P1421 小玉买文具

题目传送门

#include <bits/stdc++.h>

using namespace std;

int main() {
    int a, b;
    cin >> a >> b;
    int c = 19;
    int d = a * 10 + b;
    int e = d / c;
    cout << e << endl;
    return 0;
}