結果

問題 No.1605 Matrix Shape
ユーザー kyaneko999kyaneko999
提出日時 2021-07-16 21:59:24
言語 PyPy3
(7.3.15)
結果
WA  
実行時間 -
コード長 3,645 bytes
コンパイル時間 256 ms
コンパイル使用メモリ 82,560 KB
実行使用メモリ 129,984 KB
最終ジャッジ日時 2024-07-06 09:09:27
合計ジャッジ時間 6,343 ms
ジャッジサーバーID
(参考情報)
judge5 / 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 61 ms
64,384 KB
testcase_01 AC 58 ms
64,384 KB
testcase_02 AC 58 ms
64,384 KB
testcase_03 AC 60 ms
64,896 KB
testcase_04 WA -
testcase_05 AC 53 ms
64,640 KB
testcase_06 AC 54 ms
64,384 KB
testcase_07 AC 53 ms
64,640 KB
testcase_08 AC 52 ms
64,640 KB
testcase_09 AC 51 ms
64,892 KB
testcase_10 AC 52 ms
64,896 KB
testcase_11 AC 50 ms
64,640 KB
testcase_12 AC 50 ms
65,152 KB
testcase_13 AC 51 ms
65,152 KB
testcase_14 AC 50 ms
64,768 KB
testcase_15 AC 51 ms
64,512 KB
testcase_16 AC 59 ms
64,384 KB
testcase_17 AC 54 ms
64,512 KB
testcase_18 AC 54 ms
64,512 KB
testcase_19 AC 247 ms
129,984 KB
testcase_20 AC 229 ms
102,420 KB
testcase_21 AC 230 ms
102,656 KB
testcase_22 WA -
testcase_23 AC 249 ms
129,808 KB
testcase_24 AC 246 ms
129,600 KB
testcase_25 AC 111 ms
77,888 KB
testcase_26 AC 113 ms
78,184 KB
testcase_27 AC 111 ms
77,696 KB
testcase_28 AC 111 ms
77,696 KB
testcase_29 AC 111 ms
78,208 KB
testcase_30 AC 232 ms
104,832 KB
testcase_31 AC 231 ms
105,020 KB
testcase_32 AC 199 ms
92,672 KB
testcase_33 WA -
testcase_34 AC 104 ms
77,844 KB
testcase_35 AC 202 ms
119,808 KB
testcase_36 AC 157 ms
107,196 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
    else:
        gomi.add(h)
    kind.add(h)
if sum(head.values())==0:
    if len(gomi)==1:
        print(1)
    else:
        print(0)
    exit()
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