Submission #762906

#	Time	Username	Problem	Language	Result	Execution time	Memory
762906		Trunkty	Cat (info1cup19_cat)	C++14	15 / 100	172 ms	17100 KiB

cat

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll

int t;
int arr[200005];

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> t;
    for(int e=1;e<=t;e++){
        int n;
        cin >> n;
        for(int i=1;i<=n;i++){
            cin >> arr[i];
        }
        bool bad = false;
        for(int i=1;i<=n/2;i++){
            if(arr[i]+arr[n-i+1LL]!=n+1LL){
                bad = true;
            }
        }
        if(bad){
            cout << -1 << "\n";
            continue;
        }
        int cnt=0;
        for(int i=1;i<=n/2;i++){
            if(arr[i]>n/2){
                cnt++;
            }
        }
        if(cnt%2){
            cout << -1 << "\n";
        }
        else{
            cout << 0 << " " << 0 << "\n";
        }
    }
    return 0;
}

• Subtask 1: 2.25 / 15
• Subtask 2: 1.5 / 10
• Subtask 3: 3.75 / 25
• Subtask 4: 2.25 / 15
• Subtask 5: 5.25 / 35