Submission

Score: 100

User: mameeewin

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-13 15:39:47

#include <iostream>
#include <vector>
using namespace std;

int main(){
  string s; cin >> s;
  vector<int> a; for (char i: s) a.push_back(i-'0');
  int done=0;
  for (int i=14; i>-1; i--){
    if (i%2==0) done+=a[i]*2%10+a[i]*2/10;
    else done+=a[i];
  }
  cout << ((10-done%10)%10==a[15]?"yes":"no");
}