/in/foo.cc: In function 'int main()':
/in/foo.cc:15:57: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   15 |                         if(ch[j-1]<ch[j]||ch[j-1]==ch[j]&&ma[j-1]<ma[j])
      |                                           ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~