#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pi;
typedef long long lint;
struct disj{
int pa[400005];
void init(int n){
for(int i=0; i<=n; i++) pa[i] = i;
}
int find(int x){
return pa[x] = (pa[x] == x ? x : find(pa[x]));
}
bool uni(int p, int q){
p = find(p);
q = find(q);
if(p == q) return 0;
pa[q] = p; return 1;
}
}disj;
struct edg{
int s, e, x;
bool operator<(const edg &e)const{
return x < e.x;
}
};
int dx[400005];
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
vector<int> crd;
int n = (int) s.size();
for(int i=0; i<n; i++){
crd.push_back(s[i]);
crd.push_back(t[i]);
}
sort(crd.begin(), crd.end());
crd.resize(unique(crd.begin(), crd.end()) - crd.begin());
disj.init(crd.size());
for(int i=0; i<n; i++){
s[i] = lower_bound(crd.begin(), crd.end(), s[i]) - crd.begin();
t[i] = lower_bound(crd.begin(), crd.end(), t[i]) - crd.begin();
dx[s[i]]++;
dx[t[i]]--;
disj.uni(s[i], t[i]);
}
int cur = 1;
lint ans = 0;
vector<edg> v;
for(int i=crd.size() - 1; i>0; i--){
cur += dx[i];
if(cur < 0){
ans += -1ll * cur * (crd[i] - crd[i-1]);
dx[i-1] += cur;
disj.uni(i-1, i);
cur = 0;
}
if(cur > 0 && i) disj.uni(i, i-1);
else if(cur == 0) v.push_back({i, i-1, crd[i] - crd[i-1]});
}
sort(v.begin(), v.end());
for(auto &i : v){
if(disj.uni(i.s, i.e)) ans += i.x;
}
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
364 KB |
n = 2 |
3 |
Correct |
1 ms |
364 KB |
n = 2 |
4 |
Correct |
1 ms |
364 KB |
n = 2 |
5 |
Correct |
1 ms |
364 KB |
n = 2 |
6 |
Correct |
1 ms |
364 KB |
n = 2 |
7 |
Correct |
1 ms |
364 KB |
n = 3 |
8 |
Correct |
1 ms |
364 KB |
n = 3 |
9 |
Correct |
1 ms |
364 KB |
n = 3 |
10 |
Correct |
1 ms |
364 KB |
n = 8 |
11 |
Correct |
1 ms |
364 KB |
n = 8 |
12 |
Correct |
1 ms |
364 KB |
n = 8 |
13 |
Correct |
1 ms |
364 KB |
n = 8 |
14 |
Correct |
1 ms |
364 KB |
n = 8 |
15 |
Correct |
1 ms |
364 KB |
n = 8 |
16 |
Correct |
1 ms |
364 KB |
n = 8 |
17 |
Correct |
1 ms |
364 KB |
n = 8 |
18 |
Correct |
1 ms |
364 KB |
n = 8 |
19 |
Correct |
1 ms |
364 KB |
n = 3 |
20 |
Correct |
1 ms |
364 KB |
n = 7 |
21 |
Correct |
1 ms |
364 KB |
n = 8 |
22 |
Correct |
1 ms |
364 KB |
n = 8 |
23 |
Correct |
1 ms |
364 KB |
n = 8 |
24 |
Correct |
1 ms |
384 KB |
n = 8 |
25 |
Correct |
1 ms |
384 KB |
n = 8 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
364 KB |
n = 2 |
3 |
Correct |
1 ms |
364 KB |
n = 2 |
4 |
Correct |
1 ms |
364 KB |
n = 2 |
5 |
Correct |
1 ms |
364 KB |
n = 2 |
6 |
Correct |
1 ms |
364 KB |
n = 2 |
7 |
Correct |
1 ms |
364 KB |
n = 3 |
8 |
Correct |
1 ms |
364 KB |
n = 3 |
9 |
Correct |
1 ms |
364 KB |
n = 3 |
10 |
Correct |
1 ms |
364 KB |
n = 8 |
11 |
Correct |
1 ms |
364 KB |
n = 8 |
12 |
Correct |
1 ms |
364 KB |
n = 8 |
13 |
Correct |
1 ms |
364 KB |
n = 8 |
14 |
Correct |
1 ms |
364 KB |
n = 8 |
15 |
Correct |
1 ms |
364 KB |
n = 8 |
16 |
Correct |
1 ms |
364 KB |
n = 8 |
17 |
Correct |
1 ms |
364 KB |
n = 8 |
18 |
Correct |
1 ms |
364 KB |
n = 8 |
19 |
Correct |
1 ms |
364 KB |
n = 3 |
20 |
Correct |
1 ms |
364 KB |
n = 7 |
21 |
Correct |
1 ms |
364 KB |
n = 8 |
22 |
Correct |
1 ms |
364 KB |
n = 8 |
23 |
Correct |
1 ms |
364 KB |
n = 8 |
24 |
Correct |
1 ms |
384 KB |
n = 8 |
25 |
Correct |
1 ms |
384 KB |
n = 8 |
26 |
Correct |
1 ms |
512 KB |
n = 8 |
27 |
Correct |
1 ms |
364 KB |
n = 8 |
28 |
Correct |
1 ms |
364 KB |
n = 8 |
29 |
Correct |
1 ms |
364 KB |
n = 16 |
30 |
Correct |
1 ms |
364 KB |
n = 16 |
31 |
Correct |
1 ms |
364 KB |
n = 16 |
32 |
Correct |
1 ms |
384 KB |
n = 16 |
33 |
Correct |
1 ms |
364 KB |
n = 16 |
34 |
Correct |
1 ms |
364 KB |
n = 16 |
35 |
Correct |
1 ms |
364 KB |
n = 16 |
36 |
Correct |
1 ms |
364 KB |
n = 15 |
37 |
Correct |
1 ms |
364 KB |
n = 8 |
38 |
Correct |
1 ms |
364 KB |
n = 16 |
39 |
Correct |
1 ms |
492 KB |
n = 16 |
40 |
Correct |
1 ms |
364 KB |
n = 9 |
41 |
Correct |
1 ms |
364 KB |
n = 16 |
42 |
Correct |
1 ms |
364 KB |
n = 16 |
43 |
Correct |
1 ms |
364 KB |
n = 16 |
44 |
Correct |
1 ms |
364 KB |
n = 9 |
45 |
Correct |
1 ms |
364 KB |
n = 15 |
46 |
Correct |
1 ms |
384 KB |
n = 16 |
47 |
Correct |
1 ms |
376 KB |
n = 16 |
48 |
Correct |
1 ms |
364 KB |
n = 16 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
193 ms |
12124 KB |
n = 199999 |
2 |
Correct |
260 ms |
20000 KB |
n = 199991 |
3 |
Correct |
259 ms |
19800 KB |
n = 199993 |
4 |
Correct |
145 ms |
9052 KB |
n = 152076 |
5 |
Correct |
89 ms |
5984 KB |
n = 93249 |
6 |
Correct |
182 ms |
10460 KB |
n = 199910 |
7 |
Correct |
176 ms |
11356 KB |
n = 199999 |
8 |
Correct |
171 ms |
10460 KB |
n = 199997 |
9 |
Correct |
158 ms |
10284 KB |
n = 171294 |
10 |
Correct |
130 ms |
8668 KB |
n = 140872 |
11 |
Correct |
171 ms |
10588 KB |
n = 199886 |
12 |
Correct |
175 ms |
12172 KB |
n = 199996 |
13 |
Correct |
179 ms |
11228 KB |
n = 200000 |
14 |
Correct |
195 ms |
15836 KB |
n = 199998 |
15 |
Correct |
197 ms |
15836 KB |
n = 200000 |
16 |
Correct |
225 ms |
16320 KB |
n = 199998 |
17 |
Correct |
236 ms |
22920 KB |
n = 200000 |
18 |
Correct |
197 ms |
16220 KB |
n = 190000 |
19 |
Correct |
179 ms |
10844 KB |
n = 177777 |
20 |
Correct |
84 ms |
6368 KB |
n = 100000 |
21 |
Correct |
187 ms |
12124 KB |
n = 200000 |
22 |
Correct |
223 ms |
16732 KB |
n = 200000 |
23 |
Correct |
221 ms |
16732 KB |
n = 200000 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
364 KB |
n = 2 |
3 |
Correct |
1 ms |
364 KB |
n = 2 |
4 |
Correct |
1 ms |
364 KB |
n = 2 |
5 |
Correct |
1 ms |
364 KB |
n = 2 |
6 |
Correct |
1 ms |
364 KB |
n = 2 |
7 |
Correct |
1 ms |
364 KB |
n = 3 |
8 |
Correct |
1 ms |
364 KB |
n = 3 |
9 |
Correct |
1 ms |
364 KB |
n = 3 |
10 |
Correct |
1 ms |
364 KB |
n = 8 |
11 |
Correct |
1 ms |
364 KB |
n = 8 |
12 |
Correct |
1 ms |
364 KB |
n = 8 |
13 |
Correct |
1 ms |
364 KB |
n = 8 |
14 |
Correct |
1 ms |
364 KB |
n = 8 |
15 |
Correct |
1 ms |
364 KB |
n = 8 |
16 |
Correct |
1 ms |
364 KB |
n = 8 |
17 |
Correct |
1 ms |
364 KB |
n = 8 |
18 |
Correct |
1 ms |
364 KB |
n = 8 |
19 |
Correct |
1 ms |
364 KB |
n = 3 |
20 |
Correct |
1 ms |
364 KB |
n = 7 |
21 |
Correct |
1 ms |
364 KB |
n = 8 |
22 |
Correct |
1 ms |
364 KB |
n = 8 |
23 |
Correct |
1 ms |
364 KB |
n = 8 |
24 |
Correct |
1 ms |
384 KB |
n = 8 |
25 |
Correct |
1 ms |
384 KB |
n = 8 |
26 |
Correct |
1 ms |
512 KB |
n = 8 |
27 |
Correct |
1 ms |
364 KB |
n = 8 |
28 |
Correct |
1 ms |
364 KB |
n = 8 |
29 |
Correct |
1 ms |
364 KB |
n = 16 |
30 |
Correct |
1 ms |
364 KB |
n = 16 |
31 |
Correct |
1 ms |
364 KB |
n = 16 |
32 |
Correct |
1 ms |
384 KB |
n = 16 |
33 |
Correct |
1 ms |
364 KB |
n = 16 |
34 |
Correct |
1 ms |
364 KB |
n = 16 |
35 |
Correct |
1 ms |
364 KB |
n = 16 |
36 |
Correct |
1 ms |
364 KB |
n = 15 |
37 |
Correct |
1 ms |
364 KB |
n = 8 |
38 |
Correct |
1 ms |
364 KB |
n = 16 |
39 |
Correct |
1 ms |
492 KB |
n = 16 |
40 |
Correct |
1 ms |
364 KB |
n = 9 |
41 |
Correct |
1 ms |
364 KB |
n = 16 |
42 |
Correct |
1 ms |
364 KB |
n = 16 |
43 |
Correct |
1 ms |
364 KB |
n = 16 |
44 |
Correct |
1 ms |
364 KB |
n = 9 |
45 |
Correct |
1 ms |
364 KB |
n = 15 |
46 |
Correct |
1 ms |
384 KB |
n = 16 |
47 |
Correct |
1 ms |
376 KB |
n = 16 |
48 |
Correct |
1 ms |
364 KB |
n = 16 |
49 |
Correct |
193 ms |
12124 KB |
n = 199999 |
50 |
Correct |
260 ms |
20000 KB |
n = 199991 |
51 |
Correct |
259 ms |
19800 KB |
n = 199993 |
52 |
Correct |
145 ms |
9052 KB |
n = 152076 |
53 |
Correct |
89 ms |
5984 KB |
n = 93249 |
54 |
Correct |
182 ms |
10460 KB |
n = 199910 |
55 |
Correct |
176 ms |
11356 KB |
n = 199999 |
56 |
Correct |
171 ms |
10460 KB |
n = 199997 |
57 |
Correct |
158 ms |
10284 KB |
n = 171294 |
58 |
Correct |
130 ms |
8668 KB |
n = 140872 |
59 |
Correct |
171 ms |
10588 KB |
n = 199886 |
60 |
Correct |
175 ms |
12172 KB |
n = 199996 |
61 |
Correct |
179 ms |
11228 KB |
n = 200000 |
62 |
Correct |
195 ms |
15836 KB |
n = 199998 |
63 |
Correct |
197 ms |
15836 KB |
n = 200000 |
64 |
Correct |
225 ms |
16320 KB |
n = 199998 |
65 |
Correct |
236 ms |
22920 KB |
n = 200000 |
66 |
Correct |
197 ms |
16220 KB |
n = 190000 |
67 |
Correct |
179 ms |
10844 KB |
n = 177777 |
68 |
Correct |
84 ms |
6368 KB |
n = 100000 |
69 |
Correct |
187 ms |
12124 KB |
n = 200000 |
70 |
Correct |
223 ms |
16732 KB |
n = 200000 |
71 |
Correct |
221 ms |
16732 KB |
n = 200000 |
72 |
Correct |
189 ms |
12252 KB |
n = 200000 |
73 |
Correct |
207 ms |
15196 KB |
n = 200000 |
74 |
Correct |
257 ms |
19800 KB |
n = 200000 |
75 |
Correct |
231 ms |
19800 KB |
n = 200000 |
76 |
Correct |
181 ms |
12124 KB |
n = 200000 |
77 |
Correct |
176 ms |
10588 KB |
n = 200000 |
78 |
Correct |
180 ms |
15324 KB |
n = 200000 |
79 |
Correct |
174 ms |
11100 KB |
n = 184307 |
80 |
Correct |
63 ms |
4960 KB |
n = 76040 |
81 |
Correct |
181 ms |
10588 KB |
n = 199981 |
82 |
Correct |
177 ms |
12124 KB |
n = 199994 |
83 |
Correct |
171 ms |
11356 KB |
n = 199996 |
84 |
Correct |
196 ms |
15964 KB |
n = 199998 |
85 |
Correct |
194 ms |
15708 KB |
n = 200000 |
86 |
Correct |
209 ms |
16220 KB |
n = 199998 |
87 |
Correct |
240 ms |
22916 KB |
n = 200000 |
88 |
Correct |
217 ms |
17116 KB |
n = 200000 |
89 |
Correct |
181 ms |
12124 KB |
n = 200000 |
90 |
Correct |
187 ms |
12252 KB |
n = 200000 |
91 |
Correct |
219 ms |
16604 KB |
n = 200000 |
92 |
Correct |
221 ms |
16604 KB |
n = 200000 |