/in/foo.cc: In function 'bool cmp(schedule, schedule)':
/in/foo.cc:13:39: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  return (n.year<m.year||n.year==m.year&&n.month<m.month||n.year==m.year&&n.month==m.month&&n.day<m.day);
                                       ^
/in/foo.cc:13:90: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  return (n.year<m.year||n.year==m.year&&n.month<m.month||n.year==m.year&&n.month==m.month&&n.day<m.day);
                                                                                          ^