Submission

Score: 100

User: Boeing12345

Problemset: ตรวจบัตรเครดิต

Language: cpp

Time: 0.003 second

Submitted On: 2026-09-24 11:23:09

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>

using namespace std;
int main() {
    string a = "";
    string b = "";
    string d = "";
    int check;
    int i;
    int R = 0;
    vector <int> c;
    vector <int> m;
    cin >> a;
    if(a.length() == 16){
        b = a.substr(0, 15);
        check = a[15] - '0';
        reverse(b.begin(), b.end());
        for(i = 0; i <= 14; i++){
            if(i % 2 == 1){
            c.push_back(b[i] - '0');
            } else if(i % 2 == 0){
            c.push_back(2 * (b[i] - '0'));
            }

        }
        for(i = 0; i <= 14; i++){
            d = d + to_string(c[i]);
        }
        for(i = 0; i <= d.length() - 1; i++){
            R = R + (d[i] - '0');
        }
        if(((10-(R % 10)) % 10) == check){
            cout << "yes";
        } else {
            cout << "no";
        }

    }
}