zoukankan      html  css  js  c++  java
  • Jam's balance set 暴力

    Jim has a balance and N weights. (1N20)(1≤N≤20) 
    The balance can only tell whether things on different side are the same weight. 
    Weights can be put on left side or right side arbitrarily. 
    Please tell whether the balance can measure an object of weight M.

    InputThe first line is a integer T(1T5)T(1≤T≤5), means T test cases. 
    For each test case : 
    The first line is NN, means the number of weights. 
    The second line are NN number, i'th number wi(1wi100)wi(1≤wi≤100) means the i'th weight's weight is wiwi. 
    The third line is a number MM. MM is the weight of the object being measured.
    OutputYou should output the "YES"or"NO".Sample Input

    1
    2
    1 4
    3
    2
    4
    5

    Sample Output

    NO
    YES
    YES
    
    
            
     

    Hint

    For the Case 1:Put the 4 weight alone
    For the Case 2:Put the 4 weight and 1 weight on both side
    #include<iostream>
    #include<cstdio>
    #include<cmath>
    #include<cstring>
    #include<sstream>
    #include<algorithm>
    #include<queue>
    #include<vector>
    #include<cmath>
    #include<map>
    #include<stack>
    #include<set>
    #include<memory>
    #include<bitset>
    #include<string>
    #include<functional>
    using namespace std;
    typedef long long LL;
    typedef unsigned long long ULL;
    
    #define MAXN 23
    #define INF 0x3f3f3f3f
    /*
    给你一个数字M
    +-x +-y 能否==M
    */
    int a[MAXN], n, m;
    set<int> s;
    int main()
    {
        int T, tmp;
        scanf("%d", &T);
        while (T--)
        {
            s.clear();
            scanf("%d", &n);
            for (int i = 1; i <= n; i++)
                scanf("%d", &a[i]);
            //int t1, t2;
            for (int i = 1; i <= n; i++)
            {
                set<int>::iterator e = s.end();
                vector<int> t;
                for (set<int>::iterator it = s.begin(); it != s.end(); it++)
                {
                    if (!s.count(*it + a[i]))
                        t.push_back(*it + a[i]);
                    if (!s.count(abs(*it - a[i])))
                        t.push_back(abs(*it - a[i]));
                }
                s.insert(a[i]);
                for (int i = 0; i < t.size(); i++)
                    s.insert(t[i]);
            }
            scanf("%d", &m);
            while (m--)
            {
                scanf("%d", &tmp);
                if (s.count(tmp))
                    printf("YES
    ");
                else
                    printf("NO
    ");
            }
        }
    }
  • 相关阅读:
    VS2010 自动跳过代码现象
    Reverse Linked List II 【纠结逆序!!!】
    Intersection of Two Linked Lists
    Linked List Cycle II
    Remove Nth Node From End of List 【另一个技巧,指针的指针】
    Swap Nodes in Pairs
    Merge Two Sorted Lists
    Remove Duplicates from Sorted List
    Linked List Cycle
    Dungeon Game
  • 原文地址:https://www.cnblogs.com/joeylee97/p/7395475.html
Copyright © 2011-2022 走看看