STL中map的使用 || HDU 1263 水果

map可以映射map……

然后在map里面会自己排序

惊了

注意输出格式 回车的输出

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <queue>
#include <algorithm>
#include <string>
#include <map>
using namespace std;
map<string, map<string, int> > mp;
int main()
{
    int T;
    cin >> T;
    while(T--)
    {
        int n;
        cin >> n;
        mp.clear();
        string place, fruit;
        int num;
        for(int i = 0; i < n; i++)
        {
            cin >> fruit >> place >> num;
            mp[place][fruit] += num;
        }
        for(map<string, map<string, int> >::iterator iter1 = mp.begin(); iter1 != mp.end(); iter1++)
        {
            cout << iter1 -> first << endl;
            for(map<string, int>::iterator iter2 = iter1->second.begin(); iter2 != iter1->second.end(); iter2++)
            {
                cout << "   |----" << iter2->first << "(" << iter2->second << ")" << endl;
            }
        }
        if(T) cout << endl;
    }
    return 0;
}