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paizaラーニング レベルアップ問題集 paizaの森練習問題コンテスト過去問題6 JavaScript 採点

Posted at

採点 (paizaランク C 相当)

ワンライナーで解いてみました。

const fs = require("fs");
const input = fs.readFileSync("/dev/stdin", "utf-8").trim();
const lines = input.split("\n");

console.log(lines.slice(1).reduce((a, m) => 
  a += m === "correct" ? 2 : (m === "incorrect" ? -1 : 0), 0)
);
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