"""# ### 谜题描述 Let f(i) denote the minimum positive integer x such that x is not a divisor of i. Compute ∑_{i=1}^n f(i) modulo 10^9+7. In other words, compute f(1)+f(2)+...+f(n) modulo 10^9+7. Input The first line contains a single integer t (1≤ t≤ 10^4), the number of test cases. Then t cases follow. The only line of each test case contains a single integer n (1≤ n≤ 10^{16}). Output For each test case, output a single integer ans, where ans=∑_{i=1}^n f(i) modulo 10^9+7. Example Input 6 1 2 3 4 10 10000000000000000 Output 2 5 7 10 26 366580019 Note In the fourth test case n=4, so ans=f(1)+f(2)+f(3)+f(4). * 1 is a divisor of 1 but 2 isn't, so 2 is the minimum positive integer that isn't a divisor of 1. Thus, f(1)=2. * 1 and 2 are divisors of 2 but 3 isn't, so 3 is the minimum positive integer that isn't a divisor of 2. Thus, f(2)=3. * 1 is a divisor of 3 but 2 isn't, so 2 is the minimum positive integer that isn't a divisor of 3. Thus, f(3)=2. * 1 and 2 are divisors of 4 but 3 isn't, so 3 is the minimum positive integer that isn't a divisor of 4. Thus, f(4)=3. Therefore, ans=f(1)+f(2)+f(3)+f(4)=2+3+2+3=10. Here is a reference code to solve this task. You can use this to help you genereate cases or validate the solution. ```python import sys import os from io import BytesIO sys.stdin = BytesIO(os.read(0, os.fstat(0).st_size)) f = sys.stdin line = lambda: f.readline().strip('\r\n').split() def solve(): idx = 0 off = 1 s = N mul = 1 while mul <= N: mul = 1 for i in range(idx,-1,-1): f = FACT[i] if mul % f != 0: mul *= f start = mul step = mul d = (N-start)//step + 1 off = 1 if idx == 0 else FACT[idx+1] - FACT[idx] s += d * off s %= M idx += 1 return str(s) FACT = [1,2,3,4,5,7,8,9,11,13,16,17,19,23,25,27,29,31,32,37,41,43] M = 10**9 + 7 T = int(line()[0]) for test in range(1,T+1): N = int(line()[0]) sys.stdout.write(solve()) sys.stdout.write(\"\n\") f.close() ``` 请完成上述谜题的训练场环境类实现,包括所有必要的方法。 """ from bootcamp import Basebootcamp import random import re from bootcamp import Basebootcamp class Cstrangefunctionbootcamp(Basebootcamp): def __init__(self, min_n=1, max_n=10**16, include_boundary=True): if min_n < 1: raise ValueError("min_n must be at least 1") if max_n < min_n: raise ValueError("max_n must be greater than or equal to min_n") self.min_n = min_n self.max_n = max_n self.include_boundary = include_boundary def case_generator(self): # 生成具有全面覆盖的测试用例 if self.include_boundary and random.random() < 0.15: boundary_n = [1, 2, 3, 4, 10, 10000000000000000] n = random.choice(boundary_n) else: r = random.random() if r < 0.3: # 30%小值 n = random.randint(1, 100) elif r < 0.6: # 30%中等值 n = random.randint(10**3, 10**6) elif r < 0.85: # 25%大值 n = random.randint(10**9, 10**12) else: # 15%极值 n = random.randint(10**15, self.max_n) n = max(self.min_n, min(n, self.max_n)) return {'n': n} @staticmethod def prompt_func(question_case): n = question_case['n'] return f"""请计算∑f(i) mod 1e9+7(1≤i≤{n}),其中f(i)是i的最小非因数。 规则说明: 1. f(i)定义为i的最小非除数正整数 2. 例如f(4)=3,因为1、2是4的因数但3不是 3. 总和需要对1e9+7取模 输出要求: 将最终答案放在[answer]标签内,如[answer]123[/answer]""" @staticmethod def extract_output(output): # 增强型数字提取逻辑 matches = re.findall(r'\[answer\](.*?)\[/answer\]', output, re.DOTALL) if not matches: return None number_str = re.sub(r'[^0-9]', '', matches[-1].strip()) try: return int(number_str) % (10**9+7) if number_str else None except: return None @classmethod def _verify_correction(cls, solution, identity): try: return solution == cls.compute_answer(identity['n']) except: return False @staticmethod def compute_answer(n): # 优化后的参考实现 FACT = [1,2,3,4,5,7,8,9,11,13,16,17,19,23,25,27,29,31,32,37,41,43] MOD = 10**9+7 res = n % MOD idx = 0 while idx < len(FACT): # 计算当前阶乘基 product = 1 for f in reversed(FACT[:idx+1]): if product % f != 0: product *= f if product > n: break if product > n: break # 计算贡献值 offset = FACT[idx+1] - FACT[idx] if idx > 0 else 1 count = (n - product) // product + 1 res = (res + count * offset) % MOD idx += 1 return res