Submission

Score: 100

User: GONGGONG

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-11 22:50:51

#include <iostream>
using namespace std;

int main() {
    string s;cin>>s;
    int l=s[15]-48;
    int arr[s.size()-1];
    for(int i=0;s[i]!='\0';i++) arr[i]=s[i]-48;
    for(int i=0;i<7;i++){
        int track=arr[i];
        arr[i]=arr[14-i];
        arr[14-i]=track;
    }
    for(int i=0;i<15;i++) if(i%2==0) arr[i]*=2;
    int sum=0;
    for(int i=0;i<15;i++){
        if(arr[i]>=10){
            sum+=arr[i]/10;
            sum+=arr[i]%10;
        }else sum+=arr[i];
    }
    if((10-(sum%10))%10==l) cout<<"yes";
    else cout<<"no";
}