12468

#include <iostream>
#include <cstdio>
#include <cstdio>
#include <cstring>
#include <vector>
#include <cmath>
#include <cstdlib>

#define INF 1000000
#define ll long long

using namespace std;

int main()
{
	int m,n,diff1,diff2;
	while(scanf("%d%d",&m,&n) && m!=-1 && n!=-1)
	{
		if(m==-1 && n==-1)
		break;
		diff1 = abs(m-n);
		if(diff1<=50)
		printf("%d\n",diff1);
		else
		printf("%d\n",100-diff1);
	}
	return 0;
}