Cod sursa(job #1910374)

Utilizator Horia14Horia Banciu Horia14 Data 7 martie 2017 16:38:02
Problema Ridicare la putere in timp logaritmic Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.59 kb
#include<cstdio>
const int MOD = 1999999973;

long long unsigned putere(long long unsigned n, long long unsigned p)
{
    long long unsigned sol;
    sol = 1;
    while(p)
    {
        if(p & 1)
        {
            sol = (sol*n) % MOD;
            p--;
        }
        n = (n*n) % MOD;
        p >>= 1;
    }
    return sol;
}

int main()
{
    long long unsigned n, p;
    FILE *fin, *fout;
    fin = fopen("lgput.in","r");
    fout = fopen("lgput.out","w");
    fscanf(fin,"%I64d%I64d",&n,&p);
    fprintf(fout,"%I64d\n",putere(n,p));
    fclose(fout);
    return 0;
}