Submission

Score: 100

User: speed_coding

Problemset: ISBN

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-08 21:24:13

#include<bits/stdc++.h>
using namespace std;
int main(){
    
    int isbn[9] ;
    for(int i = 0; i < 9; i++){
        cin >> isbn[i] ;
    }
    int total_sum = 0;
    int weight = 10;
    for(int i = 0; i < 9; i++){
        total_sum += isbn[i] * weight ;
        weight--;
    }
	int remainder = total_sum % 11;
	int n10 = 0;
	if(remainder != 0){
		n10 = 11 - remainder;
	}
    
	cout << n10;
}