return {res1, res2}; } long long GCD(long long a, long long b) { if (b == 0) return a; else return GCD(b, a % b); } int main() { cin.tie(0); ios::sync_with_stdio(false); cin >> N >> K; vector<ll> tmp; for (int i = 1; i < N; i++) { int gcd = GCD(i, N); pll pri = prime_factorize(gcd); if (pri.first >= K) tmp.push_back(i); } ll en = 0, ans; rep(i, tmp.size()) { pll pri = prime_factorize(tmp[i]); if (pri.second > en) { en = pri.second; ans = tmp[i]; } else if (pri.second == en) { if (tmp[i] < ans) ans = tmp[i]; } } cout << ans << endl; return 0; }