#include<stdio.h>
int main(){
	int y1,y2,chamada;

	scanf("%d %d %d",&chamada,&y1,&y2);

		if(y1==999&&y2!=y1) printf("2\n");
		else if(y2==999&&y1!=y2) printf("1\n");
		else if(y1==999&&y2==999) printf("0\n");
		else if(y1==y2) printf("1\n");
		else if(abs(chamada-y1)>abs(chamada-y2) printf("2\n");
		else if(abs(chamada-y1)<abs(chamada-y2)) printf("1\n");
		else if(abs(chamada-y1)==abs(chamada-y2)){
			if(y1>y2) printf("1\n");
			else if(y2>y1) printf("2\n");
			}

	return 0;
	}