CCC计算机竞赛真题-2023

Problem J1: Deliv-e-droid

Problem Description

In the game, Deliv-e-droid, a robot droid has to deliver packages while avoiding obstacles.

At the end of the game, the final score is calculated based on the following point system:

• Gain 50 points for every package delivered.

• Lose 10 points for every collision with an obstacle.

• Earn a bonus 500 points if the number of packages delivered is greater than the number

of collisions with obstacles.

Your job is to determine the final score at the end of a game.

Sample Input 1

5

2

Output for Sample Input 1

730

Explanation of Output for Sample Input 1

There are 5 packages delivered, so 5 × 50 = 250 points are gained. There are 2 collisions, so

2 × 10 = 20 points are lost. Since 5 > 2, a bonus 500 points are earned. Therefore, the final

score is 250 − 20 + 500 = 730.

Sample Input 2

10 × 10 = 100 points are lost. Since 0 ≤ 10, no bonus points are earned. Therefore, the final

score is 0 − 100 + 0 = −100.

La version fran¸caise figure `a la suite de la version anglaise.