1. The sports reporter who witnessed the finish of the $100 \mathrm{~m}$ race. From the five spectators present, he gathered the following data:

Alexander: Senko was second, and Ognyan was third.

Blaze: the runner was third, and Toma was fifth.

Vasko: Toma was first, and Petar was second.

Gorjan: Senko was second, and Rade was fourth.

Dragan: Ognyan was first, and Rade was fourth.

The reporter knew that the spectators were too enthusiastic and asked his colleague for the results. However, the colleague only reminded him that each spectator had given one correct answer and one incorrect placement of the competitors. Help the reporter to compile his report and determine the final order of the competitors in the race.
Solution. For each of the competitors and spectators, we use only the first letter of their name as an abbreviation.

Let's assume that S is indeed second. Then, according to the statement of $\Gamma$, P is not fourth. Now, according to the statement of V, it follows that P is second. However, this contradicts the assumption that S is second. Therefore, it is not possible for S to be second.

Given the previous conclusion and the statements of A and G, we get that O is third and R is fourth. Since O is third, according to the statement of B, we get that T is fifth. Now, since T is fifth, according to the statement of V, we get that P is second. Finally, it remains that S won the race.

Thus, the final order is: S, P, O, R, T