/in/foo.cc: In function 'int main()':
/in/foo.cc:17:100: warning: suggest parentheses around comparison in operand of '==' [-Wparentheses]
   17 |                         if ((a[j].t<a[j+1].t) || (a[j].t==a[j+1].t && a[j].ch<a[j+1].ch) || (a[j].t==a[j+1].t==a[j].ch && a[j+1].ch && a[j].x>a[j+1].x)) {
      |                                                                                              ~~~~~~^~~~~~~~~~