제출 #1211319

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1211319		PlayVoltz	성질 급한 지학이 (IZhO13_crazy)	C++20	100 / 100	22 ms	328 KiB

crazy

#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
#include <chrono>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin>>t;
	while (t--){
		int n, ans, c=0;
		cin>>n;
		vector<int> vect(n+1);
		for (int i=1; i<=n; ++i)cin>>vect[i];
		for (int i=1; i<=n; ++i){
			bool can=1;
			vector<bool> visited(n+1, 0);
			visited[vect[1]]=1;
			for (int j=1, p=1; j<=n; ++j){
				if (i==j)continue;
				++p;
				if (!visited[j]&&vect[p]!=j)can=0;
				visited[vect[p]]=1;
			}
			if (can)++c, ans=i;
		}
		if (c>1)cout<<"0\n";
		else cout<<ans<<"\n";
	}
}

• Subtask 1: 100 / 100