★4
001 - Yokan Party(★4)
003 - Longest Circular Road(★4)
008 - AtCounter(★4)
012 - Red Painting(★4)
026 - Independent Set on a Tree(★4)
028 - Cluttered Paper(★4)
034 - There are few types of elements(★4)
042 - Multiple of 9(★4)
043 - Maze Challenge with Lack of Sleep(★4)
058 - Original Calculator(★4)
063 - Monochromatic Subgrid(★4)
070 - Plant Planning(★4)
072 - Loop Railway Plan(★4)
085 - Multiplication 085(★4)
緑dif