Xinjiang Provincial Collegiate Programming Contest 2021 D. Cocktail with Swap: 并查集

    #include<bits/stdc++.h>
    #include <unordered_map>
    using namespace std;
    template<class...Args>
    void debug(Args... args) {//Parameter pack
    auto tmp = { (cout << args << ' ', 0)... };
    cout << "\n";
    }
    typedef long long ll;
    typedef unsigned long long ull;
    typedef pair<ll, ll>pll;
    typedef pair<int, int>pii;
    const ll N = 1e5 + 5;
    const ll INF = 0x7fffffff;
    int f[N], cnt[N][26];
    int main() {
    ios_base::sync_w