Submission

Score: 95

User: TonnamSora

Problemset: ISBN

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-07 23:20:06

#include <iostream>
using namespace std;

int main(){
    int sum = 0;
    int a[9];
    int check = 0;
    for(int i = 10; i > 1; i--){
        cin >> a[10 - i];
        sum += i * a[10 - i];
        check += a[10 - i];
    }
    int ans;
    ans = 11 - (sum % 11);
    if(check == 0){
        ans = 0;
    }
    cout << ans;
}