結果
問題 | No.827 総神童数 |
ユーザー | dot_haraai |
提出日時 | 2021-06-20 02:49:50 |
言語 | Nim (2.0.2) |
結果 |
AC
|
実行時間 | 191 ms / 2,000 ms |
コード長 | 1,488 bytes |
コンパイル時間 | 3,629 ms |
コンパイル使用メモリ | 86,644 KB |
実行使用メモリ | 28,288 KB |
最終ジャッジ日時 | 2024-06-22 22:24:19 |
合計ジャッジ時間 | 9,161 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 191 ms
28,288 KB |
testcase_10 | AC | 65 ms
10,752 KB |
testcase_11 | AC | 4 ms
5,376 KB |
testcase_12 | AC | 28 ms
6,912 KB |
testcase_13 | AC | 156 ms
24,064 KB |
testcase_14 | AC | 6 ms
5,376 KB |
testcase_15 | AC | 60 ms
11,264 KB |
testcase_16 | AC | 150 ms
18,688 KB |
testcase_17 | AC | 177 ms
22,636 KB |
testcase_18 | AC | 76 ms
13,056 KB |
testcase_19 | AC | 176 ms
13,468 KB |
testcase_20 | AC | 128 ms
10,752 KB |
testcase_21 | AC | 92 ms
8,704 KB |
testcase_22 | AC | 138 ms
11,520 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 155 ms
12,288 KB |
testcase_25 | AC | 120 ms
10,112 KB |
testcase_26 | AC | 157 ms
12,416 KB |
testcase_27 | AC | 99 ms
9,344 KB |
testcase_28 | AC | 100 ms
9,344 KB |
testcase_29 | AC | 77 ms
7,936 KB |
testcase_30 | AC | 23 ms
5,376 KB |
testcase_31 | AC | 59 ms
6,912 KB |
testcase_32 | AC | 60 ms
6,784 KB |
testcase_33 | AC | 170 ms
13,184 KB |
testcase_34 | AC | 161 ms
12,396 KB |
testcase_35 | AC | 63 ms
6,912 KB |
testcase_36 | AC | 87 ms
8,576 KB |
testcase_37 | AC | 115 ms
10,112 KB |
testcase_38 | AC | 168 ms
13,100 KB |
コンパイルメッセージ
/home/judge/data/code/Main.nim(2, 18) Warning: Use the new 'sugar' module instead; future is deprecated [Deprecated] /home/judge/data/code/Main.nim(1, 8) Warning: imported and not used: 'times' [UnusedImport] /home/judge/data/code/Main.nim(2, 26) Warning: imported and not used: 'strformat' [UnusedImport] /home/judge/data/code/Main.nim(2, 18) Warning: imported and not used: 'future' [UnusedImport] /home/judge/data/code/Main.nim(2, 37) Warning: imported and not used: 'deques' [UnusedImport] /home/judge/data/code/Main.nim(1, 41) Warning: imported and not used: 'algorithm' [UnusedImport] /home/judge/data/code/Main.nim(1, 52) Warning: imported and not used: 'tables' [UnusedImport] /home/judge/data/code/Main.nim(1, 60) Warning: imported and not used: 'sets' [UnusedImport] /home/judge/data/code/Main.nim(1, 66) Warning: imported and not used: 'lists' [UnusedImport] /home/judge/data/code/Main.nim(1, 73) Warning: imported and not used: 'intsets' [UnusedImport] /home/judge/data/code/Main.nim(2, 8) Warning: imported and not used: 'critbits' [UnusedImport]
ソースコード
import times, strutils, sequtils, math, algorithm, tables, sets, lists, intsets import critbits, future, strformat, deques template `max=`(x,y) = x = max(x,y) template `min=`(x,y) = x = min(x,y) template `mod=`(x,y) = x = x mod y template scan2 = (scan(), scan()) template scan3 = (scan(), scan()) let read* = iterator: string {.closure.} = while true: (for s in stdin.readLine.split: yield s) proc scan(): int = read().parseInt proc scanf(): float = read().parseFloat proc toInt(c:char): int = return int(c) - int('0') # 拡張ユークリッド互除法 proc xgcd(a,b:int):(int,int,int)= var b = b x0=1 y0=0 x1=0 y1=1 q:int a = a while b!=0: (q,a,b) = (a.div(b),b,a.mod(b)) (x0,x1)=(x1,x0-q*x1) (y0,y1)=(y1,y0-q*y1) return (a,x0,y0) # modの逆元 proc modinv(a,m:int):int= var (g,x,y)=xgcd(a,m) if g!=1: return -1 else: return x mod m proc solve()= var n = scan() es = newseqwith(n,newseq[int]()) md = 10^9+7 depth = newseqwith(n,0) factn = 1 for i in 1..n: factn*=i factn.mod=md for i in 0..<n-1: var u = scan()-1 v = scan()-1 es[u].add(v) es[v].add(u) proc dfs(p,par,dpt:int)= depth[p]=dpt for nxt in es[p]: if nxt==par:continue dfs(nxt,p,dpt+1) dfs(0,-1,1) var result = 0 #echo depth for i in 0..<n: result+=(factn*modinv(depth[i],md)).mod(md) result = ((result mod md)+md).mod(md) echo result solve()