#include <vector>
#include <iostream>

//using namespace std;

void simpleVersion();

int main(){
  simpleVersion();

  return 0;
}

int max(std::vector<int> nums){
  int max = nums[0];
  for( int i = 1; i < nums.size(); i++ ){
    if( nums[i] > max ){
      max = nums[i];
    }
  }
  
  return max;
}

void simpleVersion(){
  std::vector<int> nums;
  nums.push_back(1);
  nums.push_back(2);
  nums.push_back(3);

  int val = max(nums);
  std::cout << val << std::endl;	
}

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

  std::vector<int> nums2 = nums;
  nums[0] = 15;

  int val = max(nums2);
  std::cout << val << std::endl;
}