hesic73

/*
 * C++20 Standard Required
 * Author: Sicheng He
 * Date: 2024-02-06
 */
#include<iostream>
#include<queue>
#include<vector>
#include<concepts>
#include<optional>

hesic73

import java.util.Iterator;
import java.util.NoSuchElementException;

class Solution {

   private static boolean withBounds(int x, int y, int m, int n) {
      return x >= 0 && x < m && y >= 0 && y < n;
   }

   private static int flatten(int x, int y, int m, int n) {

hesic73

import java.util.*;
import java.util.function.Consumer;

/**
 * An enhanced ArrayDeque enabling indexed access and modification via {@code get(int index)} and {@code set(int index, E e)} methods.
 * The majority of this implementation is directly borrowed from the official ArrayDeque.
 *
 * @param <E> the type of elements held in this collection
 */
public class MyArrayDeque<E> extends AbstractCollection<E> implements Deque<E> {

hesic73

#include<iostream>
#include<vector>
#include<set> 
// we assume that for the same elements, the iteration order is always the same
// which is not the case for unordered_map



void _topological_ordering(std::set<int>& s,
	std::vector<int>& v,