Banzhuan #include<bits/stdc++.h> using namespace std; #define fi first #define se second #define mp make_pair #define pb push_back #define rep(i, a, b) for(int i=(a); i<(b); i++) #define per(i, a, b) for(int i=(b)-1; i>=(a); i--) #define sz(a) (int)a.size() #define de(a) cout << #a...