overloaded operator

struct student {string name;int score;bool operator<(const student& a) const {return score < a.score || (score == a.score && name > a.name);// The this pointer is omitted above, the full expression is as follows:// this->scorescore==a.score&&this->name>a.name);}};priority_queue pq;

The above code overloads the less than sign as a member function, of course, it is also possible to overload it as a non-member function.

struct student {string name;int score;};bool operator<(const student& a, const student& b) {return a.score < b.score || (a.score == b.score && a.name > b.name);}priority_queue pq;

Constructor is equivalent to { } in C++

If you want to open an array, you need to add = 0 as initialization

struct Queue {int num, id;Queue(int _num = 0, int _id = 0) :num(_num), id(_id) {}bool operator < (const Queue &t) const {if(num == t.num) return id < t.id;return num < t.num;}}q[N];