Cod sursa(job #1046387)
| Utilizator | Data | 2 decembrie 2013 21:26:30 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.52 kb |
#include<fstream>
#define MOD 1999999973
using namespace std;
long long ridicaLaPutere(long long n, long long b){
if (b < 0){
return ridicaLaPutere(1 / n, -b)%MOD;
}
else if (b == 0){
return 1;
}
else if (b == 1){
return n;
}
else if (b % 2 == 0){
return ridicaLaPutere((n*n), b/2)%MOD;
}
else {
return ridicaLaPutere((n*n), (b - 1) / 2)%MOD;
}
}
int main(){
ifstream f("lgput.in");
long long n, p;
f >> n >> p;
ofstream cout("lgput.out");
cout << ridicaLaPutere(n, p)%MOD;
}