Cod sursa(job #150062)
Utilizator | Data | 6 martie 2008 15:46:07 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <iostream>
#include <fstream>
using namespace std;
unsigned long N,
P;
int main(int argc, char *argv[]) {
ifstream fin("lgput.in");
fin >> N >> P;
fin.close();
unsigned long i = 1 << 31;
unsigned long sol = 1;
while (i > 0) {
sol = (sol * sol) % 1999999973;
if (i & P)
sol = (sol * N) % 1999999973;
//cout << i << " " << (i & P) << " - " << sol << endl;
i >>= 1;
}
ofstream fout("lgput.out");
fout << sol << endl;
fout.close();
return 0;
}