#include <stdio.h>
main(int argc, char *argv[]) {

	int A = atoi(argv[1]);
	int B = atoi(argv[2]);
	int Yasuo = 1;

	if (A + Yasuo > B) {
		printf("NO\n");
	}
	else {
		printf("YES\n");
	}

	printf("%d\n", A + Yasuo - B);

}