Cod sursa(job #1957881)
| Utilizator | Data | 7 aprilie 2017 20:31:16 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.48 kb |
#include <fstream>
#define prim 1999999973
using namespace std;
ifstream fi ("lgput.in");
ofstream fo ("lgput.out");
long long putere (long long baza,long long expo)
{
long long rez=1;
baza=baza%prim;
if (expo==1) return baza;
if (expo%2==1)
{
rez=rez*baza;
expo--;
rez=rez*putere(baza*baza,expo/2);
}
else
rez=putere(baza*baza,expo/2);
return rez;
}
long long a,b;
int main()
{
fi>>a>>b;
fo<<putere(a,b);
return 0;
}
