/in/foo.cc: In function 'int count(int)':
/in/foo.cc:18:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for (int l=x;l;l>>=1)
     ^~~
/in/foo.cc:20:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  return s;
  ^~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:33:29: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    if(s=='H') field[i]|=1<<j-1;
                            ~^~