Detective Debut

input/code.cpp: In function 'int main()':
input/code.cpp:16:9: warning: unused variable 'hints' [-Wunused-variable]
     int hints = 0;
         ^~~~~

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

int n;
int arr[101010];

int main()
{
    cin >> n;
    int x;
    for (int i = 0; i < n; i++) {
        cin >> x;
        arr[x]++;
    }
    int hints = 0;
    for (int i = 0; i <= n; i++) {
        if (arr[i] == i+2) {
            cout << "NO";
            return 0;
        }
    }
    if (arr[0] == n) {
        cout << "NO";
        return 0;
    }
    cout << "YES";
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: ACCEPTED

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: WRONG ANSWER