# Test

# Case 0

```
? 0
? 0
1
```

# Test 1

```
? 0
? 10
11
```

# Test 2

```
? 1
? 0
2
```

# Test 3

```
? 1
? 1
3
```

# Test 4

```
? 3
? 4
125
```

# Test 5

```
? 1
? 4
65533
```