B_24313

https://www.acmicpc.net/problem/24313

24313번: 알고리즘 수업 - 점근적 표기 1

#include <iostream>

#define fn(a1, a0, n) a1 *n + a0
#define gn(n) n
using namespace std;

int main()
{
    int a1, a0, n, c;
    cin >> a1 >> a0;
    cin >> n;
    cin >> c;

    if (fn(a1, a0, n) <= c * gn(n) && a1 <= c)
        cout << 1;
    else
        cout << 0;
    return 0;
}