#include <bits/stdc++.h>
using namespace std;
int maxn, n, t, x;
int main() {
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int in1, in2;
    cin >> in1 >> in2;
    x -= in1 - t;
    if (x < 0) x = 0;
    x += in2;
    maxn = max(maxn, x);
    t = in1;
  }
  cout << t + x << " " << maxn;
  return 0;
}
