#include <iostream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;
 
struct line{
	char f1,f5;  // give them mneaningful names
	int f2,f3,f4;
	friend std::istream &operator>>(std::istream &is, line &l) {
		is >> l.f1;
		is >> l.f2;
		is >> l.f3;
		is >> l.f4;
		is >> l.f5;
		return is;
	}
};
 
 
int main() {
 
	string input = "J 123 7 3 M\nK 123 7 3 E\nH 16 89 3 M";
	stringstream ss(input);
	vector<line> v;
	line current;
 
	while(ss >> current){
		v.push_back(current);
	}
	for (auto &val: v){
		cout<< val.f1 << endl;
	}
 
	return 0;
}

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