/in/foo.cc: In function 'int main()':
/in/foo.cc:8:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0;i<s.size();i++)
          ~^~~~~~~~~
/in/foo.cc:18:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=m+1;i<s.size();i++)
            ~^~~~~~~~~
/in/foo.cc:20:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(s[i]==32||i==s.size()-1)
                ~^~~~~~~~~~~~
/in/foo.cc:41:13: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(v[i]>=97&&v[i]<=122||v[i]>=65&&v[i]<=90)