Cod sursa(job #1012094)
| Utilizator | Data | 18 octombrie 2013 01:28:43 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.51 kb |
#include <iostream>
#include <fstream>
using namespace std;
long ridicaLaPutere(int n,int p){
if(n<0){
ridicaLaPutere(1/n,-p);
}else if(p==0){
return 1;
}else if(p==1){
return n;
}else if(n%2!=0){
return n*ridicaLaPutere(n*n,(p-1)/2);
}else if(n%2==0){
return ridicaLaPutere(n*n,p/2);
}
}
int main()
{
fstream f("lgput.in");
int n=0,p=0;
f>>n>>p;
cout<<(ridicaLaPutere(n,p)%1999999973)<<endl;
return 0;
}
