Submission

Score: 0

User: 8ii8jj

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-01 22:03:00

#include <iostream>
using namespace std;
int main() {
    string a1;
    int a[16],back,b,c=0;
    cin>>a1;
    for(int i=0;i<16;i++) {
        a[i]=a1[i]-48 ;
        back = a[i];
    }
    for(int i=0;i<15;i+=2){
        a[i]=a[i]*2;
    }
    for(int i=0;i<15;i++){
        c+=a[i]/10+a[i]%10;
    }
    b =(10-(c%10))&10;
    if(b==back) 
        cout<<"yes";
    else 
        cout<<"no";
}