#include <stdio.h>
#include <stdint.h>


int32_t max(int32_t x, int32_t y){ return sizeof(union{char X[x], Y[y];}); }
int main(void) {
	printf("%d\n",max(12,-12));

	printf("%d\n",max(0,-1));
	printf("%d\n",max(-1,0));
	printf("%d\n",max(-1,21));

	return 0;
}