29 lines
859 B
Java
29 lines
859 B
Java
import java.util.*;
|
|
import java.io.*;
|
|
|
|
public class Main {
|
|
static class pair{
|
|
public int first, second;
|
|
public pair(int a, int b){
|
|
first = a;
|
|
second = b;
|
|
}
|
|
}
|
|
public static void main(String[] args) throws IOException, ClassNotFoundException {
|
|
// Scanner sc = new Scanner(new File("ONLINE.in"));
|
|
Scanner sc = new Scanner(System.in);
|
|
int n = sc.nextInt();
|
|
ArrayList<pair> a = new ArrayList<>();
|
|
for(int i=0;i<n;i++) a.add(new pair(sc.nextInt(), sc.nextInt()));
|
|
a.sort((pair x, pair b) -> {
|
|
return x.first - b.first;
|
|
});
|
|
int now = 0;
|
|
for(int i=0;i<n;i++){
|
|
if(a.get(i).first>=now) now=a.get(i).first+a.get(i).second;
|
|
else now+=a.get(i).second;
|
|
}
|
|
System.out.println(now);
|
|
}
|
|
}
|