#include <bits/stdc++.h>

using namespace std;
#define more ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define endl "\n"
#define pb push_back
#define FloatCout std::cout << std::fixed << std::setprecision(10)
const int N = 2e5 + 5, MOD = 1e9 + 7, inf = 0x3f3f3f3f;
const long long INF = 1e18;
typedef long long LL;
typedef unsigned long long usLL;
typedef pair<int, int> PII;

inline void solve() 
{
	LL n; cin >> n;
	std::vector<pair<LL, LL>> a(n + 1);

	for (int i = 1; i <= n; i++)
		cin >> a[i].first >> a[i].second;

	sort(a.begin(), a.end());
	a[0] = make_pair(a[1].first, a[1].first);
	LL ans1 = 0, ans2 = 0, len = 0, r = a[1].first;

	for (int i = 1; i <= n; i++)
	{
		if (a[i].first <= r)
		{
			len += max(a[i].second - r, 1LL * 0);
			r = max(r, a[i].second);
		}
		else
		{
			ans1 = max(len, ans1);
			ans2 = max(ans2, a[i].first - r);
			r = max(r, a[i].second);
			len = 0;
		}
	}

	ans1 = max(len, ans1);

	cout << ans1 << ' ' << ans2 << endl;
}

int main()
{
    more;
    solve();
    return 0;
}