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 451 ms
コンパイル使用メモリ 87,088 KB
実行使用メモリ 137,636 KB
最終ジャッジ日時 2023-09-20 13:48:51
合計ジャッジ時間 10,632 ms
ジャッジサーバーID
(参考情報)
judge11 / judge15
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 142 ms
78,268 KB
testcase_01 AC 144 ms
78,312 KB
testcase_02 AC 142 ms
78,092 KB
testcase_03 WA -
testcase_04 WA -
testcase_05 AC 142 ms
78,248 KB
testcase_06 AC 143 ms
78,288 KB
testcase_07 AC 144 ms
78,016 KB
testcase_08 AC 144 ms
78,064 KB
testcase_09 AC 142 ms
78,156 KB
testcase_10 AC 141 ms
78,224 KB
testcase_11 AC 144 ms
78,056 KB
testcase_12 AC 143 ms
77,992 KB
testcase_13 AC 143 ms
78,024 KB
testcase_14 AC 142 ms
78,012 KB
testcase_15 AC 142 ms
78,232 KB
testcase_16 AC 143 ms
78,380 KB
testcase_17 AC 143 ms
78,416 KB
testcase_18 AC 142 ms
78,168 KB
testcase_19 AC 426 ms
137,248 KB
testcase_20 AC 375 ms
106,456 KB
testcase_21 AC 366 ms
106,144 KB
testcase_22 WA -
testcase_23 AC 409 ms
137,404 KB
testcase_24 AC 384 ms
137,632 KB
testcase_25 AC 197 ms
79,628 KB
testcase_26 AC 199 ms
80,108 KB
testcase_27 AC 201 ms
80,016 KB
testcase_28 AC 201 ms
79,996 KB
testcase_29 AC 198 ms
80,044 KB
testcase_30 AC 362 ms
107,152 KB
testcase_31 AC 362 ms
107,308 KB
testcase_32 AC 328 ms
93,796 KB
testcase_33 WA -
testcase_34 WA -
testcase_35 AC 333 ms
121,376 KB
testcase_36 AC 283 ms
107,372 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