Submission

Score: 5

User: GONGGONG

Problemset: ISBN

Language: cpp

Time: 0.005 second

Submitted On: 2026-10-11 20:14:01

#include <iostream>
using namespace std;

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