Cod sursa(job #2191999)
Utilizator | Data | 4 aprilie 2018 13:01:21 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.4 kb |
#include <bits/stdc++.h>
#define rest 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long n,p;
int inv(long long k)
{
long long a=k,i=0,nr=1;
while((1<<i)<=p)
{
if(((1<<i)&p)>0)
nr=(nr*a)%rest;
a=(a*a)%rest;
i++;
}
return nr;
}
int main()
{
fin>>n>>p;
fout<<inv(n);
return 0;
}