QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#541841 | #4815. Flower's Land | gubshig | TL | 44ms | 6096kb | C++17 | 2.5kb | 2024-08-31 21:07:39 | 2024-08-31 21:07:39 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
constexpr int MAX_N = 40001, MAX_K = 3001;
using ll = long long;
int N, K;
vector<ll> Dp[MAX_N];
ll A[MAX_N], Ans[MAX_N];
vector<int> Adj[MAX_N];
void Comb(vector<ll> &dp1, vector<ll> &dp2) {
assert(dp1.size() <= K + 1 && dp2.size() <= K + 1);
dp1.resize(min(K, (int) dp1.size() + (int) dp2.size() - 1) + 1);
for (int i = (int) dp1.size() - 1; i >= 0; i--) {
for (int j = min(i, (int) dp2.size() - 1); j >= 0; j--) {
dp1[i] = max(dp1[i], dp1[i - j] + dp2[j]);
}
}
}
void Extend(vector<ll> &dp, int v) {
if (dp.size() <= K) dp.push_back(0);
for (int i = (int) dp.size() - 2; i >= 0; i--) {
dp[i + 1] = dp[i] + A[v];
}
}
void Dfs1(int v, int p=0) {
Dp[v].push_back(0);
for (auto &nxt: Adj[v]) {
if (nxt != p) {
Dfs1(nxt, v);
auto nxt_dp = Dp[nxt];
Extend(nxt_dp, nxt);
Comb(Dp[v], nxt_dp);
}
}
}
void Dfs2(int v, vector<ll> par_dp={0}, int p=0) {
vector<vector<ll>> cdp(Adj[v].size() - (p != 0) + 1);
cdp[0] = par_dp;
int it = 1;
for (auto &nxt: Adj[v]) {
if (nxt == p) continue;
cdp[it] = cdp[it - 1];
auto nxt_dp = Dp[nxt];
Extend(nxt_dp, nxt);
Comb(cdp[it], nxt_dp);
it++;
}
reverse(Adj[v].begin(), Adj[v].end());
it = (int) cdp.size() - 1;
vector<ll> cumult_dp = {0};
for (auto &nxt: Adj[v]) {
if (nxt == p) continue;
it--;
auto prev_cdp = cumult_dp;
Comb(prev_cdp, cdp[it]);
Extend(prev_cdp, v);
Dfs2(nxt, prev_cdp, v);
for (int i = 0; i < min((int) prev_cdp.size(), K); i++) {
if (K - i - 1 < Dp[nxt].size()) {
Ans[nxt] = max(Ans[nxt], prev_cdp[i] + Dp[nxt][K - i - 1]);
}
}
Ans[nxt] += A[nxt];
Extend(Dp[nxt], nxt);
Comb(cumult_dp, Dp[nxt]);
}
}
int main() {
cin.tie(nullptr)->sync_with_stdio(0);
cin >> N >> K;
for (int i = 1; i <= N; i++) cin >> A[i];
for (int it = 0; it < N - 1; it++) {
int u, v; cin >> u >> v;
Adj[u].push_back(v);
Adj[v].push_back(u);
}
int root = 1;
Dfs1(root);
Ans[root] = Dp[root][K - 1] + A[root];
Dfs2(root);
for (int i = 1; i <= N; i++) {
cout << Ans[i] << " ";
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 5488kb
input:
5 3 6 10 4 3 4 3 4 4 2 2 5 5 1
output:
20 20 17 17 20
result:
ok 5 number(s): "20 20 17 17 20"
Test #2:
score: 0
Accepted
time: 1ms
memory: 5400kb
input:
7 4 1 3 2 1 7 12 17 4 6 1 4 5 1 2 5 7 6 3 2
output:
31 13 13 31 21 31 31
result:
ok 7 numbers
Test #3:
score: 0
Accepted
time: 0ms
memory: 6028kb
input:
1 1 20
output:
20
result:
ok 1 number(s): "20"
Test #4:
score: 0
Accepted
time: 1ms
memory: 5476kb
input:
10 3 19 7 25 18 93 97 21 51 60 80 6 7 7 1 1 9 9 10 10 2 2 5 5 3 3 8 8 4
output:
159 180 169 94 180 137 137 169 159 180
result:
ok 10 numbers
Test #5:
score: 0
Accepted
time: 1ms
memory: 5712kb
input:
20 3 932 609 248 720 831 253 418 482 1000 542 436 304 217 163 872 380 704 845 497 610 17 12 1 17 15 17 13 17 2 15 16 2 18 16 8 16 4 16 19 4 6 4 20 19 10 19 9 10 5 10 7 9 3 9 14 5 11 7
output:
2508 2185 1790 1945 2373 1470 1960 1707 2373 2373 1854 1940 1853 1536 2508 1945 2508 1945 2039 1827
result:
ok 20 numbers
Test #6:
score: 0
Accepted
time: 1ms
memory: 6032kb
input:
40 5 1105 1687 737 6321 7793 7325 3443 2983 6912 6304 4211 5325 7774 7857 5121 8331 9317 1042 8291 9698 7373 440 9788 7938 7191 5563 4554 596 9733 4920 5398 3642 844 5733 4048 4417 8279 3054 4596 3153 12 17 12 36 12 15 12 13 12 2 12 30 12 18 12 33 12 4 12 39 12 25 12 20 12 10 12 9 12 23 12 29 12 3 1...
output:
35649 36231 35281 40865 42337 41869 37987 37527 41456 40848 38755 43861 42318 42401 39665 42875 43861 35586 42835 43861 41917 34984 43861 42482 41735 40107 39098 35140 43861 39464 39942 38186 35388 40277 38592 38961 42823 37598 39140 37697
result:
ok 40 numbers
Test #7:
score: 0
Accepted
time: 0ms
memory: 5708kb
input:
100 10 11845 7520 37311 70194 67214 68176 40075 13721 13118 2555 27023 65012 36716 47598 62807 83049 95169 73454 955 72471 72461 38753 7766 53638 20670 21008 37771 97099 75063 80585 66232 33603 92301 21230 20888 96576 51530 90712 95603 93535 59988 78079 96958 42006 35041 22283 35258 7871 45967 7101 ...
output:
777955 640628 803421 836304 843042 834286 806185 779831 579059 768665 688155 851049 812544 813708 791287 836304 836304 849282 767065 848299 848289 804863 773876 829466 485824 579059 803881 614459 579059 627078 585962 735460 564264 614459 688155 836304 827358 836304 851049 792569 616369 851049 792569...
result:
ok 100 numbers
Test #8:
score: 0
Accepted
time: 0ms
memory: 5672kb
input:
200 30 332408 397037 98648 388661 351913 146463 354518 148254 131018 214842 465228 340704 397726 443065 248835 223274 239234 260094 420186 444939 5604 433696 253672 122804 20775 178018 260524 40342 259288 399226 146027 273111 141307 489658 150962 170539 339581 10624 479316 460184 467714 261732 46024...
output:
8467030 8324860 9617392 8550455 8359951 8715141 9584815 9799514 10012956 8550455 10066359 8550455 8550455 8986218 8986218 8825653 8762772 8550455 9726253 8550455 8467030 8825653 8839704 10066359 8986218 10066359 8304862 9639651 9859760 9617392 8868772 8514159 9426790 9859760 8498063 8986218 8324860 ...
result:
ok 200 numbers
Test #9:
score: 0
Accepted
time: 2ms
memory: 5508kb
input:
500 50 431046 133020 268267 491421 73671 392721 149244 135041 434815 18486 70564 263715 274349 404449 348097 483453 364113 43751 27061 195734 120574 431695 191727 280919 428553 367375 451076 52558 252110 455439 202418 248384 458283 190737 59309 282145 401725 53022 493885 265157 92783 353158 80778 61...
output:
20366165 20099795 19698680 20229707 19306723 20227402 19782211 19051032 20375973 19885123 19259866 19076748 19704511 19762890 20156234 20375973 19233722 19835639 19446421 19762890 20087277 20060994 20200319 20289511 19712344 20032061 20404625 20061150 20404625 19548733 19821412 20256976 19521113 201...
result:
ok 500 numbers
Test #10:
score: 0
Accepted
time: 29ms
memory: 6096kb
input:
500 400 33910 461235 315800 145874 343269 175059 408612 221965 16340 2515 422955 234650 187046 423377 294201 99471 64827 13512 85115 266243 210853 339475 64307 195988 40756 267621 410907 96760 299062 16226 151894 344109 341276 300471 249190 495402 144975 357953 143882 203217 15918 285363 167985 2374...
output:
113072802 113172097 113172097 113172097 113172097 113172097 113172097 113172097 113055232 113041407 113172097 113172097 113171926 113172097 113172097 113138363 113103719 113172097 113124007 113172097 113172097 113172097 113103199 113171926 113079648 113172097 113172097 113172097 113172097 113055118 ...
result:
ok 500 numbers
Test #11:
score: 0
Accepted
time: 42ms
memory: 6028kb
input:
500 490 117374 249369 65444 455139 404356 129652 168404 56937 1697 345028 216885 481757 311538 289421 132904 325897 155999 425799 289231 139118 371316 184647 461098 302736 394189 414790 76013 112329 470253 126627 36943 484399 60053 366699 449169 124581 468634 52694 216412 122134 230370 484278 136219...
output:
122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 122937414 ...
result:
ok 500 numbers
Test #12:
score: 0
Accepted
time: 44ms
memory: 6004kb
input:
500 500 431210 77070 4168 286007 179851 418354 12453 99059 192427 481988 368024 145623 134091 338569 209592 464774 172050 82103 247518 197687 218054 253957 188842 373155 374232 189211 7096 367467 416866 264229 128219 200393 183624 64102 172463 382229 1546 245952 67110 191276 112904 60576 21745 83247...
output:
120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 120249891 ...
result:
ok 500 numbers
Test #13:
score: -100
Time Limit Exceeded
input:
3000 2000 340027 415811 82817 134561 419447 365926 381133 23095 144595 26419 34153 489015 151446 273203 228955 325803 437286 326169 35163 295198 302964 309536 332477 53338 182205 51414 450400 365788 50804 13496 334250 251277 273738 492662 361508 127917 233762 227013 237730 443529 487736 322954 18598...