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Cod sursa(job #268632)
#include<stdio.h>
int main()
{
unsigned long long put5[]={25,125,625,3125,15625,78125,390625,1953125,9765625,48828125,244140625,1220703125};
unsigned long long nr;
int i;
FILE *fi,*fo;
fi=fopen("factorial.in","r");
fo=fopen("factorial.out","w");
fscanf(fi,"%llu",&nr);
//nr*=5;
//for(i=0;i<11;i++)
// if(put5[i]<=nr)
// nr-=(i+1)*5;
fprintf(fo,"%llu",nr);
return 0;
}