Submission #72574842

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Source Code Expand

#include <bits/extc++.h>
using namespace std;

#include <atcoder/all>
using namespace atcoder;

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

#define repp(i, m, n) for(int i = (int)(m); i < (int)n; i++)
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define fore(x, a) for (auto &x : a)
#define rall(x) (x).rbegin(),(x).rend()
#define all(x) (x).begin(),(x).end()
#define co(a, x, b) (a <= x && x < b)
#define INF ((1LL<<62)-(1LL<<31))

typedef pair<int, int> pii;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;

int main() {
	int n;
	cin >> n;
	vector<string> s(n);
	rep(i, n) cin >> s[i];

	vector<pair<int, string>> t(n);
	rep(i, n) t[i].first = s[i].size(), t[i].second = s[i];
	sort(rall(t));
	rep(i, n) {
		t[i].second[0] = (char)(t[i].second[0] - (int)('a' - 'A'));
		cout << t[i].second[0];
	}
	cout << endl;
}

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