#32 · #353 · Design Snake Game(贪吃蛇游戏)

Design a Snake game on a width x height grid. The snake starts at (0, 0) with length 1. Food positions are given in advance. Implement move(direction) returning the current score, or -1 if the snake runs into a wall or into itself. Constraints: 1 <= width, height <= 10^4, 1 <= food.length <= 50.