Cod sursa(job #1291977)
Utilizator | Data | 13 decembrie 2014 15:40:44 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.36 kb |
#include <fstream>
using namespace std;
ifstream in ("lgput.in");
ofstream out ("lgput.out");
int main()
{
int a , b , i ;
long long r = 1 , m = 1999999973 ;
in >> a >> b ;
for( i = 0 ; i <= b ; i++ )
{
if( (b>>i) & 1)
r = ( r * a ) % m;
a = ( a* a) % m;
}
out << r;
return 0;
}