結果
問題 | No.1718 Random Squirrel |
ユーザー | 👑 ygussany |
提出日時 | 2021-10-10 12:01:23 |
言語 | C (gcc 12.3.0) |
結果 |
AC
|
実行時間 | 57 ms / 2,000 ms |
コード長 | 2,554 bytes |
コンパイル時間 | 256 ms |
コンパイル使用メモリ | 31,616 KB |
実行使用メモリ | 22,136 KB |
最終ジャッジ日時 | 2024-09-23 03:52:02 |
合計ジャッジ時間 | 2,879 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
(要ログイン)
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 | 3 ms
5,248 KB |
testcase_01 | AC | 3 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 29 ms
6,912 KB |
testcase_12 | AC | 8 ms
5,376 KB |
testcase_13 | AC | 21 ms
5,888 KB |
testcase_14 | AC | 31 ms
7,040 KB |
testcase_15 | AC | 34 ms
6,528 KB |
testcase_16 | AC | 17 ms
5,376 KB |
testcase_17 | AC | 29 ms
6,784 KB |
testcase_18 | AC | 46 ms
7,296 KB |
testcase_19 | AC | 32 ms
6,528 KB |
testcase_20 | AC | 11 ms
5,376 KB |
testcase_21 | AC | 43 ms
7,936 KB |
testcase_22 | AC | 56 ms
7,936 KB |
testcase_23 | AC | 45 ms
7,936 KB |
testcase_24 | AC | 43 ms
8,060 KB |
testcase_25 | AC | 57 ms
8,064 KB |
testcase_26 | AC | 30 ms
8,064 KB |
testcase_27 | AC | 31 ms
8,064 KB |
testcase_28 | AC | 29 ms
8,064 KB |
testcase_29 | AC | 46 ms
22,044 KB |
testcase_30 | AC | 46 ms
22,020 KB |
testcase_31 | AC | 45 ms
22,136 KB |
testcase_32 | AC | 45 ms
22,136 KB |
ソースコード
#include <stdio.h> typedef struct Edge { struct Edge *next; int v; } edge; void chmax(int* a, int b) { if (*a < b) *a = b; } void DFS(edge* adj[], int D[], int u, int par[], int size[], int max_depth[], int ans[]) { int w, max[2] = {0, 0}; edge *p; for (p = adj[u]; p != NULL; p = p->next) { w = p->v; if (max[0] < max_depth[w]) { max[1] = max[0]; max[0] = max_depth[w]; } else if (max[1] < max_depth[w]) max[1] = max_depth[w]; } ans[u] = (size[u] - 1) * 2 - max[0]; int tmp; for (p = adj[u]; p != NULL; p = p->next) { w = p->v; if (w == par[u]) continue; if (max_depth[w] == 0) { size[w] = size[u] + 1; max_depth[w] = max_depth[u] + 1; DFS(adj, D, w, par, size, max_depth, ans); } else if (max_depth[w] == max[0]) { tmp = max_depth[u]; if (max[1] != 0 || D[u] != 0) { size[u] -= size[w]; max_depth[u] = max[1] + 1; } else { size[u] = 0; max_depth[u] = 0; } size[w] += size[u]; if (max_depth[u] > 0) chmax(&(max_depth[w]), max_depth[u] + 1); DFS(adj, D, w, par, size, max_depth, ans); size[w] -= size[u]; if (max[1] != 0 || D[u] != 0) size[u] += size[w]; else size[u] = size[w] + 1; max_depth[u] = tmp; } else { size[u] -= size[w]; size[w] += size[u]; tmp = max_depth[u]; max_depth[u] = max[0] + 1; max_depth[w] = max_depth[u] + 1; DFS(adj, D, w, par, size, max_depth, ans); size[w] -= size[u]; size[u] += size[w]; max_depth[u] = tmp; } } } int main() { int i, N, K, u, w, D[100001] = {}; edge *adj[100001] = {}, e[200001], *p; scanf("%d %d", &N, &K); for (i = 0; i < N - 1; i++) { scanf("%d %d", &u, &w); e[i*2].v = w; e[i*2+1].v = u; e[i*2].next = adj[u]; e[i*2+1].next = adj[w]; adj[u] = &(e[i*2]); adj[w] = &(e[i*2+1]); } for (i = 1; i <= K; i++) { scanf("%d", &u); D[u] = 1; } int par[100001] = {}, q[100001], head, tail; par[1] = 1; q[0] = 1; for (head = 0, tail = 1; head < tail; head++) { u = q[head]; for (p = adj[u]; p != NULL; p = p->next) { w = p->v; if (par[w] == 0) { par[w] = u; q[tail++] = w; } } } int size[100001] = {}, max_depth[100001] = {}; for (head--; head >= 0; head--) { u = q[head]; if (size[u] == 0) size[u] += D[u]; else size[u]++; if (u != 1) size[par[u]] += size[u]; if (size[u] != 0) { chmax(&(max_depth[u]), 1); if (u != 1) chmax(&(max_depth[par[u]]), max_depth[u] + 1); } } int ans[100001]; DFS(adj, D, 1, par, size, max_depth, ans); for (u = 1; u <= N; u++) printf("%d\n", ans[u]); fflush(stdout); return 0; }