Cod sursa(job #3170200)
Utilizator | Andrei Nastasa andrei_btw | Data | 16 noiembrie 2023 22:43:36 |
---|---|---|---|
Problema | Factorial | Scor | 50 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.59 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("fact.in");
ofstream fout("fact.out");
int solve(int p) {
int n = 1;
int c0 = 0;
if (p == 0) return 1;
while (c0 != p ) {
int f = n;
while (f % 5 == 0) {
c0++;
f /= 5;
}
n++;
}
if (c0 == p) {
return n - 1;
}
else {
return -1;
}
}
int main() {
int p;
fin >> p;
int sol = solve(p);
fout << sol << '\n';
fin.close();
fout.close();
return 0;
}