Cod sursa(job #2068850)
Utilizator | Data | 18 noiembrie 2017 11:26:50 | |
---|---|---|---|
Problema | GFact | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.52 kb |
#include <iostream>
#include <fstream>
using namespace std;
int caut_nr(int nr,int n)
{
int nrz=0;
while(n>=nr)
nrz+=(n/=nr);
return nrz;
}
int main()
{
long long nr,pas,r,q;
ifstream cin("gfact.in");
ofstream cout("gfact.out");
cin>>nr>>q;
pas=(nr*q)/2;
r=0;
while(pas!=0)
{
if(caut_nr(nr,r+pas)<q)
r+=pas;
pas=pas/2;
}
if(caut_nr(nr,r+1) == q)
cout << -1;
else
cout<<r+1;
return 0;
}