Cod sursa(job #2175700)
| Utilizator | Data | 16 martie 2018 18:33:53 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.51 kb |
#include <fstream>
std::ifstream f("lgput.in");
std::ofstream g("lgput.out");
using uint64 = unsigned long long;
uint64 x, y;
uint64 Pow(uint64 x, uint64 y)
{
if (x == 1)
return 1;
else if (x == 0)
return 0;
else if (y == 1)
return x;
else if (y % 2 == 1) {
uint64 aux = Pow(x, (y - 1) / 2);
return aux * aux * x;
}
else {
uint64 aux = Pow(x, y / 2);
return aux * aux;
}
}
int main(int argc, char * argv[])
{
f >> x >> y;
g << Pow(x, y) % 1999999973;
return 0;
}