# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
743891 |
2023-05-18T05:52:18 Z |
pavement |
Tourism (JOI23_tourism) |
C++17 |
|
5000 ms |
48376 KB |
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define mt make_tuple
using ii = pair<int, int>;
using iiii = tuple<int, int, int, int>;
const int BLK_SZ = 350;
int N, M, Q, wL, wR = -1, idx, cur, sv_cur, out[100005], C[100005], L[100005], R[100005], pre[100005], dep[100005], ll[100005], rr[100005], anc[25][100005];
iiii T[100005];
vector<int> adj[100005];
multiset<ii> S;
unordered_map<int, int> seen[100005];
void dfs(int n, int e = -1) {
pre[n] = ++idx;
for (int k = 1; k <= 17; k++) {
if (anc[k - 1][n] == -1) break;
anc[k][n] = anc[k - 1][anc[k - 1][n]];
}
for (auto u : adj[n]) if (u != e) {
anc[0][u] = n;
dep[u] = dep[n] + 1;
dfs(u, n);
}
}
int lca(int u, int v) {
if (dep[u] > dep[v]) swap(u, v);
for (int k = 17; k >= 0; k--) {
if (dep[v] - (1 << k) >= dep[u]) {
v = anc[k][v];
}
}
if (u == v) return u;
for (int k = 17; k >= 0; k--) {
if (anc[k][u] != anc[k][v]) {
u = anc[k][u];
v = anc[k][v];
}
}
return anc[0][u];
}
int dist(int u, int v) {
if (seen[u].find(v) != seen[u].end()) return seen[u][v];
int w = lca(u, v);
return seen[u][v] = seen[v][u] = dep[u] + dep[v] - 2 * dep[w];
}
void add_path(int u, int v) {
cur += dist(u, v);
}
void rem_path(int u, int v) {
cur -= dist(u, v);
}
void add(int k) {
S.emplace(pre[k], k);
auto it = S.find(mp(pre[k], k));
ii x = mp(-1, -1), y = mp(-1, -1);
if (it != S.begin()) {
--it;
x = *it;
++it;
}
++it;
if (it != S.end()) {
y = *it;
}
--it;
if (x.first != -1 && y.first != -1) {
rem_path(x.second, y.second);
} else if (x.first == -1 && y.first != -1) {
auto it2 = --S.end();
rem_path(y.second, it2->second);
} else if (y.first == -1 && x.first != -1) {
auto it2 = S.begin();
rem_path(x.second, it2->second);
}
if (x.first == -1 && y.first == -1) {}
else if (x.first == -1) {
auto it2 = --S.end();
add_path(it2->second, k);
add_path(k, y.second);
} else if (y.first == -1) {
auto it2 = S.begin();
add_path(x.second, k);
add_path(k, it2->second);
} else {
add_path(x.second, k);
add_path(k, y.second);
}
}
void rem(int k) {
S.erase(S.find(mp(pre[k], k)));
}
int main() {
memset(anc, -1, sizeof anc);
ios::sync_with_stdio(0);
cin.tie(0);
cin >> N >> M >> Q;
for (int i = 1; i <= M; i++) {
if (ll[i / BLK_SZ] == 0) ll[i / BLK_SZ] = i;
rr[i / BLK_SZ] = i;
}
for (int i = 1, u, v; i < N; i++) {
cin >> u >> v;
adj[u].pb(v);
adj[v].pb(u);
}
dfs(1);
for (int i = 1; i <= M; i++) {
cin >> C[i];
}
for (int i = 1; i <= Q; i++) {
cin >> L[i] >> R[i];
T[i] = mt(L[i] / BLK_SZ, R[i], L[i], i);
}
sort(T + 1, T + 1 + Q);
for (int i = 1; i <= Q; i++) {
auto [_, r, l, idx] = T[i];
L[i] = l;
R[i] = r;
if (L[i] / BLK_SZ == R[i] / BLK_SZ) {
continue;
}
// move window to [L[i], R[i]]
if (wR == -1 || wL / BLK_SZ - 1 != L[i] / BLK_SZ) {
for (int j = wL; j <= wR; j++) rem(C[j]);
cur = 0;
for (int j = rr[L[i] / BLK_SZ] + 1; j <= R[i]; j++) add(C[j]);
sv_cur = cur;
for (int j = rr[L[i] / BLK_SZ]; j >= L[i]; j--) add(C[j]);
out[idx] = cur / 2 + 1;
for (int j = rr[L[i] / BLK_SZ]; j >= L[i]; j--) rem(C[j]);
cur = sv_cur;
wL = rr[L[i] / BLK_SZ] + 1;
wR = R[i];
continue;
}
for (int j = wR + 1; j <= R[i]; j++) add(C[j]);
sv_cur = cur;
for (int j = rr[L[i] / BLK_SZ]; j >= L[i]; j--) add(C[j]);
out[idx] = cur / 2 + 1;
for (int j = rr[L[i] / BLK_SZ]; j >= L[i]; j--) rem(C[j]);
cur = sv_cur;
wL = rr[L[i] / BLK_SZ] + 1;
wR = R[i];
}
for (int i = wL; i <= wR; i++) rem(C[i]);
cur = 0;
for (int i = 1; i <= Q; i++) {
if (L[i] / BLK_SZ == R[i] / BLK_SZ) {
for (int j = L[i]; j <= R[i]; j++) add(C[j]);
out[get<3>(T[i])] = cur / 2 + 1;
for (int j = L[i]; j <= R[i]; j++) rem(C[j]);
cur = 0;
}
}
for (int i = 1; i <= Q; i++) {
cout << out[i] << '\n';
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
17876 KB |
Output is correct |
2 |
Correct |
10 ms |
17876 KB |
Output is correct |
3 |
Correct |
10 ms |
17944 KB |
Output is correct |
4 |
Correct |
16 ms |
18124 KB |
Output is correct |
5 |
Correct |
13 ms |
18004 KB |
Output is correct |
6 |
Correct |
13 ms |
18004 KB |
Output is correct |
7 |
Correct |
15 ms |
18092 KB |
Output is correct |
8 |
Correct |
13 ms |
18072 KB |
Output is correct |
9 |
Correct |
23 ms |
18260 KB |
Output is correct |
10 |
Correct |
19 ms |
18184 KB |
Output is correct |
11 |
Correct |
24 ms |
18156 KB |
Output is correct |
12 |
Correct |
39 ms |
18052 KB |
Output is correct |
13 |
Correct |
36 ms |
18004 KB |
Output is correct |
14 |
Correct |
33 ms |
18060 KB |
Output is correct |
15 |
Correct |
22 ms |
18096 KB |
Output is correct |
16 |
Correct |
18 ms |
18180 KB |
Output is correct |
17 |
Correct |
19 ms |
18168 KB |
Output is correct |
18 |
Correct |
19 ms |
18084 KB |
Output is correct |
19 |
Correct |
20 ms |
18100 KB |
Output is correct |
20 |
Correct |
20 ms |
18132 KB |
Output is correct |
21 |
Correct |
18 ms |
18148 KB |
Output is correct |
22 |
Correct |
18 ms |
18148 KB |
Output is correct |
23 |
Correct |
18 ms |
18084 KB |
Output is correct |
24 |
Correct |
20 ms |
18132 KB |
Output is correct |
25 |
Correct |
21 ms |
18132 KB |
Output is correct |
26 |
Correct |
19 ms |
18152 KB |
Output is correct |
27 |
Correct |
14 ms |
17876 KB |
Output is correct |
28 |
Correct |
12 ms |
17900 KB |
Output is correct |
29 |
Correct |
11 ms |
17912 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
17876 KB |
Output is correct |
2 |
Correct |
10 ms |
17876 KB |
Output is correct |
3 |
Correct |
10 ms |
17944 KB |
Output is correct |
4 |
Correct |
16 ms |
18124 KB |
Output is correct |
5 |
Correct |
13 ms |
18004 KB |
Output is correct |
6 |
Correct |
13 ms |
18004 KB |
Output is correct |
7 |
Correct |
15 ms |
18092 KB |
Output is correct |
8 |
Correct |
13 ms |
18072 KB |
Output is correct |
9 |
Correct |
23 ms |
18260 KB |
Output is correct |
10 |
Correct |
19 ms |
18184 KB |
Output is correct |
11 |
Correct |
24 ms |
18156 KB |
Output is correct |
12 |
Correct |
39 ms |
18052 KB |
Output is correct |
13 |
Correct |
36 ms |
18004 KB |
Output is correct |
14 |
Correct |
33 ms |
18060 KB |
Output is correct |
15 |
Correct |
22 ms |
18096 KB |
Output is correct |
16 |
Correct |
18 ms |
18180 KB |
Output is correct |
17 |
Correct |
19 ms |
18168 KB |
Output is correct |
18 |
Correct |
19 ms |
18084 KB |
Output is correct |
19 |
Correct |
20 ms |
18100 KB |
Output is correct |
20 |
Correct |
20 ms |
18132 KB |
Output is correct |
21 |
Correct |
18 ms |
18148 KB |
Output is correct |
22 |
Correct |
18 ms |
18148 KB |
Output is correct |
23 |
Correct |
18 ms |
18084 KB |
Output is correct |
24 |
Correct |
20 ms |
18132 KB |
Output is correct |
25 |
Correct |
21 ms |
18132 KB |
Output is correct |
26 |
Correct |
19 ms |
18152 KB |
Output is correct |
27 |
Correct |
14 ms |
17876 KB |
Output is correct |
28 |
Correct |
12 ms |
17900 KB |
Output is correct |
29 |
Correct |
11 ms |
17912 KB |
Output is correct |
30 |
Correct |
85 ms |
19232 KB |
Output is correct |
31 |
Correct |
109 ms |
19212 KB |
Output is correct |
32 |
Correct |
136 ms |
19672 KB |
Output is correct |
33 |
Correct |
128 ms |
19532 KB |
Output is correct |
34 |
Correct |
126 ms |
19676 KB |
Output is correct |
35 |
Correct |
238 ms |
18516 KB |
Output is correct |
36 |
Correct |
232 ms |
18520 KB |
Output is correct |
37 |
Correct |
285 ms |
18516 KB |
Output is correct |
38 |
Correct |
140 ms |
19664 KB |
Output is correct |
39 |
Correct |
127 ms |
19660 KB |
Output is correct |
40 |
Correct |
125 ms |
19548 KB |
Output is correct |
41 |
Correct |
251 ms |
18612 KB |
Output is correct |
42 |
Correct |
283 ms |
18616 KB |
Output is correct |
43 |
Correct |
273 ms |
18580 KB |
Output is correct |
44 |
Correct |
126 ms |
19600 KB |
Output is correct |
45 |
Correct |
133 ms |
19616 KB |
Output is correct |
46 |
Correct |
143 ms |
19544 KB |
Output is correct |
47 |
Correct |
256 ms |
18540 KB |
Output is correct |
48 |
Correct |
237 ms |
18536 KB |
Output is correct |
49 |
Correct |
242 ms |
18516 KB |
Output is correct |
50 |
Correct |
129 ms |
19552 KB |
Output is correct |
51 |
Correct |
137 ms |
19484 KB |
Output is correct |
52 |
Correct |
133 ms |
19468 KB |
Output is correct |
53 |
Correct |
125 ms |
19612 KB |
Output is correct |
54 |
Correct |
134 ms |
19532 KB |
Output is correct |
55 |
Correct |
143 ms |
19552 KB |
Output is correct |
56 |
Correct |
64 ms |
18072 KB |
Output is correct |
57 |
Correct |
10 ms |
18004 KB |
Output is correct |
58 |
Correct |
12 ms |
18012 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
17876 KB |
Output is correct |
2 |
Correct |
13 ms |
17988 KB |
Output is correct |
3 |
Correct |
63 ms |
18088 KB |
Output is correct |
4 |
Execution timed out |
5042 ms |
48376 KB |
Time limit exceeded |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
17876 KB |
Output is correct |
2 |
Correct |
114 ms |
31020 KB |
Output is correct |
3 |
Correct |
164 ms |
37388 KB |
Output is correct |
4 |
Correct |
130 ms |
34044 KB |
Output is correct |
5 |
Correct |
333 ms |
42808 KB |
Output is correct |
6 |
Correct |
329 ms |
42736 KB |
Output is correct |
7 |
Correct |
304 ms |
43160 KB |
Output is correct |
8 |
Correct |
278 ms |
43272 KB |
Output is correct |
9 |
Correct |
286 ms |
43192 KB |
Output is correct |
10 |
Correct |
271 ms |
42676 KB |
Output is correct |
11 |
Correct |
254 ms |
42304 KB |
Output is correct |
12 |
Correct |
258 ms |
41948 KB |
Output is correct |
13 |
Correct |
242 ms |
40676 KB |
Output is correct |
14 |
Correct |
183 ms |
37900 KB |
Output is correct |
15 |
Correct |
111 ms |
25256 KB |
Output is correct |
16 |
Correct |
302 ms |
40548 KB |
Output is correct |
17 |
Correct |
323 ms |
40396 KB |
Output is correct |
18 |
Correct |
287 ms |
40400 KB |
Output is correct |
19 |
Correct |
310 ms |
42784 KB |
Output is correct |
20 |
Correct |
324 ms |
42428 KB |
Output is correct |
21 |
Correct |
327 ms |
42780 KB |
Output is correct |
22 |
Correct |
346 ms |
43160 KB |
Output is correct |
23 |
Correct |
344 ms |
43452 KB |
Output is correct |
24 |
Correct |
315 ms |
43296 KB |
Output is correct |
25 |
Correct |
351 ms |
43216 KB |
Output is correct |
26 |
Correct |
382 ms |
42820 KB |
Output is correct |
27 |
Correct |
332 ms |
42444 KB |
Output is correct |
28 |
Correct |
321 ms |
42256 KB |
Output is correct |
29 |
Correct |
320 ms |
42056 KB |
Output is correct |
30 |
Correct |
284 ms |
41572 KB |
Output is correct |
31 |
Correct |
256 ms |
40868 KB |
Output is correct |
32 |
Correct |
233 ms |
39300 KB |
Output is correct |
33 |
Correct |
183 ms |
35048 KB |
Output is correct |
34 |
Correct |
90 ms |
25220 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
17876 KB |
Output is correct |
2 |
Correct |
16 ms |
17888 KB |
Output is correct |
3 |
Correct |
62 ms |
18132 KB |
Output is correct |
4 |
Execution timed out |
5066 ms |
45016 KB |
Time limit exceeded |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
17876 KB |
Output is correct |
2 |
Correct |
10 ms |
17876 KB |
Output is correct |
3 |
Correct |
10 ms |
17944 KB |
Output is correct |
4 |
Correct |
16 ms |
18124 KB |
Output is correct |
5 |
Correct |
13 ms |
18004 KB |
Output is correct |
6 |
Correct |
13 ms |
18004 KB |
Output is correct |
7 |
Correct |
15 ms |
18092 KB |
Output is correct |
8 |
Correct |
13 ms |
18072 KB |
Output is correct |
9 |
Correct |
23 ms |
18260 KB |
Output is correct |
10 |
Correct |
19 ms |
18184 KB |
Output is correct |
11 |
Correct |
24 ms |
18156 KB |
Output is correct |
12 |
Correct |
39 ms |
18052 KB |
Output is correct |
13 |
Correct |
36 ms |
18004 KB |
Output is correct |
14 |
Correct |
33 ms |
18060 KB |
Output is correct |
15 |
Correct |
22 ms |
18096 KB |
Output is correct |
16 |
Correct |
18 ms |
18180 KB |
Output is correct |
17 |
Correct |
19 ms |
18168 KB |
Output is correct |
18 |
Correct |
19 ms |
18084 KB |
Output is correct |
19 |
Correct |
20 ms |
18100 KB |
Output is correct |
20 |
Correct |
20 ms |
18132 KB |
Output is correct |
21 |
Correct |
18 ms |
18148 KB |
Output is correct |
22 |
Correct |
18 ms |
18148 KB |
Output is correct |
23 |
Correct |
18 ms |
18084 KB |
Output is correct |
24 |
Correct |
20 ms |
18132 KB |
Output is correct |
25 |
Correct |
21 ms |
18132 KB |
Output is correct |
26 |
Correct |
19 ms |
18152 KB |
Output is correct |
27 |
Correct |
14 ms |
17876 KB |
Output is correct |
28 |
Correct |
12 ms |
17900 KB |
Output is correct |
29 |
Correct |
11 ms |
17912 KB |
Output is correct |
30 |
Correct |
85 ms |
19232 KB |
Output is correct |
31 |
Correct |
109 ms |
19212 KB |
Output is correct |
32 |
Correct |
136 ms |
19672 KB |
Output is correct |
33 |
Correct |
128 ms |
19532 KB |
Output is correct |
34 |
Correct |
126 ms |
19676 KB |
Output is correct |
35 |
Correct |
238 ms |
18516 KB |
Output is correct |
36 |
Correct |
232 ms |
18520 KB |
Output is correct |
37 |
Correct |
285 ms |
18516 KB |
Output is correct |
38 |
Correct |
140 ms |
19664 KB |
Output is correct |
39 |
Correct |
127 ms |
19660 KB |
Output is correct |
40 |
Correct |
125 ms |
19548 KB |
Output is correct |
41 |
Correct |
251 ms |
18612 KB |
Output is correct |
42 |
Correct |
283 ms |
18616 KB |
Output is correct |
43 |
Correct |
273 ms |
18580 KB |
Output is correct |
44 |
Correct |
126 ms |
19600 KB |
Output is correct |
45 |
Correct |
133 ms |
19616 KB |
Output is correct |
46 |
Correct |
143 ms |
19544 KB |
Output is correct |
47 |
Correct |
256 ms |
18540 KB |
Output is correct |
48 |
Correct |
237 ms |
18536 KB |
Output is correct |
49 |
Correct |
242 ms |
18516 KB |
Output is correct |
50 |
Correct |
129 ms |
19552 KB |
Output is correct |
51 |
Correct |
137 ms |
19484 KB |
Output is correct |
52 |
Correct |
133 ms |
19468 KB |
Output is correct |
53 |
Correct |
125 ms |
19612 KB |
Output is correct |
54 |
Correct |
134 ms |
19532 KB |
Output is correct |
55 |
Correct |
143 ms |
19552 KB |
Output is correct |
56 |
Correct |
64 ms |
18072 KB |
Output is correct |
57 |
Correct |
10 ms |
18004 KB |
Output is correct |
58 |
Correct |
12 ms |
18012 KB |
Output is correct |
59 |
Correct |
9 ms |
17876 KB |
Output is correct |
60 |
Correct |
13 ms |
17988 KB |
Output is correct |
61 |
Correct |
63 ms |
18088 KB |
Output is correct |
62 |
Execution timed out |
5042 ms |
48376 KB |
Time limit exceeded |
63 |
Halted |
0 ms |
0 KB |
- |