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  1. #include <iostream>
  2. #include <algorithm>
  3. using namespace std;
  4. int main() {
  5. string s1[12], s2[12];
  6. for (int i = 0; i < 12; ++i) { cin >> s1[i] >> s2[i]; }
  7. cout << (std::is_permutation(s1, s1 + 12, s2) ? "is permutation"
  8. : "is not permutation");
  9. }
  10.  
Success #stdin #stdout 0s 3480KB
stdin
1 2 3 4 5 6 7 8 9 10 11 12
12 11 10 9 8 7 6 5 4 3 2 1
stdout
is permutation