๋ฐฑ์ค€_2869: ๋‹ฌํŒฝ์ด๋Š” ์˜ฌ๋ผ๊ฐ€๊ณ  ์‹ถ๋‹ค (node.js/JavaScript)

2024. 7. 16. 18:56ยทbaekjoon

โžก๏ธ ๋ฌธ์ œ: ๋‹ฌํŒฝ์ด๋Š” ์˜ฌ๋ผ๊ฐ€๊ณ  ์‹ถ๋‹ค

 

๐ŸŒฎ  ๊ณผ์ •

๋‹ค์Œ์€ ์ฒ˜์Œ์— ์ œ์ถœํ•œ ์ฝ”๋“œ์ธ๋ฐ, vscode ์ƒ์—์„œ๋Š” ๊ฐ’์„ ์ž˜ ๋„์ถœํ•ด์คฌ์ง€๋งŒ ์ œ์ถœํ•˜๋‹ˆ ์‹œ๊ฐ„ ์ดˆ๊ณผ๊ฐ€ ๋๋‹ค.

let [a, b, v] = require('fs').readFileSync(0).toString().trim().split(' ').map(Number);
let count = 1;
while (v - a > 0) {
    v = v - a + b;
    count++;
}
console.log(count);

 

์ด๋ ‡๊ฒŒ ์ค‘๊ฐ„ ์ฒ˜๋ฆฌ์—†์ด ๋ฐ˜๋ณต๋ฌธ๋งŒ ๋Œ๋ฆฌ๋ฉด ์‹œ๊ฐ„ ๋ณต์žก๋„ ๋•Œ๋ฌธ์— ์‹œ๊ฐ„ ์ดˆ๊ณผ๊ฐ€ ๋‚˜๊ฒŒ ๋œ๋‹คใ…  ๊ทธ๋ž˜์„œ ๊ณ„์‚ฐ์‹์œผ๋กœ ๋‹ค์‹œ ํ’€์—ˆ๋‹ค.

 

[a, b, v] = (์•„์นจ ์ด๋™๋Ÿ‰, ๋ฐค์— ๋ฏธ๋„๋Ÿฌ์ง€๋Š” ๊ฐ’, ๋†’์ด) ์ด๋ผ๊ณ  ์น˜๋ฉด

(๋†’์ด - ๋ฐค์— ๋ฏธ๋„๋Ÿฌ์ง€๋Š” ๊ฐ’) ๊นŒ์ง€๋งŒ ์˜ฌ๋ผ๊ฐ€๋ฉด ๋˜๊ณ , ํ•˜๋ฃจ์น˜ ์ด๋™๋Ÿ‰์€ (์•„์นจ ์ด๋™๋Ÿ‰ - ๋ฐค์— ๋ฏธ๋„๋Ÿฌ์ง€๋Š” ๊ฐ’)์ด๊ฒŒ ๋œ๋‹ค.

 

(๋†’์ด - ๋ฐค์— ๋ฏธ๋„๋Ÿฌ์ง€๋Š” ๊ฐ’)/(ํ•˜๋ฃจ์น˜ ์ด๋™๋Ÿ‰) ํ–ˆ์„ ๋•Œ ๊ฐ’์ด ๋”ฑ ๋–จ์–ด์ง€์ง€ ์•Š๋Š” ๊ฒฝ์šฐ๋ฅผ ์ƒ๊ฐํ•ด์„œ ๋”ฑ ๋–จ์–ด์ง€์ง€ ์•Š์œผ๋ฉด Math.ceil ๋ฉ”์„œ๋“œ๋กœ ์˜ฌ๋ฆผ๋˜์–ด ํ•˜๋ฃจ๋ฅผ ๋”ํ•˜๋„๋ก ํ–ˆ๋‹ค.

 

๐Ÿฆ ์ œ์ถœ

let [a, b, v] = require('fs').readFileSync(0).toString().trim().split(' ').map(Number);

console.log(Math.ceil((v - b) / (a - b)));

 

๐Ÿš— . . . ์•Œ๊ฒŒ ๋œ ์ , ํ’€๋ฉด์„œ ์ƒ๊ฐํ•œ ์ 

 

ํ’€๋ฉด์„œ ์‹œ๊ฐ„ ์ดˆ๊ณผ๋Š” ์ฒ˜์Œ ๋ดค๋Š”๋ฐ, ์–ด๋–ค ์ด์œ ๋กœ ์‹œ๊ฐ„ ์ดˆ๊ณผ๊ฐ€ ๋‚œ ๊ฑด์ง€ ์ƒ๊ฐํ•˜๋ฉด์„œ ๊ธฐ์กด๊ณผ ๋‹ค๋ฅธ ๋ฐฉ๋ฒ•์„ ์ƒ๊ฐํ•ด๋ณด๋Š” ์‹œ๊ฐ„์ด ๋˜์—ˆ๋‹ค.

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๋ฐฑ์ค€_2869: ๋‹ฌํŒฝ์ด๋Š” ์˜ฌ๋ผ๊ฐ€๊ณ  ์‹ถ๋‹ค (node.js/JavaScript)
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