#55404: c++解
#include <bits/stdc++.h>
using namespace std;
int main(){
int a,b;
while(cin>>a>>b){
if(a==-1&&b==-1)break;
if(a>b) swap(a,b);
cout<<min(b-a,(a-b+100)%100)<<endl;}
return 0;
}