Cod sursa(job #1944214)
Utilizator | Data | 28 martie 2017 23:56:04 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.5 kb |
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long result;
int N,P;
int main()
{
fin>>N>>P;
if(N==0)fout<<0;
else if(N==1 || P==0)fout<<1;
else if(P==1)fout<<N;
else {
result=1;
for(int i=0; (i<<1)<=P ; ++ i){
if( ((1<<i) & P) > 0)
result = (result * N) % 1999999973;
N=(N*N)%1999999973;
}
fout<<result;
}
}