Submission

Score: 100

User: Darleneee93

Problemset: ISBN

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-13 00:15:50

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

int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int arr[9] = {10,9,8,7,6,5,4,3,2};

	ll sum=0;

	for(int i=0;i<9;i++){
        int x;
        cin >>x;
        sum += arr[i]*x;
	}
	ll ans = (11 - sum % 11) % 11;
    cout << ans;
}