This problem is about rearranging the numbers in a sum so that they are in non-decreasing order. Here is a step-by-step solution in Python:

1. First, we need to get the input string from the user. This string will contain the sum that Xenia needs to count.

```python
s = input().strip()
```

2. Next, we need to split the string into a list of numbers. We can do this by using the `split` method with "+" as the separator.

```python
numbers = s.split("+")
```

3. Now, we have a list of numbers, but they are still strings. We need to convert them to integers. We can do this using a list comprehension.

```python
numbers = [int(num) for num in numbers]
```

4. Now that we have a list of integers, we can sort it in non-decreasing order using the `sort` method.

```python
numbers.sort()
```

5. Finally, we need to convert the sorted list of integers back into a string with "+" between each number. We can do this using the `join` method.

```python
result = "+".join(str(num) for num in numbers)
```

6. Now, we can print the result.

```python
print(result)
```

So, the complete code is:

```python
s = input().strip()
numbers = s.split("+")
numbers = [int(num) for num in numbers]
numbers.sort()
result = "+".join(str(num) for num in numbers)
print(result)
```

This code will rearrange the summands in the input

Question

This problem is about rearranging the numbers in a sum so that they are in non-decreasing order. Here is a step-by-step solution in Python:

1. First, we need to get the input string from the user. This string will contain the sum that Xenia needs to count.

```python
s = input().strip()
```

2. Next, we need to split the string into a list of numbers. We can do this by using the `split` method with "+" as the separator.

```python
numbers = s.split("+")
```

3. Now, we have a list of numbers, but they are still strings. We need to convert them to integers. We can do this using a list comprehension.

```python
numbers = [int(num) for num in numbers]
```

4. Now that we have a list of integers, we can sort it in non-decreasing order using the `sort` method.

```python
numbers.sort()
```

5. Finally, we need to convert the sorted list of integers back into a string with "+" between each number. We can do this using the `join` method.

```python
result = "+".join(str(num) for num in numbers)
```

6. Now, we can print the result.

```python
print(result)
```

So, the complete code is:

```python
s = input().strip()
numbers = s.split("+")
numbers = [int(num) for num in numbers]
numbers.sort()
result = "+".join(str(num) for num in numbers)
print(result)
```

This code will rearrange the summands in the input

Knowee AI · Accepted Answer