Please choose the correct solution to the question: How to sweep the floors in a house?

Solution1: With a broom, sweep detritus into a pile in corner of the room. Sweep the pile of detritus into the dustpan. Repeat the process in one room.

Solution2: With a broom, sweep detritus into a pile in one corner of the room. Sweep the pile of detritus into the dustpan. Repeat the process in every room.

Answer format: solution1/solution2