Submission #1010776

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010776		ivopav	Crazy old lady (IZhO13_crazy)	C++17	100 / 100	10 ms	600 KiB

crazy

#include <bits/stdc++.h>
using namespace std;

void prim(){
    int n;
    cin >> n;
    vector<int> lis={0};
    for (int i=0;i<n;i++){
        int unos;
        cin >> unos;
        lis.push_back(unos);
    }
    vector<int> rje={};
    for (int i=1;i<=n;i++){
        bool dob=1;
        vector<bool> bio(n,0);
        bio[lis[1]]=1;
        for (int j=1;j<i;j++){
            if (bio[j]==0 && lis[j+1]!=j){
                dob=0;
                break;
            }
            bio[lis[j+1]]=1;
        }
        for (int j=i+1;j<=n;j++){
            if (bio[j]==0 && lis[j]!=j){
                dob=0;
                break;
            }
            bio[lis[j]]=1;
        }
        if (dob){
            rje.push_back(i);
        }

    }
    if (rje.size()==1){
        cout << rje[0] << "\n";
    }
    else {
        cout << "0\n";
    }
}

int main(){
    long long int t;
    cin >> t;
    for (long long int i=0;i<t;i++){
        prim();
    }
}

• Subtask 1: 100 / 100