Cod sursa(job #935121)
| Utilizator | Data | 1 aprilie 2013 17:49:48 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.48 kb |
#include <fstream>
#include <math.h>
#define M 1999999973
using namespace std;
int lgpow_mod_m(long long n, long long pw, int m)
{
long long res = 1, p = 1;
while (p <= pw) {
if (p & pw)
res = res * n % m;
n = n * n % m;
p <<= 1;
}
return res;
}
int main()
{
ifstream in("lgput.in");
ofstream out("lgput.out");
long long n, p;
in>>n>>p;
out<<lgpow_mod_m(n, p, M)<<endl;
return 0;
}
