> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hnuicpc.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Contest #4 Editorial

> Editorials for Level 0 — Contest #4.

## Problem A: Concert Tickets

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```

***

## Problem B: Movie Festival

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```

***

## Problem C: Traffic Lights

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```

***

## Problem D: Sum of Two Values

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```

***

## Problem E: Towers

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```

***

## Problem F: Tasks and Deadlines

**Approach:** \[Explanation]

```cpp theme={null}
// Solution
```