#include <vector>
#include <iostream>

using namespace std;

void moreInteresting();

int main(){
  moreInteresting();
  
  return 0;
}

int max(const vector<int> &nums) const{
  int max = nums[0];
  for( int i = 1; i < nums.size(); i++ ){
    if( nums[i] > max ){
      max = nums[i];
    }
  }
  
  //nums[0] = 15;
  
  return max;
}

void moreInteresting(){
  vector<int> nums;
  nums.push_back(1);
  nums.push_back(2);
  nums.push_back(3);

  int val = max(nums);
  cout << val << endl;
  
  cout << nums[0] << endl;
}