Submission

Score: 100

User: peilin

Problemset: ISBN

Language: c

Time: 0.002 second

Submitted On: 2025-10-12 11:48:03

#include<stdio.h>

int main() {
	int a[9],i,j=10,sum=0,x=0;
	for(i=0; i<9; i++) {
		scanf("%d", &a[i]);
		sum = a[i]*j+sum;
		j--;
	}
	
	if(sum%11==0){
		x=0;
	} else {
	x = 11-(sum%11);		
	}
	
	printf("%d", x);
	
	return 0;
}