Cod sursa(job #2079315)
| Utilizator | Data | 30 noiembrie 2017 23:10:19 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.5 kb |
#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int main()
{
const int modulo = 1999999973;
unsigned int i, N, P, v[1005];
long long r = 1;
fin >> N >> P;
int k = 1;
while( P > 0 ){
v[k++] = P % 2;
P /= 2;
}
for( i = k - 1 ; i >= 1 ; --i ){
r = (r * r) % modulo;
if( v[i] > 0 ) r = (r * N) % modulo;
}
fout << r;
return 0;
}
