結果

問題 No.1605 Matrix Shape
ユーザー kyaneko999kyaneko999
提出日時 2021-07-16 21:57:02
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 3,547 bytes
コンパイル時間 152 ms
コンパイル使用メモリ 82,548 KB
実行使用メモリ 129,892 KB
最終ジャッジ日時 2024-07-06 09:04:29
合計ジャッジ時間 5,841 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
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 49 ms
64,768 KB
testcase_01 AC 54 ms
64,384 KB
testcase_02 AC 50 ms
64,384 KB
testcase_03 WA -
testcase_04 WA -
testcase_05 AC 51 ms
64,640 KB
testcase_06 AC 53 ms
64,384 KB
testcase_07 AC 53 ms
64,384 KB
testcase_08 AC 53 ms
64,640 KB
testcase_09 AC 48 ms
65,152 KB
testcase_10 AC 50 ms
64,512 KB
testcase_11 AC 54 ms
64,384 KB
testcase_12 AC 49 ms
64,384 KB
testcase_13 AC 48 ms
64,768 KB
testcase_14 AC 50 ms
64,384 KB
testcase_15 AC 49 ms
64,640 KB
testcase_16 AC 49 ms
64,512 KB
testcase_17 AC 50 ms
64,640 KB
testcase_18 AC 50 ms
64,768 KB
testcase_19 AC 240 ms
129,856 KB
testcase_20 AC 225 ms
102,448 KB
testcase_21 AC 234 ms
102,236 KB
testcase_22 WA -
testcase_23 AC 255 ms
129,892 KB
testcase_24 AC 238 ms
129,720 KB
testcase_25 AC 104 ms
78,176 KB
testcase_26 AC 103 ms
77,568 KB
testcase_27 AC 105 ms
78,080 KB
testcase_28 AC 106 ms
77,568 KB
testcase_29 AC 105 ms
77,696 KB
testcase_30 AC 238 ms
104,804 KB
testcase_31 AC 241 ms
105,100 KB
testcase_32 AC 204 ms
92,136 KB
testcase_33 WA -
testcase_34 WA -
testcase_35 AC 207 ms
119,424 KB
testcase_36 AC 157 ms
106,704 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 sys import exit, stdin, setrecursionlimit
from collections import deque, defaultdict, Counter
from copy import deepcopy
from bisect import bisect_left, bisect_right, insort_left, insort_right
from heapq import heapify, heappop, heappush
from itertools import product, permutations, combinations, combinations_with_replacement
from functools import reduce
from math import gcd, sin, cos, tan, asin, acos, atan, atan2, degrees, radians, ceil, floor, sqrt, factorial
from math import pi as PI
from random import randint
# from decimal import Decimal

setrecursionlimit(500000)
INF = (1<<61)-1
EPS = 1e-10
MOD = 10**9+7
# MOD = 998244353

def input():
    return stdin.readline()[:-1]
def intput():
    return int(stdin.readline())
def minput():
    return stdin.readline()[:-1].split()
def linput():
    return stdin.readline()[:-1].split()
def mint():
    return map(int,stdin.readline().split())
def lint():
    return list(map(int,stdin.readline().split()))
def ilint():
    return int(stdin.readline()), list(map(int,stdin.readline().split()))
def lcm(x,y):
    return x*y//gcd(x,y)
def lgcd(l):
    return reduce(gcd,l)
def llcm(l):
    return reduce(lcm,l)
def powmod(n,i,mod=MOD):
    return pow(n,mod-1+i,mod) if i<0 else pow(n,i,mod)
def div2(x):
    return x.bit_length()
def div10(x):
    return len(str(x))-(x==0)
def popcount(x):
    return bin(x).count('1')
def digit(x,i,max_len=None):
    s = str(x)
    if max_len:
        i -= max_len-len(s)
    return int(s[i-1]) if i>0 else 0
def digitsum(x):
    ans = 0
    for i in range(div10(x)):
        ans += digit(x,i+1)
    return ans
def pf(x,mode='counter'):
    C = Counter()
    p = 2
    while x>1:
        k = 0
        while x%p==0:
            x //= p
            k += 1
        if k>0:
            C[p] += k
        p = p+2-(p==2) if p*p<x else x
    if mode=='counter':
        return C
    S = set([1])
    for k in C:
        T = set()
        for x in S:
            for i in range(C[k]+1):
                T.add(x*(k**i))
        S = T
    if mode=='set':
        return S
    if mode=='list':
        return sorted(S)
def isprime(x):
    if x<2:
        return False
    return len(pf(x,'set'))==2
def matmul(A, B):
    # import numpy
    A1, A2 = A >> 15, A & (1 << 15) - 1
    B1, B2 = B >> 15, B & (1 << 15) - 1
    X = np.dot(A1, B1) % MOD
    Y = np.dot(A2, B2)
    Z = np.dot(A1 + A2, B1 + B2) - X - Y
    return ((X << 30) + (Z << 15) + Y) % MOD
def matpow(A, N):
    P = np.eye(A.shape[0], dtype=np.int64)
    while N:
        if N & 1:
            P = matmul(P, A)
        A = matmul(A, A)
        N >>= 1
    return P
def zash(S):
    lis = sorted(S)
    dic = {}
    for i,x in enumerate(lis):
        dic[x] = i
    return lis, dic
def pr(*x):
    print(*x, sep='', end='') if len(x) else print()
def lprint(l):
    for x in l: print(x)
def ston(c, c0='a'):
    return ord(c)-ord(c0)
def ntos(x, c0='a'):
    return chr(x+ord(c0))
def judge(x, l=['Yes', 'No']):
    print(l[0] if x else l[1])
def debug(*x, flag=1):
    if flag: print(*x)

######################################################

N=intput()
head=Counter()
tail=Counter()
gomi=set()
kind=set()
for _  in range(N):
    h,w=mint()
    if h!=w:
        head[h]+=1
        tail[w]+=1
        kind.add(h)
    else:
        gomi.add(h)
for v in gomi:
    if head[v]==0 and tail[v]==0:
        print(0)
        exit()
for k in head.keys():
    tmp=min(head[k],tail[k])
    head[k]-=tmp
    tail[k]-=tmp
S=sum(head.values())
if S==0:
    print(len(kind))
elif S==1:
    print(1)
else:
    print(0)
0