더블릿|dovelet - 2번째 계단 - 해킹 회사/hack

문제 

#include <iostream>
 
using namespace std;
 
int main()
{
    int r, e, c;
    cin >> r >> e >> c;
 
    if (r < e - c)
        cout << "advertise";
    else if (r > e - c)
        cout << "do not advertise";
    else
        cout << "does not matter";
 
    return 0;
}