Cod sursa(job #1609959)
| Utilizator | Data | 23 februarie 2016 10:27:34 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.56 kb |
#include <iostream>
#include <fstream>
#define MOD 1999999973
using namespace std;
long long lgexp(long long n, long p) {
if(p==0) {
return 1;
}
else if(p==1) {
return n % MOD;
}
if(p%2 == 0) {
return lgexp((n*n)% MOD, p/2) % MOD;
}
else {
return (n * lgexp((n*n)% MOD, (p-1)/2)) % MOD;
}
}
int main()
{
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long n, p;
fin>>n>>p;
fin.close();
fout<<lgexp(n, p);
fout.close();
return 0;
}
