第一题： public static void main(String[] args) { Scanner in = new Scanner(System.in); int t = Integer.parseInt(in.nextLine().trim()); for (int i = 0; i < t; i++) { String[] strNK = in.nextLine().trim().split(" "); int n = Integer.parseInt(strNK[0]); int k = Integer.parseInt(strNK[1]); int cnt = 0; if (n > k) { cnt += n - k; // (k, k+1), (k, k+2), (k, n) for (int j = k + 1; j <= n - k; j++) { // (m, j) cnt += (n - k) / j; } } System.out.println(cnt); } }