Cod sursa(job #950153)
Utilizator | Rad Emanuel RadEmanuel | Data | 15 mai 2013 22:37:06 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include<fstream>
#define lli long long
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
lli n,p,nr=1999999973;
lli f(lli n, lli p)
{
if(p==0)
return 1;
else if(p==1)
return n%nr;
else if(p%2)
return ((n%nr)*f((n%nr)*(n%nr),(p-1)/2))%nr;
else if(!(p%2))
return (f((n%nr)*(n%nr),p/2))%nr;
}
int main()
{
fin>>n>>p;
n%=nr;
p%=nr;
fout<<f(n,p);
return 0;
}