Cod sursa(job #2074666)
| Utilizator | Data | 24 noiembrie 2017 21:12:09 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.48 kb |
#include <iostream>
#include <fstream>
#define mod 1999999973
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long lgput(long long a, long long b)
{
if (b == 1)
{
return a % mod;
}
if (b % 2 == 1)
{
return (a % mod)*lgput(a % mod, (b - 1) % mod);
}
return lgput((a * a) % mod, (b / 2) % mod);
}
int main()
{
long long a, b;
f>>a>>b;
g<<lgput(a, b) % mod;
return 0;
}
