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Mission 3 Solution: Sum of Fourth Powers of Negative Numbers Description: This program processes multiple test cases to calculate the sum of fourth powers of negative numbers from each test case. Input Format: - First line: N (number of test cases) - For each test case: - First line: X (number of elements) - Second line: Space-separated numbers …
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| def main(): | |
| import sys | |
| def get_input(): | |
| """Get input either from stdin or allow manual input""" | |
| if sys.stdin.isatty(): # If running interactively | |
| try: | |
| n = int(input("Enter number of test cases: ")) | |
| if n <= 0: | |
| print("Number of test cases must be positive") | |
| return None | |
| lines = [str(n)] | |
| print(f"Enter {n} test cases:") | |
| for i in range(n): | |
| print(f"\nTest case #{i + 1}:") | |
| x = int(input("Enter number of elements: ")) | |
| if x <= 0: | |
| print("Number of elements must be positive") | |
| return None | |
| lines.append(str(x)) | |
| numbers = input("Enter space-separated numbers: ") | |
| lines.append(numbers) | |
| return lines | |
| except ValueError as e: | |
| print(f"Invalid input: {e}") | |
| return None | |
| else: # If input is being piped or redirected | |
| return sys.stdin.read().splitlines() | |
| def process_case(index, remaining_cases, lines): | |
| """Process a single test case and return the result""" | |
| if remaining_cases == 0: | |
| return "" | |
| if index + 1 >= len(lines): | |
| return "-1" | |
| try: | |
| x = int(lines[index]) | |
| if x <= 0: | |
| return "-1\n" + process_case(index + 2, remaining_cases - 1, lines) | |
| y_values = lines[index + 1].strip().split() | |
| if len(y_values) != x: | |
| return "-1\n" + process_case(index + 2, remaining_cases - 1, lines) | |
| # Calculate sum of fourth powers of negative numbers | |
| result = 0 | |
| for val_str in y_values: | |
| try: | |
| val = int(val_str) | |
| if val < 0: # Only process negative numbers | |
| result += val ** 4 | |
| except ValueError: | |
| return "-1\n" + process_case(index + 2, remaining_cases - 1, lines) | |
| return str(result) + "\n" + process_case(index + 2, remaining_cases - 1, lines) | |
| except ValueError: | |
| return "-1\n" + process_case(index + 2, remaining_cases - 1, lines) | |
| try: | |
| lines = get_input() | |
| if not lines: | |
| print("No input provided") | |
| return | |
| total_cases = int(lines[0]) | |
| if total_cases <= 0: | |
| print("Number of test cases must be positive") | |
| return | |
| output = process_case(1, total_cases, lines).rstrip("\n") | |
| print("\nResults:") | |
| print(output) | |
| except Exception as e: | |
| print(f"Error: {str(e)}") | |
| if __name__ == "__main__": | |
| main() |
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