The engineering team needs to lay a 38-meter-long underground drainage pipe. There are enough 3-meter and 5-meter pipes in the warehouse. The pipes cannot be cut. How many different methods are there?
工程队要铺设38米长的地下排水管道，仓库中有3米和5米的两种管子足够多，管子不可以切割，一共有多少种不同的取法？
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