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0_0_38891256_20456.cpp: In function 'int main()':
0_0_38891256_20456.cpp:9:9: error: 'cin' was not declared in this scope
    9 |         cin >> T;
      |         ^~~
0_0_38891256_20456.cpp:3:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    2 | #include <string>
  +++ |+#include <iostream>
    3 | using namespace std;
0_0_38891256_20456.cpp:36:25: error: 'cout' was not declared in this scope
   36 |                         cout << a[i] << " ";
      |                         ^~~~
0_0_38891256_20456.cpp:36:25: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_38891256_20456.cpp:38:17: error: 'cout' was not declared in this scope
   38 |                 cout << endl;
      |                 ^~~~
0_0_38891256_20456.cpp:38:17: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_38891256_20456.cpp:38:25: error: 'endl' was not declared in this scope
   38 |                 cout << endl;
      |                         ^~~~
0_0_38891256_20456.cpp:3:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    2 | #include <string>
  +++ |+#include <ostream>
    3 | using namespace std;