USACO Bronze 2018 December - Back and Forth

Official Analysis

There's no need to copy paste essentially the same code into four different functions ...

Solution

Similar to the second solution from the analysis.

#include <bits/stdc++.h>
using namespace std;
 
using ll = long long;
using ld = long double;
using db = double; 
using str = string; // yay python!

using pi = pair<int,int>;
using pl = pair<ll,ll>;