Cod sursa(job #1320006)
Utilizator | Data | 17 ianuarie 2015 15:15:39 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 90 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.36 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned long long int a,b,c=1,i,d,z=1999999973;
int main()
{
fin>>a>>b;d=a*a;
if(1&b)
c=a;
for(i=1;1<<i<=b;i++)
{
if((1<<i)&b)
c=(c*d)%z;
d*=d;
d=d%z;
}
fout<<c;
}