[BaekJoon] 1074๋ฒˆ Z

2022. 4. 13. 21:36ยท๐Ÿ’ฏ CodingTest/BaekJoon

โ–ถ ๋ฌธ์ œ 

 

๋”๋ณด๊ธฐ

https://www.acmicpc.net/problem/1074

 

โ–ถ ์ฝ”๋“œ

 

N, r, c = map(int, input().split())

l = 2 ** N

def recursiveZ (x, y, l, startIndex):
    global answer, r, c
    if l == 2:
        if (x,y) == (r,c):
            answer = startIndex
        elif (x,y+1) == (r,c): 
            answer = startIndex + 1
        elif (x+1,y) == (r,c): 
            answer = startIndex + 2
        elif (x+1,y+1) == (r,c): 
            answer = startIndex + 3 

    elif l > 2 :
        dividedL = l // 2        
        if r < dividedL and c < dividedL:
            recursiveZ(x ,y, dividedL, startIndex)
        elif r < dividedL and c >= dividedL:
            c -= dividedL
            recursiveZ(x ,y,dividedL, startIndex+(dividedL**2))
        elif r >= dividedL and c < dividedL:
            r -= dividedL
            recursiveZ(x, y,dividedL, startIndex + (dividedL**2) * 2)
        elif r >= dividedL and c >= dividedL:
            r -= dividedL
            c -= dividedL
            recursiveZ(x, y,dividedL, startIndex+ (dividedL**2) * 3)

answer = 0

recursiveZ(0,0,l,0)

print(answer)

 

โ–ถ ๋ฌธ์ œ ํ’€์ด

 

1. ์ดˆ๊ธฐ ์ „์ฒด ํฌ๊ธฐ์—์„œ 2 × 2 ํฌ๊ธฐ์˜ ๋ฐฐ์—ด์ด ๋ ๋•Œ๊นŒ์ง€ ํƒ์ƒ‰ํ•˜๋Š” ์žฌ๊ท€๋ฅผ ์ƒ๊ฐ

2. ํ•œ๋ณ€์˜ ๊ธธ์ด l ์ด 2 ์ผ ๊ฒฝ์šฐ ์ขŒํ‘œ๋ฅผ ๋น„๊ตํ•ด r,c ์™€ ๊ฐ™๋‹ค๋ฉด ๊ฐ ๊ฒฝ์šฐ์— ๋งž๋Š” index๋ฅผ ๋ฐ˜ํ™˜

3. l ์ด 2๋ณด๋‹ค ํฐ ๊ฒฝ์šฐ ๊ฐ๊ฐ 1, 2, 3, 4 ๋ถ„๋ฉด์— ๋Œ€ํ•ด (r, c) ์˜ ์ขŒํ‘œ ๊ฐ’์„ 0, 0 ์œผ๋กœ ๋ณ€ํ™˜ํ•ด์ฃผ๋ฉด index ๊ฐ’์„ ๋”ํ•ด์ฃผ๋Š” ๋ฐฉ์‹์œผ๋กœ ์žฌ๊ท€๋ฅผ ์ง„ํ–‰ => ๊ฐ ์‚ฌ๋ถ„๋ฉด ๋งˆ๋‹ค์˜ ํŠน์„ฑ์— ๋งž๊ฒŒ ๊ตฌํ˜„

4. ์žฌ๊ท€ํ•จ์ˆ˜ ํ˜ธ์ถœ ๋ฐ ์ถœ๋ ฅ

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