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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. bool isIncreasing(const string &num) {
  5. for (size_t i = 1; i < num.size(); i++) {
  6. if (num[i] < num[i - 1]) return false;
  7. }
  8. return true;
  9. }
  10.  
  11. bool isDecreasing(const string &num) {
  12. for (size_t i = 1; i < num.size(); i++) {
  13. if (num[i] > num[i - 1]) return false;
  14. }
  15. return true;
  16. }
  17.  
  18. void checkNumber(const string &num) {
  19. if (isIncreasing(num) || isDecreasing(num)) {
  20. cout << "YES" << endl;
  21. } else {
  22. cout << "NO" << endl;
  23. }
  24. }
  25.  
  26. int main() {
  27. int t;
  28. cin >> t;
  29. while (t--) {
  30. string num;
  31. cin >> num;
  32. checkNumber(num);
  33. }
  34. return 0;
  35. }
Success #stdin #stdout 0.01s 5288KB
stdin
Standard input is empty
stdout
Standard output is empty