Cod sursa(job #2443511)
Utilizator | Surani Adrian Therevengerking | Data | 28 iulie 2019 13:41:21 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
const int mdl = 1999999973;
int b, ex;
int lgput(int b, int ex)
{
if(ex == 0) return 1;
if(ex == 1) return b;
if(ex % 2)
return b * lgput(b * b * 1LL, (ex - 1) / 2) * 1LL % mdl;
return lgput(b * b * 1LL % mdl, ex / 2);
}
int main()
{
fin >> b >> ex;
fout << lgput(b, ex);
return 0;
}