#include <iostream>
#include <cstdio>
#define N 24

int center;
int centerSq;

int splits = 1;

bool filled(int x, int y) {
	return (x-center)*(x-center) + (y-center)*(y-center) <= centerSq;
}

void parse_range(int xLow, int xHigh, int yLow, int yHigh) {
	bool a,b,c,d;
	a = filled(xLow,yLow);
	b = filled(xLow,yHigh-1);
	c = filled(xHigh-1,yLow);
	d = filled(xHigh-1,yHigh-1);

	if (a && b && c && d || !(a || b || c || d)) {
//		printf("We did not need to split: (%d,%d) to (%d,%d)\n",xLow,yLow,xHigh,yHigh);
		return;
	}

//	printf("Splitting: (%d,%d) to (%d,%d)\n",xLow,yLow,xHigh,yHigh);
	splits++;

	int xMid = xLow + (xHigh - xLow) / 2;
	int yMid = yLow + (yHigh - yLow) / 2;
	parse_range(xLow,xMid,yLow,yMid);
	parse_range(xLow,xMid,yMid,yHigh);
	parse_range(xMid,xHigh,yLow,yMid);
	parse_range(xMid,xHigh,yMid,yHigh);

}

int main() {
	center = 1 << (N-1);
	centerSq = center * center;

	parse_range(0,1 << N-1,0,1 << N-1);
	parse_range(0,1 << N-1,1 << N-1,1 << N);
	parse_range(1 << N-1,1 << N,0,1 << N-1);
	parse_range(1 << N-1,1 << N,1 << N-1,1 << N);

	std::cout << splits;

}