Cod sursa(job #2885790)
Utilizator | Codau Alexandru CodauAlexandru | Data | 6 aprilie 2022 16:39:26 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.56 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
const int MOD = 1999999973;
int n, p;
int putere(int a, int b) {
if (b == 1) {
return a % MOD;
} else if (b == 0) {
return 1;
}
if (b % 2 == 0) {
return (1LL * putere(a, b / 2) % MOD) * (1LL * putere(a, b / 2) % MOD);
} else {
return (1LL * putere(a, b - 1) % MOD) * (1LL * putere(a, 1) % MOD);
}
}
int main() {
fin >> n >> p;
fout << putere(n, p);
return 0;
}