結果
問題 | No.774 tatyamと素数大富豪 |
ユーザー |
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提出日時 | 2018-12-22 00:11:58 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 1,985 bytes |
コンパイル時間 | 864 ms |
コンパイル使用メモリ | 65,332 KB |
実行使用メモリ | 17,280 KB |
最終ジャッジ日時 | 2024-10-01 13:21:31 |
合計ジャッジ時間 | 9,259 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 13 TLE * 1 |
ソースコード
#include <stdio.h>#include <algorithm>#include <vector>#include <set>using namespace std;using lint = long long;lint gcd(lint a, lint b){return b ? gcd(b,a%b) : a;}namespace miller_rabin{lint mul(lint x, lint y, lint mod){ return (__int128) x * y % mod; }lint ipow(lint x, lint y, lint p){lint ret = 1, piv = x % p;while(y){if(y&1) ret = mul(ret, piv, p);piv = mul(piv, piv, p);y >>= 1;}return ret;}bool miller_rabin(lint x, lint a){if(x % a == 0) return 0;lint d = x - 1;while(1){lint tmp = ipow(a, d, x);if(d&1) return (tmp != 1 && tmp != x-1);else if(tmp == x-1) return 0;d >>= 1;}}bool isprime(lint x){for(auto &i : {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37}){if(x == i) return 1;if(x > 40 && miller_rabin(x, i)) return 0;}if(x <= 40) return 0;return 1;}}namespace pollard_rho{lint f(lint x, lint n, lint c){return (c + miller_rabin::mul(x, x, n)) % n;}void rec(lint n, vector<lint> &v){if(n == 1) return;if(n % 2 == 0){v.push_back(2);rec(n/2, v);return;}if(miller_rabin::isprime(n)){v.push_back(n);return;}lint a, b, c;while(1){a = rand() % (n-2) + 2;b = a;c = rand() % 20 + 1;do{a = f(a, n, c);b = f(f(b, n, c), n, c);}while(gcd(abs(a-b), n) == 1);if(a != b) break;}lint x = gcd(abs(a-b), n);rec(x, v);rec(n/x, v);}vector<lint> factorize(lint n){vector<lint> ret;rec(n, ret);sort(ret.begin(), ret.end());return ret;}};int main(){int N; scanf ("%d",&N);int A[10]; for (int i=0;i<N;i++) scanf ("%d",&A[i]);long long ans = -1;set<long long> chk;do{long long a = 0;for (int i=0;i<N;i++){if (A[i] < 10) a = a * 10 + A[i];else a = a * 100 + A[i];}if (chk.count(a)) continue;else{chk.insert(a);if (miller_rabin::isprime(a)) ans = max(ans,a);}}while(next_permutation(A,A+N));printf ("%lld\n",ans);return 0;}