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为什么我算的结果（P2）是Nan，分母也不是0呀。
跟你用啥版本没多大关系，按while循环开始前 k = 0; 计，当 k = 179, i = 51, j = 43 时，B(i,j) 是0，P(i-1,j) 是inf，这俩的乘积没法算，导致出现NaN，至于为啥，这得你自己回去检查。反正这时候P...
3 years ago | 0
| accepted
