BOJ 28445 - 알록달록 앵무새 [C++]

문제

링크

풀이

#include <iostream>
#include <set>
#include <string>
#include <vector>
using namespace std;
 
void solve(void) {
  vector<string> v(4);
  for (int i=0; i<4; i++) cin >> v[i];
 
  set<string> ans;
  for (int i=0; i<4; i++) for (int j=0; j<4; j++) {
    ans.insert(v[i] + " " + v[j]);
  }
 
  for (const string &s : ans) {
    cout << s << "\n";
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}