#include <iostream> 
#include <vector> 
 
using namespace std; 
 
int main() 
{ 
struct cat { 
 int lives = 9; 
 int weight = 2; 
 
 cat(int lives, int weight) { 
 this->lives = lives; 
 this->weight = weight; 
 }; 
 
 }; 
 vector <cat> cats; 
 int n; 
 cin » n; 
 int lives; 
 int weight; 
 for (int i = 0; i < n; i++) { 
 cin » lives; 
 cin » weight; 
 cats.push_back(cat(lives, weight)); 
 }; 
 int maxweight = cats[0].weight; 
 for (int i = 1; i < n; i++) { 
 if (cats[i].weight > maxweight) { 
 maxweight = cats[i].weight; 
 }; 
 }; 
 cout « maxweight; 
 return 0; 
}