#include "railroad.h"
#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
using namespace std;
typedef long long ll;
int balance[404040], din[404040], dout[404040];
vector<pair<int, pair<int, int>>> edges;
int cmp[404040];
int find(int a) {
while (cmp[a] != a) cmp[a] = cmp[cmp[a]], a = cmp[a];
return a;
}
void onion(int a, int b) { cmp[find(a)] = cmp[find(b)]; }
ll plan_roller_coaster(vector<int> s, vector<int> t) {
int n = s.size();
FOR(i, 0, n) {
balance[i * 2] = s[i];
balance[i * 2 + 1] = t[i];
}
balance[2 * n] = 1;
balance[2 * n + 1] = 2e9;
sort(balance, balance + 2 * n + 2);
FOR(i, 0, 2 * n + 2) cmp[i] = i;
FOR(i, 0, n) {
s[i] = lower_bound(balance, balance + 2 * n + 2, s[i]) - balance;
t[i] = lower_bound(balance, balance + 2 * n + 2, t[i]) - balance;
din[t[i]]++;
dout[s[i]]++;
onion(t[i], s[i]);
}
din[0]++;
dout[2 * n + 1]++;
onion(0, 2 * n + 1);
ll ans = 0, sm = 0;
FOR(i, 0, 2 * n + 1) {
sm += dout[i] - din[i];
if (sm < 0)
onion(i, i + 1);
else if (sm == 0)
edges.push_back({balance[i + 1] - balance[i], {i, i + 1}});
else {
ans += sm * (balance[i + 1] - balance[i]);
onion(i, i + 1);
}
}
sort(edges.begin(), edges.end());
for (auto& i : edges) {
if (find(i.second.first) != find(i.second.second)) {
onion(i.second.first, i.second.second);
ans += i.first;
}
}
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
n = 2 |
2 |
Correct |
2 ms |
376 KB |
n = 2 |
3 |
Correct |
2 ms |
376 KB |
n = 2 |
4 |
Correct |
2 ms |
376 KB |
n = 2 |
5 |
Correct |
2 ms |
376 KB |
n = 2 |
6 |
Correct |
2 ms |
376 KB |
n = 2 |
7 |
Correct |
2 ms |
376 KB |
n = 3 |
8 |
Correct |
2 ms |
376 KB |
n = 3 |
9 |
Correct |
2 ms |
376 KB |
n = 3 |
10 |
Correct |
2 ms |
376 KB |
n = 8 |
11 |
Correct |
2 ms |
376 KB |
n = 8 |
12 |
Correct |
2 ms |
376 KB |
n = 8 |
13 |
Correct |
2 ms |
376 KB |
n = 8 |
14 |
Correct |
2 ms |
380 KB |
n = 8 |
15 |
Correct |
2 ms |
376 KB |
n = 8 |
16 |
Correct |
2 ms |
376 KB |
n = 8 |
17 |
Correct |
2 ms |
376 KB |
n = 8 |
18 |
Correct |
2 ms |
376 KB |
n = 8 |
19 |
Correct |
2 ms |
376 KB |
n = 3 |
20 |
Correct |
2 ms |
376 KB |
n = 7 |
21 |
Correct |
2 ms |
376 KB |
n = 8 |
22 |
Correct |
2 ms |
376 KB |
n = 8 |
23 |
Correct |
2 ms |
376 KB |
n = 8 |
24 |
Correct |
2 ms |
376 KB |
n = 8 |
25 |
Correct |
2 ms |
376 KB |
n = 8 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
n = 2 |
2 |
Correct |
2 ms |
376 KB |
n = 2 |
3 |
Correct |
2 ms |
376 KB |
n = 2 |
4 |
Correct |
2 ms |
376 KB |
n = 2 |
5 |
Correct |
2 ms |
376 KB |
n = 2 |
6 |
Correct |
2 ms |
376 KB |
n = 2 |
7 |
Correct |
2 ms |
376 KB |
n = 3 |
8 |
Correct |
2 ms |
376 KB |
n = 3 |
9 |
Correct |
2 ms |
376 KB |
n = 3 |
10 |
Correct |
2 ms |
376 KB |
n = 8 |
11 |
Correct |
2 ms |
376 KB |
n = 8 |
12 |
Correct |
2 ms |
376 KB |
n = 8 |
13 |
Correct |
2 ms |
376 KB |
n = 8 |
14 |
Correct |
2 ms |
380 KB |
n = 8 |
15 |
Correct |
2 ms |
376 KB |
n = 8 |
16 |
Correct |
2 ms |
376 KB |
n = 8 |
17 |
Correct |
2 ms |
376 KB |
n = 8 |
18 |
Correct |
2 ms |
376 KB |
n = 8 |
19 |
Correct |
2 ms |
376 KB |
n = 3 |
20 |
Correct |
2 ms |
376 KB |
n = 7 |
21 |
Correct |
2 ms |
376 KB |
n = 8 |
22 |
Correct |
2 ms |
376 KB |
n = 8 |
23 |
Correct |
2 ms |
376 KB |
n = 8 |
24 |
Correct |
2 ms |
376 KB |
n = 8 |
25 |
Correct |
2 ms |
376 KB |
n = 8 |
26 |
Correct |
2 ms |
376 KB |
n = 8 |
27 |
Correct |
2 ms |
376 KB |
n = 8 |
28 |
Correct |
2 ms |
376 KB |
n = 8 |
29 |
Correct |
2 ms |
376 KB |
n = 16 |
30 |
Correct |
2 ms |
376 KB |
n = 16 |
31 |
Correct |
2 ms |
376 KB |
n = 16 |
32 |
Correct |
2 ms |
376 KB |
n = 16 |
33 |
Correct |
2 ms |
376 KB |
n = 16 |
34 |
Correct |
2 ms |
376 KB |
n = 16 |
35 |
Correct |
2 ms |
376 KB |
n = 16 |
36 |
Correct |
2 ms |
376 KB |
n = 15 |
37 |
Correct |
2 ms |
380 KB |
n = 8 |
38 |
Correct |
2 ms |
376 KB |
n = 16 |
39 |
Correct |
2 ms |
376 KB |
n = 16 |
40 |
Correct |
2 ms |
376 KB |
n = 9 |
41 |
Correct |
2 ms |
376 KB |
n = 16 |
42 |
Correct |
2 ms |
376 KB |
n = 16 |
43 |
Correct |
2 ms |
380 KB |
n = 16 |
44 |
Correct |
2 ms |
376 KB |
n = 9 |
45 |
Correct |
2 ms |
376 KB |
n = 15 |
46 |
Correct |
2 ms |
376 KB |
n = 16 |
47 |
Correct |
2 ms |
380 KB |
n = 16 |
48 |
Correct |
2 ms |
376 KB |
n = 16 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
231 ms |
9860 KB |
n = 199999 |
2 |
Correct |
243 ms |
9692 KB |
n = 199991 |
3 |
Correct |
233 ms |
9848 KB |
n = 199993 |
4 |
Correct |
170 ms |
7544 KB |
n = 152076 |
5 |
Correct |
103 ms |
4728 KB |
n = 93249 |
6 |
Correct |
195 ms |
9720 KB |
n = 199910 |
7 |
Correct |
198 ms |
9720 KB |
n = 199999 |
8 |
Correct |
194 ms |
9900 KB |
n = 199997 |
9 |
Correct |
216 ms |
8440 KB |
n = 171294 |
10 |
Correct |
162 ms |
6876 KB |
n = 140872 |
11 |
Correct |
202 ms |
9884 KB |
n = 199886 |
12 |
Correct |
208 ms |
10272 KB |
n = 199996 |
13 |
Correct |
196 ms |
10268 KB |
n = 200000 |
14 |
Correct |
222 ms |
12908 KB |
n = 199998 |
15 |
Correct |
216 ms |
13036 KB |
n = 200000 |
16 |
Correct |
229 ms |
13040 KB |
n = 199998 |
17 |
Correct |
204 ms |
8184 KB |
n = 200000 |
18 |
Correct |
206 ms |
9372 KB |
n = 190000 |
19 |
Correct |
181 ms |
7292 KB |
n = 177777 |
20 |
Correct |
100 ms |
5040 KB |
n = 100000 |
21 |
Correct |
223 ms |
9692 KB |
n = 200000 |
22 |
Correct |
267 ms |
13036 KB |
n = 200000 |
23 |
Correct |
260 ms |
12996 KB |
n = 200000 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
n = 2 |
2 |
Correct |
2 ms |
376 KB |
n = 2 |
3 |
Correct |
2 ms |
376 KB |
n = 2 |
4 |
Correct |
2 ms |
376 KB |
n = 2 |
5 |
Correct |
2 ms |
376 KB |
n = 2 |
6 |
Correct |
2 ms |
376 KB |
n = 2 |
7 |
Correct |
2 ms |
376 KB |
n = 3 |
8 |
Correct |
2 ms |
376 KB |
n = 3 |
9 |
Correct |
2 ms |
376 KB |
n = 3 |
10 |
Correct |
2 ms |
376 KB |
n = 8 |
11 |
Correct |
2 ms |
376 KB |
n = 8 |
12 |
Correct |
2 ms |
376 KB |
n = 8 |
13 |
Correct |
2 ms |
376 KB |
n = 8 |
14 |
Correct |
2 ms |
380 KB |
n = 8 |
15 |
Correct |
2 ms |
376 KB |
n = 8 |
16 |
Correct |
2 ms |
376 KB |
n = 8 |
17 |
Correct |
2 ms |
376 KB |
n = 8 |
18 |
Correct |
2 ms |
376 KB |
n = 8 |
19 |
Correct |
2 ms |
376 KB |
n = 3 |
20 |
Correct |
2 ms |
376 KB |
n = 7 |
21 |
Correct |
2 ms |
376 KB |
n = 8 |
22 |
Correct |
2 ms |
376 KB |
n = 8 |
23 |
Correct |
2 ms |
376 KB |
n = 8 |
24 |
Correct |
2 ms |
376 KB |
n = 8 |
25 |
Correct |
2 ms |
376 KB |
n = 8 |
26 |
Correct |
2 ms |
376 KB |
n = 8 |
27 |
Correct |
2 ms |
376 KB |
n = 8 |
28 |
Correct |
2 ms |
376 KB |
n = 8 |
29 |
Correct |
2 ms |
376 KB |
n = 16 |
30 |
Correct |
2 ms |
376 KB |
n = 16 |
31 |
Correct |
2 ms |
376 KB |
n = 16 |
32 |
Correct |
2 ms |
376 KB |
n = 16 |
33 |
Correct |
2 ms |
376 KB |
n = 16 |
34 |
Correct |
2 ms |
376 KB |
n = 16 |
35 |
Correct |
2 ms |
376 KB |
n = 16 |
36 |
Correct |
2 ms |
376 KB |
n = 15 |
37 |
Correct |
2 ms |
380 KB |
n = 8 |
38 |
Correct |
2 ms |
376 KB |
n = 16 |
39 |
Correct |
2 ms |
376 KB |
n = 16 |
40 |
Correct |
2 ms |
376 KB |
n = 9 |
41 |
Correct |
2 ms |
376 KB |
n = 16 |
42 |
Correct |
2 ms |
376 KB |
n = 16 |
43 |
Correct |
2 ms |
380 KB |
n = 16 |
44 |
Correct |
2 ms |
376 KB |
n = 9 |
45 |
Correct |
2 ms |
376 KB |
n = 15 |
46 |
Correct |
2 ms |
376 KB |
n = 16 |
47 |
Correct |
2 ms |
380 KB |
n = 16 |
48 |
Correct |
2 ms |
376 KB |
n = 16 |
49 |
Correct |
231 ms |
9860 KB |
n = 199999 |
50 |
Correct |
243 ms |
9692 KB |
n = 199991 |
51 |
Correct |
233 ms |
9848 KB |
n = 199993 |
52 |
Correct |
170 ms |
7544 KB |
n = 152076 |
53 |
Correct |
103 ms |
4728 KB |
n = 93249 |
54 |
Correct |
195 ms |
9720 KB |
n = 199910 |
55 |
Correct |
198 ms |
9720 KB |
n = 199999 |
56 |
Correct |
194 ms |
9900 KB |
n = 199997 |
57 |
Correct |
216 ms |
8440 KB |
n = 171294 |
58 |
Correct |
162 ms |
6876 KB |
n = 140872 |
59 |
Correct |
202 ms |
9884 KB |
n = 199886 |
60 |
Correct |
208 ms |
10272 KB |
n = 199996 |
61 |
Correct |
196 ms |
10268 KB |
n = 200000 |
62 |
Correct |
222 ms |
12908 KB |
n = 199998 |
63 |
Correct |
216 ms |
13036 KB |
n = 200000 |
64 |
Correct |
229 ms |
13040 KB |
n = 199998 |
65 |
Correct |
204 ms |
8184 KB |
n = 200000 |
66 |
Correct |
206 ms |
9372 KB |
n = 190000 |
67 |
Correct |
181 ms |
7292 KB |
n = 177777 |
68 |
Correct |
100 ms |
5040 KB |
n = 100000 |
69 |
Correct |
223 ms |
9692 KB |
n = 200000 |
70 |
Correct |
267 ms |
13036 KB |
n = 200000 |
71 |
Correct |
260 ms |
12996 KB |
n = 200000 |
72 |
Correct |
231 ms |
13584 KB |
n = 200000 |
73 |
Correct |
242 ms |
13688 KB |
n = 200000 |
74 |
Correct |
309 ms |
13708 KB |
n = 200000 |
75 |
Correct |
221 ms |
12072 KB |
n = 200000 |
76 |
Correct |
219 ms |
12024 KB |
n = 200000 |
77 |
Correct |
206 ms |
13560 KB |
n = 200000 |
78 |
Correct |
255 ms |
19948 KB |
n = 200000 |
79 |
Correct |
211 ms |
12408 KB |
n = 184307 |
80 |
Correct |
83 ms |
5372 KB |
n = 76040 |
81 |
Correct |
194 ms |
12508 KB |
n = 199981 |
82 |
Correct |
203 ms |
13496 KB |
n = 199994 |
83 |
Correct |
190 ms |
13212 KB |
n = 199996 |
84 |
Correct |
225 ms |
16092 KB |
n = 199998 |
85 |
Correct |
218 ms |
16108 KB |
n = 200000 |
86 |
Correct |
236 ms |
16364 KB |
n = 199998 |
87 |
Correct |
213 ms |
12024 KB |
n = 200000 |
88 |
Correct |
224 ms |
13576 KB |
n = 200000 |
89 |
Correct |
214 ms |
12028 KB |
n = 200000 |
90 |
Correct |
218 ms |
13560 KB |
n = 200000 |
91 |
Correct |
268 ms |
16776 KB |
n = 200000 |
92 |
Correct |
259 ms |
16876 KB |
n = 200000 |