Cod sursa(job #3296173)
| Utilizator | Data | 12 mai 2025 00:15:24 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 0.58 kb |
//https://infoarena.ro/problema/lgput
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned exponentiate(unsigned n, unsigned p){ //computes and returns n to the power of p (modulo 1999999973)
if (p == 0)
return 1;
if (p % 2) // p is odd
return n * exponentiate(n * n, (p - 1) / 2);
else // p is even
return exponentiate(n * n, p / 2);
}
int main(){
unsigned n, p;
fin>>n>>p;
fout<<exponentiate(n, p);
fin.close();
fout.close();
}