Cod sursa(job #2669285)

Utilizator bogdan2604Bogdan Dumitrescu bogdan2604 Data 6 noiembrie 2020 17:48:53
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.43 kb
#include <fstream>
#define mod 1999999973
typedef long long ll;

using namespace std;

ifstream f("lgput.in");
ofstream g("lgput.out");

ll pow(ll a, ll b)
{
    if(b == 1)
        return a % mod;
    if(b & 1)
        return (a % mod * pow(a, b - 1) % mod) % mod;
    else
    {
        ll x = pow(a, b / 2) % mod;
        return x * x % mod;
    }
}

int main()
{
    ll a,b;
    f >> a >> b;
    g << pow(a,b);
}