c_cpp C ++自定义排序对由asc，desc

Posted 2021-05-14

    // Given pairs of the form pair<int, int>, wish to sort by descending second
    // item, ascending first item
    sort(ALL(ans), [](const ii &x, const ii &y) {
      return (x.second > y.second ||
              (x.second == y.second && x.first < y.first));
    });