[Python][DFS]최장경로 

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def recur():
    global n
    if len(candidate) == n:
        l = candidate[:]
        result.append(l)
    else:
        for i in [0, 1]:
            candidate.append(i)
            recur()
            candidate.pop()

def sol():
    global n, k, answer
    for i in range(1 << n):
        tmp = 0
        for j in range(n):
            if i & (1 << j):
                tmp += a[j]
                print(a[j], end=" ")
        print()
        if tmp == k:
            answer += 1

def convert():
    global n
    for i in result:
        tmp = []
        for j in range(n):
            c = a[j] * i[j]
            tmp.append(c)
        aa.append(tmp)

for t in range(int(input())):
    n, k = map(int, input().split())
    a = list(map(int, input().split()))
    aa = list()
    result = []
    candidate = []


    answer = 0
    recur()
    tt = []
    for i in result:
        tmp = 0
        for j in range(n):
            if i[j] == 1:
                tmp += a[j]
        if tmp == k:
            tt.append(i)
            answer += 1
    print(tt)
    print("#{} {}".format(t+1, answer))

    print('-' * 50)
    answer = 0
    convert()
    print(aa)
    for i in aa:
        if sum(i) == k:
            answer += 1
    print("#{} {}".format(t + 1, answer))




    print('-'*50)
    answer = 0
    sol()
    print("#{} {}".format(t+1, answer))

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 direction = (( - 1 , 0 ), ( 1 , 0 ), ( 0 , - 1 ), ( 0 , 1 )) def sol (st_y, st_x): global w, h cnt = 0 for d in direction: next_y = st_y + d[ 0 ] next_x = st_x + d[ 1 ] if next_y < 0 or next_y >= h or next_x < 0 or next_x >= w or MAP[next_y][next_x] == 0 : cnt += 1 return cnt while True: w, h = map(int, input() . split()) if (w, h) == ( 0 , 0 ): break MAP = [list(map(int, input() . split())) for _ in range(h)] answer = 0 for i in range(h): for j in range(w): if MAP[i][j] == 0 : continue answer += sol(i,j) print (answer) 아이디어는 단순하다. 모든 좌표를 순회하면서 주변이 땅으로 연결되지 않을때 cnt를 하나씩 증가시킨다.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 def recur (idx): check[idx] = 1 tmp . append(n[idx]) if len(tmp) == 3 : a = sorted(tmp) if sum(a) not in result: result . append(sum(a)) else : for i in range( 7 ): if check[i] == 0 : recur(i) tmp . pop() check[i] = 0 # def subset(): # for i in range(1<<7): # tmp2 = 0 # cnt = 0 # for j in range(7): # if i & (1<<j): # tmp2 += n[j] # cnt += 1 # if tmp2 not in result and cnt == 3: # result.append(tmp2) for t in range(int(input())): n = list(map(int, input() . split())) result = [] for i in range(len(n)): tmp = [] check = [ 0 ] * 7 recur(i) # subset() res...
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