• PAT天梯赛 L2-019. 悄悄关注 【STL】


    题目链接

    https://www.patest.cn/contests/gplt/L2-019

    思路
    将已关注的人 用 MAP存起来
    然后将点赞的用户中 没有关注的 用 VECTOR 存下来 并且求出 SUM
    再遍历那个 VECTOR 用另一个VECTOR 存下 点赞数 大于平均数 的人
    最后 排序 输出

    AC代码

    #include <cstdio>
    #include <cstring>
    #include <ctype.h>
    #include <cstdlib>
    #include <cmath>
    #include <climits>
    #include <ctime>
    #include <iostream>
    #include <algorithm>
    #include <deque>
    #include <vector>
    #include <queue>
    #include <string>
    #include <map>
    #include <stack>
    #include <set>
    #include <numeric>
    #include <sstream>
    #include <iomanip>
    #include <limits>
    
    using namespace std;
    typedef long long ll;
    typedef long double ld;
    typedef unsigned long long ull;
    typedef pair <int, int> pii;
    typedef pair <ll, ll> pll;
    typedef pair <string, int> psi;
    
    const double PI  = 3.14159265358979323846264338327;
    const double E   = exp(1);
    const double eps = 1e-6;
    
    const int INF  = 0x3f3f3f3f;
    const int maxn = 1e5 + 5;
    const int MOD  = 1e9 + 7;
    
    int main()
    {
        map <string, int> m;
        int n;
        scanf("%d", &n);
        string s;
        for (int i = 0; i < n; i++)
        {
            cin >> s;
            m[s] = 1;
        }
        scanf("%d", &n);
        double sum = 0.0;
        int num;
        vector <psi> v;
        vector <string> ans;
        for (int i = 0; i < n; i++)
        {
            cin >> s;
            scanf("%d", &num);
            sum += num;
            if (m[s] == 0)
                v.push_back(psi(s, num));
        }
        sum = sum * 1.0 / n;
        vector <psi>::iterator it;
        for (it = v.begin(); it != v.end(); it++)
        {
            if ((*it).second > sum)
                ans.push_back((*it).first);
        }
        if (ans.size())
        {
            sort(ans.begin(), ans.end());
            vector <string>::iterator iter;
            for (iter = ans.begin(); iter != ans.end(); iter++)
                cout << (*iter) << endl;
        }
        else
            printf("Bing Mei You");
    }
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  • 原文地址:https://www.cnblogs.com/Dup4/p/9433234.html
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