結果
| 問題 |
No.2719 Equal Inner Products in Permutation
|
| コンテスト | |
| ユーザー |
👑 |
| 提出日時 | 2024-04-06 05:23:09 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 68 ms / 2,000 ms |
| コード長 | 2,283 bytes |
| コンパイル時間 | 4,459 ms |
| コンパイル使用メモリ | 256,552 KB |
| 最終ジャッジ日時 | 2025-02-20 22:25:35 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 30 |
ソースコード
#include<bits/stdc++.h>
#include<atcoder/all>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<vector<int>> vvi;
typedef vector<vector<long long>> vvl;
typedef long double ld;
typedef pair<int, int> P;
ostream& operator<<(ostream& os, const modint& a) {os << a.val(); return os;}
template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;}
template <int m> ostream& operator<<(ostream& os, const dynamic_modint<m>& a) {os << a.val(); return os;}
template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;}
template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;}
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); return os;}
template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : ""); return os;}
template<typename T> void chmin(T& a, T b){a = min(a, b);}
template<typename T> void chmax(T& a, T b){a = max(a, b);}
int main(){
vector<vector<int>> ans2 = {{1, 4}, {3, 6}, {5, 2}};
vector<vector<int>> ans3 = {{1, 2, 9}, {6, 8, 7}, {3, 4, 5}};
vector<vector<int>> ans4 = {{1, 2, 5, 12}, {8, 10, 11, 9}, {3, 6, 4, 7}};
int n;
cin >> n;
if(n == 1){
cout << "-1\n";
return 0;
}
int shift = 0;
vector<vector<int>> ans;
if(n % 3 == 2){
ans = ans2;
n -= 2;
shift = 6;
}else if(n % 3 == 0){
ans = ans3;
n -= 3;
shift = 9;
}else if(n % 3 == 1){
ans = ans4;
n -= 4;
shift = 12;
}
while(n >= 3){
rep(i, 3){
rep(j, 3) ans[i].push_back(ans3[i][j] + shift);
}
shift += 9;
n -= 3;
}
auto judge = [&]{
long long prod = 0;
int n = ans[0].size();
rep(i, n) prod += ans[0][i] * ans[1][i];
rep(i, n) prod -= ans[1][i] * ans[2][i];
if(prod == 0) return true;
else return false;
};
// if(judge()) cout << "OK\n";
// else cout << "NG\n";
vector<int> res;
rep(i, 3){
for(int x : ans[i]) res.push_back(x);
}
cout << res;
return 0;
}