Cod sursa(job #2191999)

Utilizator PredaBossPreda Andrei PredaBoss 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;
}