Cod sursa(job #1524940)
Utilizator | Data | 14 noiembrie 2015 16:20:10 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include <fstream>
using namespace std;
int p = 1999999973;
int power(long long a, int b)
{
if(b == 1)
return a;
if(b%2==1)
return (a*power(a,b-1))%p;
else{
int ab2 = (power(a, b/2))%p;
return (ab2*ab2)%p;
}
}
int main()
{
ofstream out("lgput.out");
ifstream in("lgput.in");
int a, b;
in >> a >> b;
out << power(a,b);
return 0;
}