Cod sursa(job #981666)
Utilizator | Data | 7 august 2013 18:15:29 | |
---|---|---|---|
Problema | Factorial | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.39 kb |
#include<fstream>
int cinciuri(int a)
{int u=0;
while(!(a%5)){a/=5;u++;}
if(a==1)return u;
return 0;}
int main()
{
int c=0,z=1;
unsigned long long p,i;
std::ifstream f("fact.in");
f>>p;f.close();
i=5*p;
for(unsigned long long j=25;j<=i;j+=25)
if(cinciuri(j)>z)z++;c+=z-1;
i-=5*c;
std::ofstream g("fact.out");
if(!p)g<<1;
else g<<i;g.close();
}