在同一点查找3个数组中的值

def find_value_in_arrays(arr1, arr2, arr3, target):
    for num1 in arr1:
        for num2 in arr2:
            for num3 in arr3:
                if num1 == num2 == num3 == target:
                    return target
    return "未找到匹配的值"

# 示例用法
array1 = [1, 2, 3, 4]
array2 = [2, 3, 4, 5]
array3 = [3, 4, 5, 6]
target_value = 4

result = find_value_in_arrays(array1, array2, array3, target_value)
print(result)