/in/foo.cc: In function 'int main()':
/in/foo.cc:18:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   while (c<65||c>90) c=getchar(); if (c=='H') nap[i]|=1<<m-1;
   ^~~~~
/in/foo.cc:18:35: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
   while (c<65||c>90) c=getchar(); if (c=='H') nap[i]|=1<<m-1;
                                   ^~
/in/foo.cc:18:59: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   while (c<65||c>90) c=getchar(); if (c=='H') nap[i]|=1<<m-1;
                                                          ~^~
/in/foo.cc:19:64: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   for (register int j=1;j<m;j++) nap[i]|=getchar()=='H'?(1<<m-j-1):0;
                                                             ~~~^~
/in/foo.cc:23:67: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   for (register int j=0;j<m-1&&!flag;j++) if ((i&(1<<j))&&(i&(1<<j+1))) flag=1;
                                                                  ~^~
/in/foo.cc:25:73: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
         for (register int j=0;j<m-2&&!flag;j++) if ((i&(1<<j))&&(i&(1<<j+2))) flag=1;
                                                                        ~^~
/in/foo.cc:32:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (register int i=0;i<vec.size();i++) 
                        ~^~~~~~~~~~~
/in/foo.cc:34:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (register int i=0;i<vec.size();i++)
                        ~^~~~~~~~~~~
/in/foo.cc:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (register int j=0;j<vec.size();j++)
                         ~^~~~~~~~~~~
/in/foo.cc:42:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for (register int i=0;i<vec.size();i++){
                            ~^~~~~~~~~~~
/in/foo.cc:44:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
          for (register int j=0;j<vec.size();j++){
                                ~^~~~~~~~~~~
/in/foo.cc:46:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
              for (register int k=0;k<vec.size();k++){
                                    ~^~~~~~~~~~~