Cod sursa(job #1105258)
Utilizator | Data | 11 februarie 2014 17:31:11 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.45 kb |
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
#define mod 1999999973
typedef long long int lli;
lli n,p,x,r=1;
void power(lli p,lli &x,lli &r)
{
if(p==1)
x=n%mod;
else
{power(p/2,x,r);
if(p%2==1)
r=(x*r)%mod;
x=(x*x)%mod;}
}
int main()
{
f>>n>>p;
power(p,x,r);
g<<(x*r)%mod;
f.close();g.close();
return 0;
}