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0_0_39442526_10443.cpp: In function 'int main()':
0_0_39442526_10443.cpp:48:7: error: 'cin' was not declared in this scope
   48 | while(cin>>n)
      |       ^~~
0_0_39442526_10443.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <ios>
  +++ |+#include <iostream>
    2 | using namespace std;
0_0_39442526_10443.cpp:64:23: error: 'cout' was not declared in this scope
   64 | {for(int j=0;j<n;j++) cout<<c[i][j]<<" ";
      |                       ^~~~
0_0_39442526_10443.cpp:64:23: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_39442526_10443.cpp:65:1: error: 'cout' was not declared in this scope
   65 | cout<<endl;
      | ^~~~
0_0_39442526_10443.cpp:65:1: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_39442526_10443.cpp:65:7: error: 'endl' was not declared in this scope
   65 | cout<<endl;
      |       ^~~~
0_0_39442526_10443.cpp:2:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    1 | #include <ios>
  +++ |+#include <ostream>
    2 | using namespace std;