Cod sursa(job #2151386)

Utilizator andreigasparoviciAndrei Gasparovici andreigasparovici Data 4 martie 2018 13:47:58
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.44 kb
#include <cstdio>
using namespace std;
 
typedef long long LL;
 
const int MOD = 1999999973;
 
LL logPow(LL x, LL p) {
    LL ans;
    for (ans = 1; p;  p >>= 1) {
        if (p & 1) ans = (ans * x) % MOD;
        x = (x * x) % MOD;  
    }
    return ans;
}
 
int main()
{
    freopen("lgput.in", "r", stdin);
    freopen("lgput.out", "w", stdout);
    LL a, b;
    scanf("%lld %lld ", &a, &b);
    printf("%lld\n", logPow(a % MOD, b));
    return 0;
}