#27405: _CPP
11030067@mail.hpsh.tp.edu.tw
(和平110級鄧雨珊)
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, 100+a-b) <<endl;
}
}