136. Math Team

Codeforces

IDCF10269136

Time1000ms

Memory256MB

Difficulty—

English · Original

Formal · Original

You're competing in a large individual math team contest. In the contest, you're given several sets of problems, and for each one of them you get a certain number of them correct. Given this information, you want to figure out your total score in the competition. For example, if you scored a 2 out of 3 on the first problem set, and a 3 out of 5 on the second problem set, your total score would be 5 out of 8. The first line of input contains a single positive integer $n$: the number of problem sets. The next $n$ lines contain two integers separated by a slash "/": the number of questions you got right in the problem set, and the total number of questions in the problem set. Output two slash-separated integers: the total number of questions you got right, and the total number of question you got wrong, respectively. ## Input The first line of input contains a single positive integer $n$: the number of problem sets.The next $n$ lines contain two integers separated by a slash "/": the number of questions you got right in the problem set, and the total number of questions in the problem set. ## Output Output two slash-separated integers: the total number of questions you got right, and the total number of question you got wrong, respectively. [samples]

**Definitions** Let $ n \in \mathbb{Z}^+ $ be the number of problem sets. For each $ i \in \{1, \dots, n\} $, let $ r_i \in \mathbb{Z} $ be the number of correct answers and $ t_i \in \mathbb{Z} $ be the total number of questions in problem set $ i $. **Constraints** 1. $ n \geq 1 $ 2. For each $ i \in \{1, \dots, n\} $: $ 0 \leq r_i \leq t_i $ **Objective** Compute: - Total correct: $ R = \sum_{i=1}^{n} r_i $ - Total wrong: $ W = \sum_{i=1}^{n} (t_i - r_i) $ Output: $ R / W $

API Response (JSON)

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Full JSON Raw Segments