Submission #815094

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Source Code Expand

#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define sz size()
#define all(a)  a.begin(), a.end()
#define allr(a) a.rbegin(), a.rend()
#define mod 1000000007
#define _for(it, a) for(__typeof(a.begin()) it = a.begin(); it != a.end(); ++it)

using namespace std;

int main(){
   int N, M;
   cin >> N >> M;
   vector<string> s;
   string t;
   for(int n = 1; n <= N; ++n){
      cin >> t;
      s.pb(t);
   }
   sort(all(s));
   for(int n = 0; n < s.sz; ++n){
      cout << s[n];
   }
   cout << endl;
   return 0;
}

Submission Info

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