Järjestäminen

/**
 * Datatähti 2021 loppu
 * 358
 * C
 * Järjestäminen
 * @author TRS
 */
//Include
#include <bits/stdc++.h>
//Definitions
using namespace std;
//Constants
#define infinity 0x3f3f3f3f
#define linfinity 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007
int t;
int n;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>t;
    for (int _ = 0; _ < t; _++) {
        cin>>n;
        int a[n];
        int YES = 1;
        for (int i = 0; i < n; i++) {
            cin>>a[i];
            if (i > 0 && a[i] == a[i - 1] - 1) {
                YES = 0;
            }
        }
        if (YES) {
            cout<<"YES"<<"\n";
        }
        else {
            cout<<"NO"<<"\n";
        }
    }
    return 0;
}

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 1, 2

Verdict: WRONG ANSWER