摘要: Given four lists A, B, C, D of integer values, compute how many tuples (i, j, k, l) there are such that A[i] + B[j] + C[k] + D[l] is zero. To make pro 阅读全文
posted @ 2016-11-17 12:38 Grandyang 阅读(13972) 评论(4) 推荐(0)
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