It's hot, sunny, July day outside. The day when the best rest is relaxing on the beach near a cool reservoir. One blonde named Katya decided to call her best friend, also a blonde, named Varvara.

- Barbara, hello! What are you doing?

- Katya, hello! I just got up recently. Thinking about what to do today.

- I already have an interesting proposal for you. Let's go to the beach, lie on the sand, swim a little.

- Go. I'll be ready in forty minutes.

Both arrived at the beach. We changed our clothes, spread a towel on the sand. Let's go to the water.

- Katya, what kind of water is this, some kind of salty? Fu Fu Fu.

- Wait a bit, I'll bring the sugar right now.

Katya brought a pack of sugar and poured it into the water. Varvara decided to try.

- All the same, salty, well, what is it?

- And what did you think, of course salty, you have to stir it well. Let's flop already!