Cod sursa(job #1745129)

Utilizator flaviu_2001Craciun Ioan-Flaviu flaviu_2001 Data 21 august 2016 12:42:41
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.6 kb
#include <fstream>
#define REST 1999999973
#define ll (long long)

using namespace std;

int x, y;

void read();
int solve();
void write();

int main(){
    read();
    write();
    return 0;
}

void read(){
    ifstream fin ("lgput.in");
    fin >> x >> y;
    fin.close();
}

int solve(){
    int p = 1;
    while (y)
         if (!(y%2))
            x = ( ll x * ll x ) % REST,
            y /= 2;
        else p = ( ll p * ll x ) % REST,
            --y;
    return p;
}

void write(){
    ofstream fout ("lgput.out");
    fout << solve() << "\n";
    fout.close();
}