#include <iostream>
#include <map>
using namespace std;

bool cmp(int a, int b){
	return a < b;
}

int main(){
	auto cmpl = [](int a, int b){
		return a > b;
	};
	multimap<int, string, bool(*)(int, int)> a(cmp);
	multimap<int, string, decltype(cmpl)> b(cmpl);
	a.insert({{1,"111"},{2,"222"},{1,"11"},{1,"1"},{2,"22"},{3,"333"}});//emplace只能用make_pair，不能直接这么写
	//pair<const int, string>，Key是const修饰的 
	for(pair<int, string> x : a){
		cout << x.first << ", " << x.second << " "; 
	}
	cout << endl;
	cout << a.find(1)->second << " " << a.count(1) << endl; 
	a.erase(a.find(1));
	cout << a.find(1)->second << " " << a.count(1) << endl;
	return 0;
} 
/*
1, 111 1, 11 1, 1 2, 222 2, 22 3, 333
111 3
11 2
*/