[BaekJoon] 18111 ๋งˆ์ธํฌ๋ž˜ํ”„ํŠธ

2022. 4. 11. 21:05ยท๐Ÿ’ฏ CodingTest/BaekJoon

[์ถœ์ฒ˜ : https://www.acmicpc.net/problem/18111]

import sys
n, m, b = map(int,sys.stdin.readline().rstrip().split())

groundHeight = [list(map(int,sys.stdin.readline().rstrip().split())) for i in range(n)]

#numOfH ={i:0 for i in range(257)}
linearGround = []

minH = 256
maxH = 0

for raw in groundHeight :
    if min(raw) < minH:
        minH = min(raw)
    elif max(raw) > maxH:
        maxH = max(raw)     
    for h in raw:
        linearGround.append(h)

linearGround.sort(reverse=True)

result = (-1, -1)

while minH <= maxH :
    totalT = 0
    tempB = b
    flag = True
    for h in linearGround:
        if h > minH or tempB == 0:
            totalT += (h - minH) * 2
            tempB += (h - minH)
        elif h < minH and tempB >= (minH-h):
            totalT += (minH - h)
            tempB -= (minH - h)
        elif h == minH:
            continue
        else : 
            flag = False 
            break    

    if tempB >= 0 and flag:
        if result[0] == -1 :
            result = (totalT, minH)
        elif result[0] > totalT :
            result = (totalT, minH)
        elif result[0] == totalT and result[1] < minH:
            result = (totalT, minH)

    minH += 1

print(result[0], result[1])โ€‹

 

โ–ถ ๋ฌธ์ œํ’€์ด

 

1. ์ดˆ๊ธฐ ์ž…๋ ฅ๋ฐ์ดํ„ฐ๋ฅผ ๋ฐ›์•„ ๊ฐ๊ฐ์˜ ์œ„์น˜๋งˆ๋‹ค์˜ ๋†’์ด ๊ฐ’์„ ์„ ํ˜•๋ฐ์ดํ„ฐ๋กœ ๋ณ€ํ™˜ + ๋†’์ด์˜ ์ตœ๋Œ€๊ฐ’ ์ตœ์†Œ๊ฐ’์„ ๊ตฌํ•จ 

2. ์„ ํ˜•๋ฐ์ดํ„ฐ ์ •๋ ฌ(๋‚ด๋ฆผ์ฐจ์ˆœ)

3. ์ตœ์†Œ ๋†’์ด๋ถ€ํ„ฐ ์ตœ๋Œ€ ๋†’์ด๊นŒ์ง€ ์ˆœํšŒํ•˜๋ฉด์„œ ๊ฐ ๊ฒฝ์šฐ์˜ ์†Œ์š”์‹œ๊ฐ„ ๋ฐ ๋†’์ด๋ฅผ ๊ตฌํ•จ

    3-1) ์ฒซ๋ฒˆ์งธ if๋ฌธ์— ์˜ํ•ด ๋†’์ด(h)๊ฐ€ ํ˜„์žฌ ์ˆœํšŒํ•˜๋Š” ๋†’์ด(minH)๋ณด๋‹ค ํฐ๊ฒฝ์šฐ์— ๋Œ€ํ•ด ์ฒ˜๋ฆฌํ•จ ์ด๋•Œ ๋ธ”๋ก์˜ ๊ฐœ์ˆ˜๋Š” 0์ผ ์ˆ˜ ์žˆ์Œ(๋ธ”๋ก์ด ์—†์œผ๋ฉด ๋ธ”๋ก์„ ํŒŒ๋‚ด์•ผ ํ•˜๋ฏ€๋กœ)

    3-2) ๋‘๋ฒˆ์งธ elif๋ฌธ์— ์˜ํ•ด ๋†’์ด(h)๊ฐ€ ํ˜„์žฌ ์ˆœํšŒํ•˜๋Š” ๋†’์ด(minH)๋ณด๋‹ค ์ž‘์€ ๊ฒฝ์šฐ์— ๋Œ€ํ•ด ์ฒ˜๋ฆฌ ์ด๋•Œ์—๋Š” ํ˜„์žฌ ๊ฐ€์ง„ ๋ธ”๋ก์˜ ์ˆ˜๊ฐ€ ํ•ด๋‹น ๋นˆ์นธ์„ ๋ฉ”์šธ ๋งŒํผ ๊ฐ€์ง€๊ณ  ์žˆ์–ด์•ผํ•จ

    3-3) ์„ธ๋ฒˆ์งธ elif๋ฌธ์—์˜ํ•ด ํ˜„์žฌ ์ˆœํšŒํ•˜๋Š” ๋†’์ด(minH)์™€ ๊ฐ™์€๊ฒฝ์šฐ continue

    3-4) ๋งˆ์ง€๋ง‰ else๋ฌธ์— ์˜ํ•ด ๊ฐ๊ฐ์˜ ๊ฒฝ์šฐ๊ฐ€ ์•„๋‹Œ๊ฒฝ์šฐ์—๋Š” flag๋ฅผ False๋กœ ํ•˜๊ณ  break

4. ๋ฌธ์ œ์— ์กฐ๊ฑด์— ์˜ํ•ด ์‹œ๊ฐ„์ด ์ตœ์†Œํ™”๋˜๋Š” ๊ฒƒ์„ ์šฐ์„ ์œผ๋กœ ํ•˜๋ฉฐ ๋งŒ์ผ ์‹œ๊ฐ„์†Œ์š”๊ฐ€ ๊ฐ™์€ ๊ฒฝ์šฐ ๋†’์ด๊ฐ€ ๋” ๋†’์€ ๊ฒƒ์œผ๋กœ ํ˜„์žฌ ๊ฒฐ๊ณผ๋ฅผ ์ˆ˜์ •ํ•˜๋Š” ์ฝ”๋“œ 

5. ๊ฒฐ๊ณผ ๋ฐ˜ํ™˜

 

โ˜…โ˜…โ˜… ์ดˆ๊ธฐ python3๋กœ ์ฑ„์ ์‹œ ์‹œ๊ฐ„์ดˆ๊ณผ ์˜ค๋ฅ˜๊ฐ€ ๋ฐœ์ƒ

=> ํ™•์ธ๊ฒฐ๊ณผ pypy ์™€ python3 ๊ฐ€ ๊ฐ๊ฐ ์‚ฌ์šฉํ•˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋‹ค๋ฅด๊ณ  ํ•ด๋‹น ๋ฌธ์ œ์˜ ๊ฒฝ์šฐ ๋ฉ”๋ชจ๋ฆฌ ์ œํ•œ์ด ๊ต‰์žฅํžˆ ๋„๋„ํ•œ ํŽธ์ด์˜€๊ธฐ์— pypy๋ฅผ ํ†ตํ•ด ๋ฌธ์ œํ•ด๊ฒฐ์„ ํ•  ์ˆ˜ ์žˆ์—ˆ์Œ 

[pypy vs python ์ฐธ๊ณ ์‚ฌ์ดํŠธ]

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