Cod sursa(job #2669975)

Utilizator Biencutza04Leoveanu Bianca Biencutza04 Data 8 noiembrie 2020 16:16:31
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.48 kb
#include <fstream>
#define M 1999999973
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
int ridput(int a, int b)
{   if(b==0) return 1;
    int r=ridput(a,b/2);
    r=(1LL*r*r)%M;
    if(b&1) r=(1LL*r*a)%M;
    return r;
}
int main()
{   int a,b;
    f>>a>>b;
    /*
    int r=1;
    for(;b;b>>=1)
    {   if(b&1) r=(1LL*r*a)%M;
        a=(1LL*a*a)%M;
    }
    g<<r;
    */
    g<<ridput(a,b);
    g.close();
    f.close();
    return 0;
}