結果

問題 No.2560 A_1 < A_2 < ... < A_N
ユーザー tipstar0125
提出日時 2023-12-02 14:54:43
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 490 ms / 2,000 ms
コード長 3,271 bytes
コンパイル時間 375 ms
コンパイル使用メモリ 82,048 KB
実行使用メモリ 122,624 KB
最終ジャッジ日時 2024-09-26 17:41:32
合計ジャッジ時間 6,532 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge1
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ファイルパターン 結果
sample AC * 1
other AC * 15
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

from __future__ import annotations
import array
import bisect
import copy
import fractions
import heapq
import itertools
import math
import random
import re
import string
import sys
import time
from collections import defaultdict, deque
from functools import lru_cache
sys.setrecursionlimit(10**6)
def read_int_list():
    return list(map(int, input().split()))
def read_int():
    return int(input())
def read_str_list():
    return list(input().split())
def read_str():
    return input()
def is_prime(n: int) -> bool:
    if n < 2:
        return False
    i = 2
    ok = True
    while i * i <= n:
        if n % i == 0:
            ok = False
        i += 1
    return ok
def eratosthenes(n: int) -> list[bool]:
    is_prime_list = ([False, True] * (n // 2 + 1))[0 : n + 1]
    is_prime_list[1] = False
    is_prime_list[2] = True
    for i in range(3, n + 1, 2):
        if not (is_prime_list[i]):
            continue
        if i * i > n:
            break
        for k in range(i * i, n + 1, i):
            is_prime_list[k] = False
    return is_prime_list
def legendre(n: int, p: int) -> int:
    cnt = 0
    pp = p
    while pp <= n:
        cnt += n // pp
        pp *= p
    return cnt
def prime_factorize(n: int) -> defaultdict[int, int]:
    nn = n
    i = 2
    d: defaultdict[int, int] = defaultdict(int)
    while i * i <= n:
        while nn % i == 0:
            d[i] += 1
            nn //= i
        i += 1
    if nn != 1:
        d[nn] += 1
    return d
def make_divisors(n: int) -> list[int]:
    i = 1
    ret = []
    while i * i <= n:
        if n % i == 0:
            ret.append(i)
            if i != n // i:
                ret.append(n // i)
        i += 1
    ret.sort()
    return ret
def gcd(a: int, b: int) -> int:
    if a == 0:
        return b
    else:
        return gcd(b % a, a)
def lcm(a: int, b: int) -> int:
    return a * b // gcd(a, b)
def ext_gcd(a: int, b: int) -> tuple[int, int, int]:
    if a == 0:
        return (0, 1, b)
    x, y, g = ext_gcd(b % a, a)
    return (y - b // a * x, x, g)
class UnionFind:
    def __init__(self, n):
        self.parent = [-1] * n
        self.size = n
    def find(self, x):
        if self.parent[x] < 0:
            return x
        else:
            self.parent[x] = self.find(self.parent[x])
            return self.parent[x]
    def merge(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x != y:
            if self.parent[x] > self.parent[y]:
                x, y = y, x
            self.parent[x] += self.parent[y]
            self.parent[y] = x
            self.size -= 1
            return True
        else:
            return False
    def same(self, x, y):
        return self.find(x) == self.find(y)
    def size(self, x):
        return -self.parent[self.find(x)]
def solve():
    
    t=read_int()
    S=[0]
    for i in range(1,int(3e5)):
        S.append(S[-1]+i)
    for _ in range(t):
        N,X=read_int_list()
        if S[N-1]>=X or X-S[N-1]<=N-1:
            print(-1)
            continue
        ans=[]
        for i in range(1,N):
            ans.append(i)
        ans.append(X-S[N-1])
        print(*ans)
    
def main():
    # t = read_int()
    # for _ in range(t):
    solve()
main()
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