// Croc Champ 2013 - Round 1 A SMSC
import java.io.*;
import java.io.ObjectInputStream.GetField;
import java.math.*;
import java.text.*;
import java.util.*;
//Codeforces
public class MainCodeforces1 {
private static MyScanner in;
private static PrintStream out;
// change to false before submitting
private static boolean LOCAL_TEST = false;
private static void solve() throws IOException
{
int N = in.nextInt();
int[] t = new int[N];
int[] c = new int[N];
for (int i = 0; i < N; i++) {
t[i] = in.nextInt();
c[i] = in.nextInt();
}
long lasttime = 0;
long qlen;
long curt;
curt = t[0];
qlen = c[0];
long maxq = qlen;
for (int i = 1; i < N; i++) {
if (qlen > 0) {
qlen--;
}
if (t[i] - curt - 1 <= qlen)
qlen = qlen - (t[i] - curt - 1);
else
qlen = 0;
qlen = qlen + c[i];
maxq = Math.max(maxq, qlen);
curt = t[i];
}
lasttime = curt + qlen;
out.print(lasttime);
out.print(" ");
out.println(maxq);
}
public static void main(String[] args) throws IOException {
// helpers for input/output
out = System.out;
if (LOCAL_TEST) {
in = new MyScanner("E:\\zin.txt");
}
else {
boolean usingFileForIO = false;
if (usingFileForIO) {
// using input.txt and output.txt as I/O
in = new MyScanner("input.txt");
out = new PrintStream("output.txt");
}
else {
in = new MyScanner();
out = System.out;
}
}
solve();
}
// =====================================
static class MyScanner {
Scanner inp = null;
public MyScanner() throws IOException
{
inp = new Scanner(System.in);
}
public MyScanner(String inputFile) throws IOException {
inp = new Scanner(new FileInputStream(inputFile));
}
public int nextInt() throws IOException {
return inp.nextInt();
}
public long nextLong() throws IOException {
return inp.nextLong();
}
public double nextDouble() throws IOException {
return inp.nextDouble();
}
public String nextString() throws IOException {
return inp.next();
}
}
}
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