摘要：
#include <bits/stdc++.h> using namespace std; const int N = 10000; int n; unsigned long long res=0; struct Bag{ int rnval; int jyval; int weight; }bag 阅读全文
摘要：
#include <bits/stdc++.h> using namespace std; const int N = 1000001; int l,r,n,m,w; double dp[N][2]; double res; int main(){ ios::sync_with_stdio(fals 阅读全文