/in/foo.cc: In function 'void judge(int)':
/in/foo.cc:10:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(lc >= s.length()) return;
        ^
/in/foo.cc:11:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if((lc < s.length() && rc >= s.length()) 
         ^
/in/foo.cc:11:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if((lc < s.length() && rc >= s.length()) 
                            ^
/in/foo.cc:12:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  || !(s[lc] == '#'&&s[rc] =='#' || s[lc] != '#' && s[rc] != '#')) {