#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 4e5 + 5;
int lab[maxn], deg[maxn];
int n;
int findset(int u) {
if (lab[u] == u) return u;
return lab[u] = findset(lab[u]);
}
bool join(int u, int v) {
u = findset(u); v = findset(v);
if (u == v) return false;
lab[v] = u;
return true;
}
long long plan_roller_coaster(vector<int> s, vector<int> t) {
vector<int> coor;
n = s.size();
for (int & i : s) coor.push_back(i);
for (int & i : t) coor.push_back(i);
sort(coor.begin(), coor.end());
coor.erase(unique(coor.begin(), coor.end()), coor.end());
iota(lab, lab + coor.size(), 0);
auto compv = [&](int v) {
return lower_bound(coor.begin(), coor.end(), v) - coor.begin();
};
for (int & i : s) i = compv(i);
for (int & i : t) i = compv(i);
for (int i = 0; i < n; ++i) {
++deg[s[i]];
--deg[t[i]];
join(s[i], t[i]);
}
vector<array<int, 3>> edges;
ll ret = 0;
deg[coor.size() - 1]++;
deg[0]--;
int m = coor.size();
for (int i = coor.size() - 1; i >= 1; --i) {
edges.push_back({coor[i] - coor[i - 1], i, i - 1});
if (deg[i] < 0) {
deg[i - 1] += deg[i];
join(i, i - 1);
ret += 1ll * (coor[i] - coor[i - 1]) * abs(deg[i]);
//cerr << coor[i] << ' ';
} else if (deg[i] > 0) {
deg[i - 1] += deg[i];
join(i, i - 1);
}
}
//for (int & i : deg) assert(i == 0);
//for (int i = 0; i < coor.size(); ++i)
//cerr << coor[i] << ' ' << deg[i] << '\n';
sort(edges.begin(), edges.end());
for (auto & it : edges) {
if (join(it[1], it[2])) {
//cerr << it[0] << ' ' << coor[it[1]] << ' ' << coor[it[2]] << '\n';
ret += it[0];
}
}
return ret;
}
#ifdef LOCAL
signed main(void) {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#ifdef LOCAL
freopen("A.INP", "r", stdin);
freopen("A.OUT", "w", stdout);
#endif // LOCAL
int n; cin >> n;
vector<int> s(n), t(n);
for (int & i : s) cin >> i;
for (int & i : t) cin >> i;
cout << plan_roller_coaster(s, t);
}
#endif // LOCAL
Compilation message
railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:48:7: warning: unused variable 'm' [-Wunused-variable]
48 | int m = coor.size();
| ^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
512 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 |
380 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 |
364 KB |
n = 8 |
25 |
Correct |
1 ms |
364 KB |
n = 8 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
512 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 |
380 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 |
364 KB |
n = 8 |
25 |
Correct |
1 ms |
364 KB |
n = 8 |
26 |
Correct |
1 ms |
364 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 |
364 KB |
n = 16 |
33 |
Correct |
1 ms |
364 KB |
n = 16 |
34 |
Correct |
1 ms |
364 KB |
n = 16 |
35 |
Correct |
1 ms |
512 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 |
364 KB |
n = 16 |
40 |
Correct |
15 ms |
492 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 |
2 ms |
364 KB |
n = 9 |
45 |
Correct |
1 ms |
364 KB |
n = 15 |
46 |
Correct |
1 ms |
364 KB |
n = 16 |
47 |
Correct |
1 ms |
364 KB |
n = 16 |
48 |
Correct |
1 ms |
364 KB |
n = 16 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
252 ms |
19848 KB |
n = 199999 |
2 |
Correct |
273 ms |
19588 KB |
n = 199991 |
3 |
Correct |
252 ms |
19800 KB |
n = 199993 |
4 |
Correct |
190 ms |
16564 KB |
n = 152076 |
5 |
Correct |
109 ms |
9692 KB |
n = 93249 |
6 |
Correct |
252 ms |
18008 KB |
n = 199910 |
7 |
Correct |
246 ms |
18904 KB |
n = 199999 |
8 |
Correct |
235 ms |
18136 KB |
n = 199997 |
9 |
Correct |
237 ms |
17880 KB |
n = 171294 |
10 |
Correct |
180 ms |
16236 KB |
n = 140872 |
11 |
Correct |
243 ms |
18136 KB |
n = 199886 |
12 |
Correct |
288 ms |
19160 KB |
n = 199996 |
13 |
Correct |
241 ms |
18264 KB |
n = 200000 |
14 |
Correct |
260 ms |
18904 KB |
n = 199998 |
15 |
Correct |
257 ms |
18776 KB |
n = 200000 |
16 |
Correct |
268 ms |
19160 KB |
n = 199998 |
17 |
Correct |
238 ms |
19672 KB |
n = 200000 |
18 |
Correct |
238 ms |
18904 KB |
n = 190000 |
19 |
Correct |
211 ms |
18136 KB |
n = 177777 |
20 |
Correct |
123 ms |
10040 KB |
n = 100000 |
21 |
Correct |
262 ms |
19416 KB |
n = 200000 |
22 |
Correct |
253 ms |
19672 KB |
n = 200000 |
23 |
Correct |
245 ms |
19800 KB |
n = 200000 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
n = 2 |
2 |
Correct |
1 ms |
512 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 |
380 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 |
364 KB |
n = 8 |
25 |
Correct |
1 ms |
364 KB |
n = 8 |
26 |
Correct |
1 ms |
364 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 |
364 KB |
n = 16 |
33 |
Correct |
1 ms |
364 KB |
n = 16 |
34 |
Correct |
1 ms |
364 KB |
n = 16 |
35 |
Correct |
1 ms |
512 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 |
364 KB |
n = 16 |
40 |
Correct |
15 ms |
492 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 |
2 ms |
364 KB |
n = 9 |
45 |
Correct |
1 ms |
364 KB |
n = 15 |
46 |
Correct |
1 ms |
364 KB |
n = 16 |
47 |
Correct |
1 ms |
364 KB |
n = 16 |
48 |
Correct |
1 ms |
364 KB |
n = 16 |
49 |
Correct |
252 ms |
19848 KB |
n = 199999 |
50 |
Correct |
273 ms |
19588 KB |
n = 199991 |
51 |
Correct |
252 ms |
19800 KB |
n = 199993 |
52 |
Correct |
190 ms |
16564 KB |
n = 152076 |
53 |
Correct |
109 ms |
9692 KB |
n = 93249 |
54 |
Correct |
252 ms |
18008 KB |
n = 199910 |
55 |
Correct |
246 ms |
18904 KB |
n = 199999 |
56 |
Correct |
235 ms |
18136 KB |
n = 199997 |
57 |
Correct |
237 ms |
17880 KB |
n = 171294 |
58 |
Correct |
180 ms |
16236 KB |
n = 140872 |
59 |
Correct |
243 ms |
18136 KB |
n = 199886 |
60 |
Correct |
288 ms |
19160 KB |
n = 199996 |
61 |
Correct |
241 ms |
18264 KB |
n = 200000 |
62 |
Correct |
260 ms |
18904 KB |
n = 199998 |
63 |
Correct |
257 ms |
18776 KB |
n = 200000 |
64 |
Correct |
268 ms |
19160 KB |
n = 199998 |
65 |
Correct |
238 ms |
19672 KB |
n = 200000 |
66 |
Correct |
238 ms |
18904 KB |
n = 190000 |
67 |
Correct |
211 ms |
18136 KB |
n = 177777 |
68 |
Correct |
123 ms |
10040 KB |
n = 100000 |
69 |
Correct |
262 ms |
19416 KB |
n = 200000 |
70 |
Correct |
253 ms |
19672 KB |
n = 200000 |
71 |
Correct |
245 ms |
19800 KB |
n = 200000 |
72 |
Correct |
269 ms |
19032 KB |
n = 200000 |
73 |
Correct |
253 ms |
18904 KB |
n = 200000 |
74 |
Correct |
252 ms |
19032 KB |
n = 200000 |
75 |
Correct |
241 ms |
18904 KB |
n = 200000 |
76 |
Correct |
243 ms |
18904 KB |
n = 200000 |
77 |
Correct |
191 ms |
14172 KB |
n = 200000 |
78 |
Correct |
196 ms |
14428 KB |
n = 200000 |
79 |
Correct |
230 ms |
18392 KB |
n = 184307 |
80 |
Correct |
89 ms |
8668 KB |
n = 76040 |
81 |
Correct |
228 ms |
18136 KB |
n = 199981 |
82 |
Correct |
253 ms |
18904 KB |
n = 199994 |
83 |
Correct |
246 ms |
18264 KB |
n = 199996 |
84 |
Correct |
283 ms |
18904 KB |
n = 199998 |
85 |
Correct |
249 ms |
18776 KB |
n = 200000 |
86 |
Correct |
292 ms |
19032 KB |
n = 199998 |
87 |
Correct |
243 ms |
18948 KB |
n = 200000 |
88 |
Correct |
253 ms |
19032 KB |
n = 200000 |
89 |
Correct |
238 ms |
18904 KB |
n = 200000 |
90 |
Correct |
261 ms |
18904 KB |
n = 200000 |
91 |
Correct |
255 ms |
18904 KB |
n = 200000 |
92 |
Correct |
244 ms |
18904 KB |
n = 200000 |