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Cod sursa(job #278187)
#include<iostream.h>
#include<math.h>
#include<fstream.h>
long long i,p,n,s,putere;
float r;
ifstream f("fact.in");
ofstream g("fact.out");
main()
{
f>>p;
// putere=pow(10,p);
if(p==0) g<<'1';
else{
while(s<p)
{
for(i=0;s<=p;i++)
s=(s*5)+1;
s=(s-1)/5;
n=n+pow(5,i-1);
p-=s;
s=0;
}
//r=n%putere;
//if(r!=0) g<<'-1';
//else
g<<n;}
g.close();
}