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  1. #include <iostream>
  2.  
  3. int main() {
  4. unsigned u = 0;
  5.  
  6. if (std::cin >> u) {
  7. std::cout << u << std::endl;
  8. } else {
  9. std::cout << "KO\n";
  10. }
  11. }
Success #stdin #stdout 0s 15232KB
stdin
-42
stdout
4294967254