import sys def cal(nums, m): a = sorted(nums) n = len(nums) index = a.index(nums[m-1]) return ("%.6f" % (index / n * 100)) if __name__ == "__main__": # 读取第一行的n n = int(sys.stdin.readline().strip()) temp = input().split(' ') for i in range(n): temp[i] = int(temp[i]) m = int(sys.st...