func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int k, n, s, p, b, c;     cin >> k >> n >> s >> p;     float a = (n * 1.0) / s;     b = ceil(a);     c = b * k;     float d = (c * 1.0) / p;     int t = ceil(d);     cout << t;   }   