Cod sursa(job #1822862)
Utilizator | Data | 5 decembrie 2016 18:20:28 | |
---|---|---|---|
Problema | Factorial | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.57 kb |
#include <bits/stdc++.h>
using namespace std;
int calculare(int nr)
{
int countq=0;
int putere=5;
while(nr/putere>0)
{
countq=countq+nr/putere;
putere*=5;
}
return countq;
}
int main
{
ifstream fin("fact.in");
ofstream fout("fact.out");
int st,dr,mij;
int p;
fin>>p;
while(st<=dr)
{
mij=(st+dr)/2;
if(calculare(mij)<p) st=mij+1;
else
st=mij-1;
}
if(calculare(st)==p) fout<<stanga
else
fout<<-1;
cout<<'\n';
return 0;
}