Cod sursa(job #2562020)

Utilizator denmirceaBrasoveanu Mircea denmircea Data 29 februarie 2020 11:41:46
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.42 kb
#include <fstream>
#define mod 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long lgput(long long a,long long b)
{
    if(!b)
        return 1;
    if(b%2)
        return lgput(a*a%mod,b/2)*a%mod;
    return lgput(a*a%mod,b/2)%mod;

}
int main()
{
    /// cea mai buna exponentiere pe care am scris o vreodata
    long long a,b;
    fin>>a>>b;
    fout<<lgput(a,b);
}