Cod sursa(job #2330800)
Utilizator | Dragos Raducanu draducanu | Data | 28 ianuarie 2019 20:43:51 |
---|---|---|---|
Problema | Factorial | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.53 kb |
//
// Created by dragos on 28.01.2019.
//
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin ("factorial.in");
ofstream fout ("factorial.out");
int p;
int main() {
fin>>p;
if(p == 0) {
fout<<1;
} else {
double k = p;
for(; k > 1; k /= 5.0);
if(k == 1.0) {
fout<< -1;
} else if(p < 5) {
fout<< (p - p / 5) * 5;
} else {
fout<< (p - p / 5 + 1) * 5;
}
}
fin.close();
fout.close();
return 0;
}