摘要：GMOJ 6912 数论(math) \(Description\) 求 \[ \sum_{i = 1}^{n}{\sum_{j = 1}^{m}{gcd^n(i, j) \sum_{k = 1}^{ij}{[i \bot k][j \bot k]k}}} \] \(Data\) \(n, \ m 阅读全文

摘要：Description Input Output Sample Input 2 6 2 2 3 3 3 3 3 23 3 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Sample Output 2 7 7 15 7 23 2 9 9 24 9 39 9 阅读全文