hdu 1263 水果

套用两个map一定要多留一个空格
map<string, map<string, int>> m1与map<string, map<string, int> > m1是不一样的

 >>就变成右移符号了

#include<iostream>
#include<map>
#include<string>
using namespace std;
map<string, map<string, int> > m1;
int main()
{
	int T;
	scanf("%d", &T);
	while(T--)
	{

		m1.clear();
		int n, m;
		string a, b;
		scanf("%d", &n);
		while(n--)
		{
			cin >> a >> b >> m;
			m1[b][a] += m;
		}

		map<string, map<string, int> >::iterator it;
		map<string, int>::iterator it1;
		for( it = m1.begin(); it != m1.end(); it++ )
		{
			cout << it->first << endl;
			for( it1 = it->second.begin(); it1 != it->second.end(); it1++ )
				cout << "   |----" << it1->first<< "(" << it1->second << ")" << endl;
		}
		if(T)
			puts("");

	}
	return 0;
}