Cod sursa(job #345082)
| Utilizator | Data | 1 septembrie 2009 17:28:20 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.57 kb |
#include <fstream>
using namespace std;
long long pow(long long n,long long p)
{
long long res = 1;
long long crtpow = n;
long long pow2 = 2;
if(!p) return 1;
if(p%2) res *= n;
while(pow2<=p)
{
crtpow *= crtpow;
crtpow %= 1999999973;
if(pow2 & p) res *= crtpow;
pow2 <<= 1;
res %= 1999999973;
pow2 %= 1999999973;
}
return res;
}
int main()
{
long long n,p;
ifstream f("lgput.in");
ofstream f2("lgput.out");
f>>n>>p;
f2<<pow(n,p);
return 0;
}
