Cod sursa(job #2987039)
Utilizator | Data | 1 martie 2023 21:10:28 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.4 kb |
#include <iostream>
using namespace std;
int lgpt(int a, int b)
{
if(b == 1){
return a;
}
if(b%2==1)
{
return a*lgpt(a, b-1);
}
return lgpt(a, b/2)*lgpt(a,b/2); // 2^7 == 2^6 * 2 == 2^3 * 2^3 * 2 == 2^2 * 2^2 * 2 * 2 * 2 = 2 * 2 * 2 * 2 * 2 * 2 * 2 == 2^7
}
int main()
{
int a,b;
cin>>a>>b;
cout<<lgpt(a,b)%1999999973;
return 0;
}