Cod sursa(job #827936)
Utilizator | Miller Emma Emma97 | Data | 2 decembrie 2012 20:21:07 |
---|---|---|---|
Problema | Factorial | Scor | 10 |
Compilator | c | Status | done |
Runda | Arhiva de probleme | Marime | 0.52 kb |
#include <stdio.h>
#include <stdlib.h>
FILE *in,*out; int n,P,X,nr;
int main()
{ int i;
in=fopen("fact.in","r");
out=fopen("fact.out","w");
fscanf(in,"%d",&P);
for(i=5;nr<P;i=i+5)
{
X=i;
while(X%25==0)
nr=nr+2;
while(X%5==0)
{X=X/5;
nr++;
}
}
if(P>0)
{if(nr==P)
fprintf(out,"%d",i-5);
else
if( nr>P)
fprintf(out,"%d",-1);
}
else
fprintf(out,"%d",1);
fclose(in);fclose(out);
return 0;
}