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Cod sursa(job #967093)
#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("fractal.in");
ofstream fout("fractal.out");
int K, X, Y;
int base[2][2] = {{0, 3}, {1, 2}};
int compute_fractal(int k, int x, int y);
int main() {
fin >> K >> X >> Y;
fout << compute_fractal(K, X, Y);
return 0;
}
int compute_fractal(int k, int x, int y) {
if (k == 1) {
return base[x - 1][y - 1];
}
int l = (1 << (k - 1));
if (x <= l && y <= l) {
return compute_fractal(k - 1, y, x);
}
if (x <= l && y > l) {
return compute_fractal(k - 1, x - l, y) + l * l;
}
if (x > l && y > l) {
return compute_fractal(k - 1, x - l, y - l) + 2 * l * l;
}
return compute_fractal(k - 1, y - 1, x) + 3 * l * l;
}