Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(500000)
K = int(input())

ans_list = []
def dfs(A):
    if len(A)!=0 and int("".join(A))<=10**6:
        ans_list.append(int("".join(A)))
    elif len(A)!=0 and int("".join(A))>10**6:
        return
    if len(A)==0:
        for i in range(1, 10, 1):
            A.append(str(i))
            dfs(A)
            A.pop()
        return

    for i in range(0, 10, 1):
        if abs(int(A[-1])-i)<=1:
            A.append(str(i))
            dfs(A)
            A.pop()
    return
dfs([])
ans_list.sort()
print(ans_list[K-1])

Fixed submission:
import sys
sys.setrecursionlimit(500000)
K = int(input())

ans_list = []

def dfs(l):
    if len(l)==1 and l[0]!="0":
        ans_list.append(int("".join(l)))
    if l!=[] and l[0]=="0":
        return
    if l!=[] and int("".join(l))>3234566667:
        return
    for i in ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]:
        l.append(i)
        #ここで絶対値1以下になるものだけdfs
        if len(l)==1:
            dfs(l)
            l.pop()
        elif abs(int(l[len(l)-2])-int(l[len(l)-1]))<=1:
            dfs(l)
            ans_list.append(int("".join(l)))
            l.pop()
        else:
            l.pop()

    return

dfs([])
ans_list.sort()
print(ans_list[K-1])

Buggy python submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(500000)
K = int(input())

ans_list = []
def dfs(A):
    if len(A)!=0 and int("".join(A))<=10**5:
        ans_list.append(int("".join(A)))
    elif len(A)!=0 and int("".join(A))>10**5:
        return
    if len(A)==0:
        for i in range(1, 10, 1):
            A.append(str(i))
            dfs(A)
            A.pop()
        return

    for i in range(0, 10, 1):
        if abs(int(A[-1])-i)<=1:
            A.append(str(i))
            dfs(A)
            A.pop()
    return
dfs([])
ans_list.sort()
print(ans_list[K-1])

Fixed submission:
import sys
sys.setrecursionlimit(500000)
K = int(input())

ans_list = []

def dfs(l):
    if len(l)==1 and l[0]!="0":
        ans_list.append(int("".join(l)))
    if l!=[] and l[0]=="0":
        return
    if l!=[] and int("".join(l))>3234566667:
        return
    for i in ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]:
        l.append(i)
        #ここで絶対値1以下になるものだけdfs
        if len(l)==1:
            dfs(l)
            l.pop()
        elif abs(int(l[len(l)-2])-int(l[len(l)-1]))<=1:
            dfs(l)
            ans_list.append(int("".join(l)))
            l.pop()
        else:
            l.pop()

    return

dfs([])
ans_list.sort()
print(ans_list[K-1])

Buggy python submission (verdict: Runtime Error):
K = int(input())

ans_list = []
def dfs(A):
    if len(A)!=0 and int("".join(A))<=10**5:
        ans_list.append(int("".join(A)))
    elif len(A)!=0 and int("".join(A))>10**5:
        return
    if len(A)==0:
        for i in range(1, 10, 1):
            A.append(str(i))
            dfs(A)
            A.pop()
        return

    for i in range(0, 10, 1):
        if abs(int(A[-1])-i)<=1:
            A.append(str(i))
            dfs(A)
            A.pop()
    return
dfs([])
ans_list.sort()
print(ans_list[K-1])

Fixed submission:
import sys
sys.setrecursionlimit(500000)
K = int(input())

ans_list = []

def dfs(l):
    if len(l)==1 and l[0]!="0":
        ans_list.append(int("".join(l)))
    if l!=[] and l[0]=="0":
        return
    if l!=[] and int("".join(l))>3234566667:
        return
    for i in ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]:
        l.append(i)
        #ここで絶対値1以下になるものだけdfs
        if len(l)==1:
            dfs(l)
            l.pop()
        elif abs(int(l[len(l)-2])-int(l[len(l)-1]))<=1:
            dfs(l)
            ans_list.append(int("".join(l)))
            l.pop()
        else:
            l.pop()

    return

dfs([])
ans_list.sort()
print(ans_list[K-1])