Cod sursa(job #2134602)

Utilizator adiaioanaAdia R. adiaioana Data 18 februarie 2018 09:46:23
Problema Ridicare la putere in timp logaritmic Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 0.38 kb
#include <fstream>
#define M 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int p,a,b;
int rec(int n,int o);
int main()
{
    fin>>a>>b;
    p=rec(a,b);
    fout<<p<<'\n';
    return 0;
}
int rec(int n,int o)
{
    if(o==0)
        return 1;
    int x=rec(n,o/2)%M;
    if(o%2)
        return (((x*x)%M)*n)%M;
    return (x*x)%M;
}