UVA 10174

#define ll long long
#include <bits/stdc++.h>
using namespace std;

const int OO = 1e9;
const double EPS = 1e-9;



int main()
{
    ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
    //freopen("out.txt","w",stdout);
    string in;
    while(getline(cin,in)) {
        bool mult = false;
        //stringstream ss(in);
        for(int i = 0; i < in.length(); i++) {
            if(in[i] == ' ') {
                ll a = stoi(in.substr(0,i));
                ll b = stoi(in.substr(i+1));
                ll ans = 0;
                for(ll i = a; i <= b; i++) {
                    //ans += ((i%2 == 1) ||(i%4 == 0));
                    if((i%2 == 1) || (i%4 == 0)) {
                        ans++;
                    }
                }
                ans = b-a+1 - ans;
                cout << ans << "\n";
                mult = true;
                //cout << "a is " << a << " b is " << b << "\n";
                //cout << "diff is " << b-a+1 << "\n";
            }
        }
        if(mult) {
            continue;
        }
        ll n = stoi(in);
        bool neg = false;
        if(n == 0) {
            cout << "0 0\n";
            continue;
        }
        if(n < 0) {
            neg = true;
            n = abs(n);
        }
        if(n%2 == 1) {
            ll a = (1+n)/2;
            ll b = n-a;
            if(neg) {
                swap(a,b);
            }
            cout << a << " " << b << "\n";
        }
        else if(n%4 == 0) {
            ll a = (2 + (n/2))/2;
            ll b = (n/2)-a;
            if(neg) {
                swap(a,b);
            }
            cout << a << " " << b << "\n";
        }
        else {
            cout << "Bachelor Number.\n";
        }
        //cout << "n is " << n << "\n";
    }
    return 0;
}