Cod sursa(job #899390)
Utilizator | Data | 28 februarie 2013 14:15:15 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include <fstream>
#define mod 1999999973
using namespace std;
long long a,sol;
int n,p;
ifstream in("lgput.in");
ofstream out("lgput.out");
int main()
{
in>>n>>p;
sol=1LL;
a=n;
for(int i=0;(1<<i)<=p;i++) // iau toti bitii lui p la rand
{
if( ((1<<i)&p) >0) //daca bitul e 1
sol=(sol*a)%mod;
a=(a*a)%mod;
}
out<<sol;
return 0;
}