摘要:
Simon loves neatness. So before he goes to bed, Simon wants to complete all chores in the house.Simon's house looks like a rectangular table consisting ofnrows andncolumns from above. All rows of the table are numbered from1tonfrom top to bottom. All columns of the table are numbered from1tonfro 阅读全文
摘要:
One day Greg and his friends were walking in the forest. Overall there werenpeople walking, including Greg. Soon he found himself in front of a river. The guys immediately decided to get across the river. Luckily, there was a boat by the river bank, just where the guys were standing. We know that th 阅读全文