CF - USB vs. PS/2
Author: Benjamin Qi
Greedy
As described in editorial.
#include <bits/stdc++.h>#include <ext/pb_ds/assoc_container.hpp>using namespace std;using namespace __gnu_pbds;typedef long long ll;typedef vector<int> vi;typedef pair<int, int> pii;template <class T>
Two Pointers
As described in editorial.
#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>;
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