# Task 1. 

Hunter Pulkа received two bags of dog food for his dog Bulka from "AliExpress." In the morning, one bag was found empty. Nosy Nезнайка took up the investigation and identified three suspects, who made the following statements.

Siropchik said that he did not eat the dog food.

Toropyzhka claimed that the food was eaten by either Ponchik or Siropchik.

Ponchik confirmed that Siropchik did not eat the food.

It turned out later that the innocent told the truth, while the guilty one lied. Determine who ate the entire bag of dog food overnight.
# Solution.

Let's consider the three cases one by one, in each of which one of the statements is false.

Case 1. Syropchik is lying.

In this case, Ponchik's statement would also be false, which contradicts the condition.

Case 2. Tropozhka is lying.

This means that neither Ponchik nor Syropchik ate the food. Then they both are telling the truth, which meets the condition.

Case 3. Ponchik is lying.

Then Syropchik's statement is also false, which contradicts the condition.

Thus, only one of the three cases (the second) does not contain a contradiction. Therefore, Tropozhka ate the dog food.

Answer. Tropozhka ate the entire bag of dog food.