{"trustable":false,"sections":[{"title":"","value":{"format":"MD","content":"Giving you the code below, you should calculate the result of **F(n)**\n\n```cpp\nlong long F(int n) {\n long long res \u003d 0;\n for (int i \u003d 1; i \u003c\u003d n; i++) {\n res +\u003d n / i;\n }\n return res;\n}\n```"}},{"title":"Input","value":{"format":"MD","content":"Input starts with an integer **T (≤ 1000)**, denoting the number of test cases.\n\nEach case starts with a line containing an integer **n (1 ≤ n \u003c 2147483648)**."}},{"title":"Output","value":{"format":"MD","content":" \n For each case, print the case number and **F(n)** calculated by the code.\n "}},{"title":"Sample Input","value":{"format":"MD","content":"11\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n2147483647"}},{"title":"Sample Output","value":{"format":"MD","content":"Case 1: 1\nCase 2: 3\nCase 3: 5\nCase 4: 8\nCase 5: 10\nCase 6: 14\nCase 7: 16\nCase 8: 20\nCase 9: 23\nCase 10: 27\nCase 11: 46475828386"}}]}