結果

問題 No.2290 UnUnion Find
ユーザー buey_tbuey_t
提出日時 2023-05-08 13:09:42
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 659 ms / 2,000 ms
コード長 2,671 bytes
コンパイル時間 295 ms
コンパイル使用メモリ 82,432 KB
実行使用メモリ 102,912 KB
最終ジャッジ日時 2024-05-04 00:35:20
合計ジャッジ時間 26,251 ms
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 160 ms
89,184 KB
testcase_01 AC 159 ms
89,216 KB
testcase_02 AC 234 ms
90,112 KB
testcase_03 AC 298 ms
95,488 KB
testcase_04 AC 321 ms
95,772 KB
testcase_05 AC 326 ms
95,872 KB
testcase_06 AC 312 ms
98,304 KB
testcase_07 AC 316 ms
95,616 KB
testcase_08 AC 307 ms
95,616 KB
testcase_09 AC 305 ms
98,304 KB
testcase_10 AC 310 ms
98,176 KB
testcase_11 AC 306 ms
95,616 KB
testcase_12 AC 314 ms
95,872 KB
testcase_13 AC 316 ms
98,048 KB
testcase_14 AC 317 ms
95,744 KB
testcase_15 AC 324 ms
95,744 KB
testcase_16 AC 322 ms
95,488 KB
testcase_17 AC 320 ms
95,488 KB
testcase_18 AC 330 ms
95,872 KB
testcase_19 AC 646 ms
98,176 KB
testcase_20 AC 543 ms
95,360 KB
testcase_21 AC 418 ms
91,976 KB
testcase_22 AC 580 ms
96,004 KB
testcase_23 AC 545 ms
95,200 KB
testcase_24 AC 577 ms
102,912 KB
testcase_25 AC 453 ms
92,956 KB
testcase_26 AC 423 ms
93,696 KB
testcase_27 AC 483 ms
93,952 KB
testcase_28 AC 567 ms
96,840 KB
testcase_29 AC 546 ms
100,864 KB
testcase_30 AC 472 ms
92,804 KB
testcase_31 AC 565 ms
102,208 KB
testcase_32 AC 483 ms
93,028 KB
testcase_33 AC 528 ms
96,128 KB
testcase_34 AC 436 ms
94,080 KB
testcase_35 AC 555 ms
94,916 KB
testcase_36 AC 514 ms
95,048 KB
testcase_37 AC 602 ms
98,604 KB
testcase_38 AC 515 ms
93,324 KB
testcase_39 AC 530 ms
94,888 KB
testcase_40 AC 508 ms
94,364 KB
testcase_41 AC 506 ms
94,492 KB
testcase_42 AC 654 ms
100,540 KB
testcase_43 AC 659 ms
100,828 KB
testcase_44 AC 321 ms
95,488 KB
testcase_45 AC 316 ms
94,080 KB
testcase_46 AC 351 ms
95,104 KB
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 #

from math import sqrt,sin,cos,tan,ceil,radians,floor,gcd,exp,log,log10,log2,factorial,fsum
from heapq import heapify, heappop, heappush
from bisect import bisect_left, bisect_right
from copy import deepcopy
import copy
import random
from random import randrange
from collections import deque,Counter,defaultdict
from itertools import permutations,combinations
from decimal import Decimal,ROUND_HALF_UP
#tmp = Decimal(mid).quantize(Decimal('0'), rounding=ROUND_HALF_UP)
from functools import lru_cache, reduce
#@lru_cache(maxsize=None)
from operator import add,sub,mul,xor,and_,or_,itemgetter
import sys
input = sys.stdin.readline
# .rstrip()
INF = 10**18
mod1 = 10**9+7
mod2 = 998244353

#DecimalならPython
#再帰ならPython!!!!!!!!!!!!!!!!!!!!!!!!!!

class UnionFind():
    def __init__(self, n):
        self.n = n
        self.parents = [-1] * n
        #親だけ
        self.edge = [0]*n
        self.count = n

    def find(self, x):
        if self.parents[x] < 0:
            return x
        else:
            self.parents[x] = self.find(self.parents[x])
            return self.parents[x]

    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)

        if self.parents[x] > self.parents[y]:
            x, y = y, x
        
        self.edge[x] += 1
        
        if x == y:
            return
        
        self.count -= 1

        self.parents[x] += self.parents[y]
        self.edge[x] += self.edge[y]
        self.parents[y] = x

    def size(self, x):
        return -self.parents[self.find(x)]

    def same(self, x, y):
        return self.find(x) == self.find(y)

    def members(self, x):
        root = self.find(x)
        return [i for i in range(self.n) if self.find(i) == root]

    def roots(self):
        return [i for i, x in enumerate(self.parents) if x < 0]

    def all_group_members(self):
        group_members = defaultdict(list)
        for member in range(self.n):
            group_members[self.find(member)].append(member)
        return group_members

    def __str__(self):
        return '\n'.join(f'{r}: {m}' for r, m in self.all_group_members().items())

'''



'''

N,Q = map(int, input().split())

uf = UnionFind(N+1)

l = 1
r = N

for i in range(Q):
    tmp = list(map(int, input().split()))
    
    if tmp[0] == 1:
        t,u,v = tmp
        
        uf.union(u,v)
        while uf.find(l) != l:
            l += 1
        while uf.find(r) != r:
            r -= 1
        
    else:
        t,v = tmp
        
        if l == r:
            print(-1)
        else:
            if uf.same(r,v):
                print(l)
            else:
                print(r)

























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