結果
問題 | No.3031 曲面の向き付け |
ユーザー |
|
提出日時 | 2025-02-21 23:44:40 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,252 bytes |
コンパイル時間 | 376 ms |
コンパイル使用メモリ | 82,392 KB |
実行使用メモリ | 231,524 KB |
最終ジャッジ日時 | 2025-02-21 23:44:58 |
合計ジャッジ時間 | 15,224 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 27 WA * 2 |
ソースコード
from sys import stdin,setrecursionlimit#,set_int_max_str_digits#import pypyjit#pypyjit.set_param('max_unroll_recursion=-1')setrecursionlimit(20000000) # これこどふぉだと無理#set_int_max_str_digits(200010)mod = 998244353ii = lambda :int(stdin.readline())mi = lambda :map(int,stdin.readline().split())li = lambda :list(mi())gmi = lambda :map(lambda x: int(x) - 1, stdin.readline().split())gi = lambda :list(map(lambda x: 0 if x == "." else 1,input())) # グリッド入力受け取りpy = lambda :print("Yes")pn = lambda :print("No")pf = lambda :print("First")ps = lambda :print("Second")vec = [(1,0),(-1,0),(0,-1),(0,1)]vec1 = [(1,0),(1,1),(0,1),(-1,1),(-1,0),(-1,-1),(0,-1),(1,-1)] #8方向inf = 10**18n = ii()from collections import defaultdictdata = [li() for _ in range(n)]cnt = defaultdict(int)g = defaultdict(list)for i in range(n):a,b,c = data[i]cnt[a,b] += 1cnt[b,c] += 1cnt[a,c] += 1g[a,b].append(i)g[b,c].append(i)g[a,c].append(i)for i in cnt:if cnt[i] > 2:print("NO")exit()muki = defaultdict(int)seen = [0]*nfor i in range(n):if seen[i]:continueseen[i] = 1st = [i]while st:v = st.pop()a,b,c = data[v]flag = 0if (a,b) in muki:flag = muki[a,b]if (b,c) in muki:if flag and flag != muki[b,c]:print("NO")exit()flag = muki[b,c]if (a,c) in muki:if flag and flag != -muki[a,c]:print("NO")exit()flag = -muki[a,c]if flag == 0:flag = 1muki[a,b] = flagmuki[b,c] = flagmuki[a,c] = -flagfor u in g[a,b]:if seen[u] == 0:st.append(u)seen[u] = 1for u in g[b,c]:if seen[u] == 0:st.append(u)seen[u] = 1for u in g[a,c]:if seen[u] == 0:st.append(u)seen[u] = 1for v in range(n):a,b,c = data[v]if muki[a,b] == muki[b,c] == -muki[a,c]:continueprint("NO")print("YES")