Submission

Score: 100

User: Whatthepoop

Problemset: บาร์โค้ด

Language: c

Time: 0.002 second

Submitted On: 2025-10-11 20:54:51

#include <stdio.h>
#include <string.h>

int main(){
    char s[14];
    scanf("%s", s);
    int n = strlen(s);

    int pos = 11;
    int even = 0, sum = 0;
    for(int i = 0; i < n - 1; i++){
        if(pos%2 == 0){
            even += s[i] - '0';
        }
        else{
            sum += s[i] - '0';
        }
        pos--;
    }

    sum += even*3;
    sum += s[n-1] - '0';

    if(sum%10 == 0) printf("YES");
    else printf("NO");

    return 0;
}