(c++) 백준 "2869) 달팽이는 올라가고 싶다"

https://www.acmicpc.net/problem/2869

2869번: 달팽이는 올라가고 싶다

---

#include <iostream>
#include <cmath>
using namespace std;
int main() {
	int A, B, V; cin >> A >> B >> V;
	int top = V - A; int mod = A - B;
	int answer = top / mod;
	if (top % mod > 0) answer++;
	cout << answer+1 << endl;
	return 0;
}