#include<bits/stdc++.h> using namespace std; using ll=long long; using ull=unsigned long long; using i128=__int128_t; using u128=__uint128_t; using ld=long double; void solve() { int n,x,sum=0;//两种方式购买 1.搭配A和B 2.使用网购 cin >> n >> x; vector<int>a(n,0),b(n,0); for(int i=0;i<n...