View Compilation Error

0_0_38765557_12912.cpp: In function 'int main()':
0_0_38765557_12912.cpp:37:5: error: 'cin' was not declared in this scope
   37 |     cin>>T;
      |     ^~~
0_0_38765557_12912.cpp:3:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    2 | #include <cstring>
  +++ |+#include <iostream>
    3 | #define m(a,b) memset(a,b,sizeof a)
0_0_38765557_12912.cpp:45:9: error: 'string' was not declared in this scope
   45 |         string s1,s2;
      |         ^~~~~~
0_0_38765557_12912.cpp:3:1: note: 'std::string' is defined in header '<string>'; did you forget to '#include <string>'?
    2 | #include <cstring>
  +++ |+#include <string>
    3 | #define m(a,b) memset(a,b,sizeof a)
0_0_38765557_12912.cpp:48:18: error: 's1' was not declared in this scope; did you mean 'n1'?
   48 |             cin>>s1>>s2;
      |                  ^~
      |                  n1
0_0_38765557_12912.cpp:48:22: error: 's2' was not declared in this scope; did you mean 'n2'?
   48 |             cin>>s1>>s2;
      |                      ^~
      |                      n2