Cod sursa(job #1666536)
| Utilizator | Data | 28 martie 2016 08:36:34 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.69 kb |
#include <fstream>
using namespace std;
unsigned long long int x;
unsigned long long int exp(unsigned long long int x,int p)
{
if(p==0)
{
return 1;
}
if(p==1)
{
return x;
}
if(p%2==0)
{
return (exp(x*x,p/2));
}
else
{
return (x*exp(x*x,(p-1)/2));
}
}
int main()
{
ifstream in("lgput.in");
ofstream out("lgput.out");
int n,p;
in>>n>>p;
if(p==1)
x=n;
else if(p==0)
x=1;
else if(p%2==0)
x=exp(n*n,p/2);
else
x=n*exp(n*n,(p-1)/2);
out<<x%1999999973;
return 0;
}
