結果
問題 | No.2115 Making Forest Easy |
ユーザー | ygussany |
提出日時 | 2022-10-29 00:47:30 |
言語 | C (gcc 12.3.0) |
結果 |
AC
|
実行時間 | 1,529 ms / 2,000 ms |
コード長 | 2,723 bytes |
コンパイル時間 | 1,122 ms |
コンパイル使用メモリ | 34,176 KB |
実行使用メモリ | 119,480 KB |
最終ジャッジ日時 | 2024-07-06 03:51:37 |
合計ジャッジ時間 | 27,443 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 1 ms
6,816 KB |
testcase_01 | AC | 1 ms
6,940 KB |
testcase_02 | AC | 1,489 ms
119,208 KB |
testcase_03 | AC | 348 ms
119,364 KB |
testcase_04 | AC | 1,121 ms
119,092 KB |
testcase_05 | AC | 808 ms
102,016 KB |
testcase_06 | AC | 1,495 ms
119,160 KB |
testcase_07 | AC | 322 ms
119,212 KB |
testcase_08 | AC | 1,529 ms
119,220 KB |
testcase_09 | AC | 258 ms
119,436 KB |
testcase_10 | AC | 1,478 ms
119,428 KB |
testcase_11 | AC | 242 ms
119,248 KB |
testcase_12 | AC | 253 ms
119,480 KB |
testcase_13 | AC | 166 ms
107,500 KB |
testcase_14 | AC | 262 ms
119,264 KB |
testcase_15 | AC | 326 ms
119,404 KB |
testcase_16 | AC | 235 ms
119,348 KB |
testcase_17 | AC | 15 ms
14,316 KB |
testcase_18 | AC | 239 ms
21,912 KB |
testcase_19 | AC | 747 ms
67,316 KB |
testcase_20 | AC | 271 ms
99,024 KB |
testcase_21 | AC | 74 ms
11,464 KB |
testcase_22 | AC | 56 ms
26,540 KB |
testcase_23 | AC | 973 ms
92,392 KB |
testcase_24 | AC | 247 ms
119,252 KB |
testcase_25 | AC | 364 ms
54,052 KB |
testcase_26 | AC | 252 ms
119,244 KB |
testcase_27 | AC | 143 ms
66,136 KB |
testcase_28 | AC | 303 ms
119,216 KB |
testcase_29 | AC | 150 ms
16,548 KB |
testcase_30 | AC | 335 ms
119,392 KB |
testcase_31 | AC | 1,099 ms
119,068 KB |
testcase_32 | AC | 1,520 ms
119,320 KB |
testcase_33 | AC | 1,499 ms
119,144 KB |
testcase_34 | AC | 23 ms
17,144 KB |
testcase_35 | AC | 317 ms
29,308 KB |
testcase_36 | AC | 1,513 ms
119,184 KB |
testcase_37 | AC | 122 ms
62,620 KB |
testcase_38 | AC | 46 ms
34,616 KB |
testcase_39 | AC | 596 ms
51,020 KB |
testcase_40 | AC | 304 ms
119,300 KB |
testcase_41 | AC | 247 ms
119,268 KB |
testcase_42 | AC | 212 ms
119,260 KB |
testcase_43 | AC | 145 ms
56,540 KB |
testcase_44 | AC | 46 ms
34,384 KB |
testcase_45 | AC | 249 ms
91,620 KB |
testcase_46 | AC | 177 ms
119,060 KB |
testcase_47 | AC | 130 ms
49,860 KB |
testcase_48 | AC | 1,033 ms
119,248 KB |
testcase_49 | AC | 1,143 ms
119,324 KB |
testcase_50 | AC | 127 ms
74,796 KB |
testcase_51 | AC | 97 ms
50,104 KB |
ソースコード
#include <stdio.h> const int Mod = 998244353; typedef struct Edge { struct Edge *next; int v, id; long long dp[1001]; } edge; long long div_mod(long long x, long long y, long long z) { if (x % y == 0) return x / y; else return (div_mod((1 + x / y) * y - x, (z % y), y) * z + x) / y; } int main() { int i, N, M, u, w, A[5001]; edge *adj[5001] = {}, e[10001], *p; scanf("%d", &N); for (u = 1; u <= N; u++) scanf("%d", &(A[u])); 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].id = i * 2; e[i*2+1].id = i * 2 + 1; e[i*2].next = adj[u]; e[i*2+1].next = adj[w]; adj[u] = &(e[i*2]); adj[w] = &(e[i*2+1]); } int par[5001] = {}, pred[5001], q[5001], head, tail; q[0] = 1; par[1] = 1; pred[1] = -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; pred[w] = p->id; q[tail++] = w; } } } int k; long long sum; for (head--; head >= 1; head--) { u = q[head]; i = pred[u]; if (adj[u]->next == NULL) { for (k = 0; k < A[u]; k++) e[i].dp[k] = 1; for (k = A[u]; k <= 1000; k++) e[i].dp[k] = 2; continue; } for (p = adj[u], sum = 1; p != NULL; p = p->next) { if (p->v == par[u]) continue; sum = sum * p->dp[1000] % Mod; } e[i].dp[0] = sum; for (k = 1; k < A[u]; k++) e[i].dp[k] = e[i].dp[0]; for (k = A[u]; k <= 1000; k++) { for (p = adj[u], sum = 1; p != NULL; p = p->next) { if (p->v == par[u]) continue; sum = sum * p->dp[k] % Mod; } e[i].dp[k] = (e[i].dp[0] + sum) % Mod; } } long long ans = 0; static long long prod[5001][1001]; for (k = 0; k <= 1000; k++) { for (p = adj[1], prod[1][k] = 1; p != NULL; p = p->next) prod[1][k] = prod[1][k] * p->dp[k] % Mod; if (k > 0) ans += (prod[1][k] - prod[1][k-1] + Mod) * ((k >= A[1])? k: A[1]) % Mod; } ans += prod[1][0] * A[1] % Mod; for (head = 1; head < tail; head++) { w = q[head]; i = pred[w] ^ 1; u = par[w]; if (adj[u]->next == NULL) { for (k = 0; k < A[u]; k++) e[i].dp[k] = 1; for (k = A[u]; k <= 1000; k++) e[i].dp[k] = 2; } else { e[i].dp[0] = div_mod(prod[u][1000], e[i^1].dp[1000], Mod); for (k = 1; k < A[u]; k++) e[i].dp[k] = e[i].dp[0]; for (k = A[u]; k <= 1000; k++) e[i].dp[k] = (e[i].dp[0] + div_mod(prod[u][k], e[i^1].dp[k], Mod)) % Mod; } for (k = 0; k <= 1000; k++) { for (p = adj[w], prod[w][k] = 1; p != NULL; p = p->next) prod[w][k] = prod[w][k] * p->dp[k] % Mod; if (k > 0) ans += (prod[w][k] - prod[w][k-1] + Mod) * ((k >= A[w])? k: A[w]) % Mod; } ans += prod[w][0] * A[w] % Mod; } printf("%lld\n", ans % Mod); fflush(stdout); return 0; }