Submission #1585772

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Source Code Expand

#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "string"
#include "map"
#include "iomanip"
#include "random"

using namespace std;

const long long int MOD = 1000000007;
const long double EPS = 0.00000001;
const long double PI = 3.1415926535897932384626433;

long long int N, M, K, H, W;
long double L, R;



int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	cin >> N;
	string ret;
	for (int i = 0; i < N; i++) {
		string s, t, u;
		cin >> s >> t >> u;
		if (s == "END") {
			ret += u.back();
		}
		else if (s == "BEGINNING") {
			ret += u[0];
		}
		else {
			ret += u[u.size() / 2];
		}
	}
	cout << ret << endl;
	return 0;
}

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