結果
問題 | No.2519 Coins in Array |
ユーザー |
|
提出日時 | 2023-10-27 23:21:28 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 324 ms / 2,000 ms |
コード長 | 2,069 bytes |
コンパイル時間 | 2,087 ms |
コンパイル使用メモリ | 197,664 KB |
最終ジャッジ日時 | 2025-02-17 16:00:54 |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 37 |
ソースコード
#include <bits/stdc++.h>using namespace std;int main(){ios_base::sync_with_stdio(false);cin.tie(nullptr);int N; cin >> N;vector<long long> A(N);for(auto &a : A) cin >> a;if(N == 2){long long answer = (A.at(0)-1)*(A.at(1)-1);if(A.at(0) <= 1 || A.at(1) <= 1) answer = 0;if(gcd(A.at(0),A.at(1)) > 1) answer = 0;cout << answer << endl;cout << "1 2" << endl;}else if(N == 3){long long a0 = A.at(0),a1 = A.at(1),a2 = A.at(2);if(a0 <= 1 || a1 <= 1 || a2 <= 1){cout << 0 << endl << "1 2" << endl << "1 2" << endl;}else if(a0%2 == 0 || a1%2 == 0 || a2%2 == 0){cout << 0 << endl;if(a0%2 == 0) cout << "2 3" << endl;else if(a1%2 == 0) cout << "1 3" << endl;else cout << "1 2" << endl;cout << "1 2" << endl;}else{long long answer = 8e18,left = -1;for(int i=0; i<3; i++){long long now = 1;if(gcd(A.at(i),A.at((i+1)%3)) > 1){answer = 0,left = (i+2)%3;break;}now = (A.at(i)-1)*(A.at((i+1)%3)-1);if(gcd(now,A.at((i+2)%3)) > 1){answer = 0,left = (i+2)%3;break;}now = (now-1)*(A.at((i+2)%3)-1);if(now < answer) answer = now,left = (i+2)%3;}bool output = false;cout << answer << endl;for(int i=0; i<3; i++){if(left == i) continue;if(output) cout << " ";output = true;cout << i+1;}cout << endl << "1 2" << endl;}}else{cout << 0 << endl;cout << "1 2" << endl << "1 2" << endl;cout << N-3 << " " << N-2 << endl;N -= 3;while(N != 1){cout << 1 << " " << N << endl;N--;}}}