Elevator Trouble

#include <iostream>

using namespace std;

int main() {
	cin.sync_with_stdio(0);
	int f, s, g, u, d;
	cin >> f >> s >> g >> u >> d;
	for (int i = 0;i<1000000;i++) {
		if (s == g) {
			cout << i << "\n";
			return 0;
		}
		if ((s<g && s+u <=f) || s-d <= 0) {
			s +=u;
		} else {
			s -= d;
		}
		if (s >f) break;
	}
	cout << "use the stairs\n";
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED