The corridor of the school is 36 meters long. Originally, a potted flower was placed every 3 meters, but now it is changed to a potted flower every 4 meters. How many potted flowers can there be at most without changing positions? (put on both ends)
学校的走廊长36米，原来每3米放一盆花，现在改为每4米放一盆花．最多有多少盆花可以不必换位置？(两端都放)
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