摘要:
先上题目:12664 Interesting CalculatorThere is an interesting calculator. It has 3 rows of button.• Row 1: button 0, 1, 2, 3, . . . , 9. Pressing each butt... 阅读全文
摘要:
先上题目:12661 Funny Car RacingThere is a funny car racing in a city with n junctions and m directed roads.The funny part is: each road is open and closed... 阅读全文