经典游戏俄罗斯方块的一种简单实现，支持玩家信息的保存和统计。-A classic game of Tetris simple implementation, support the players the preservation of information and statistics.

此为24点游戏。游戏随机给出四张牌，由玩家输入算式，程序计算正确与否，统计玩家游戏信息，并有游戏说明-This is a 24-point game. Given four random game cards, enter the formula by the players, the program calculates correct or not, the game player statistics information, and game instructions