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Cod sursa(job #384710)
#include<fstream.h>
int main(){
long p, i, s=0;
ifstream f("fact.in");
f>>p;
for(i=5; 1; i+=5){
s++;
if(i%25==0)
s++;
if(i%125==0)
s++;
if(i%625==0)
s++;
if(i%3125==0)
s++;
if(i%15625==0)
s++;
if(i%78125==0)
s++;
if(i%25==0)
s++;
if(i%390625==0)
s++;
if(i%1953125==0)
s++;
if(i%9765625==0)
s++;
if(i%25==0)
s++;
if(i%48828125==0)
s++;
if(s>=p)
break;
}
ofstream g("fact.out");
g<<s;
g.close();
return 0;
}