UVa - 12468 - Zapping

#include <iostream>
#include <algorithm>
using namespace std;

int main(){
    int stayed, reached, mx, mn, ans1, ans2, ans;
    while(cin >> stayed >> reached){
        if(stayed == -1 && reached == -1)break;
        mx = max(stayed, reached);
        mn = min(stayed, reached);
        ans1 = mx - mn;
        ans2 = (mn+100) - mx;
        ans = min(ans1, ans2);
        cout << ans << endl;
    }
    return 0;
}