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• 2

  nogugu LV 6 @ 2026-5-26 12:39:47

  #include <bits/stdc++.h>
  using namespace std;
  
  #define int long long
  #define endl '\n'
  
  const double EPS = 1e-8;
  const int N = 2e5 + 5;
  
  int a[N];
  
  signed main() {
      ios::sync_with_stdio(0);
      cin.tie(0), cout.tie(0);
  
      int n;
      cin >> n;
      vector<int> vec;
      for (int i = 1; i <= n; i++) {
          vec.push_back(i);
      }
  
      do {
          for (int i = 0; i < n; i++)
              cout << vec[i] << " ";
          cout << endl;
      } while (next_permutation(vec.begin(), vec.end()));
      return 0;
  }