#include "railroad.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define REP(i,n) for(int i = 0; i < n; i ++)
#define FOR(i,a,b) for(int i = a; i < b; i ++)
#define vi vector<int>
#define pb push_back
#define pii pair<int,int>
#define F first
#define S second
#define mii unordered_map<int,int>
#define SZ(v) (int)v.size()
const int MX = 200005;
int n;
mii flux;
mii par;
int find(int u){
if(par[u] == u) return u;
return par[u] = find(par[u]);
}
void merge(int u,int v){
u = find(u);
v = find(v);
if(rand()%2) swap(u,v);
par[u] = v;
}
ll plan_roller_coaster(vi s, vi t){
s.pb(1000000000);
t.pb(1);
n = SZ(s);
REP(i,n){
par[s[i]] = s[i];
par[t[i]] = t[i];
}
REP(i,n){
flux[s[i]]++;
flux[t[i]]--;
merge(s[i],t[i]);
}
vector<pii> gg;
for(auto x:flux){
gg.pb(x);
}
sort(gg.begin(),gg.end());
ll ans = 0,cur = 0;
vector<pair<int,pii> > edges;
REP(i,SZ(gg)-1){
cur += gg[i].S;
if(cur < 0){
merge(gg[i].F,gg[i+1].F);
}
else if(cur == 0){
edges.pb({gg[i+1].F-gg[i].F,{gg[i].F,gg[i+1].F}});
}
else{
ans += cur*(gg[i+1].F-gg[i].F);
merge(gg[i].F,gg[i+1].F);
}
}
sort(edges.begin(),edges.end());
for(auto x:edges){
if(find(x.S.F) != find(x.S.S)){
ans += x.F;
merge(x.S.F,x.S.S);
}
}
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
n = 2 |
2 |
Correct |
1 ms |
204 KB |
n = 2 |
3 |
Correct |
1 ms |
204 KB |
n = 2 |
4 |
Correct |
1 ms |
204 KB |
n = 2 |
5 |
Correct |
1 ms |
292 KB |
n = 2 |
6 |
Correct |
0 ms |
204 KB |
n = 2 |
7 |
Correct |
0 ms |
204 KB |
n = 3 |
8 |
Correct |
1 ms |
204 KB |
n = 3 |
9 |
Correct |
1 ms |
204 KB |
n = 3 |
10 |
Correct |
1 ms |
204 KB |
n = 8 |
11 |
Correct |
1 ms |
204 KB |
n = 8 |
12 |
Correct |
1 ms |
204 KB |
n = 8 |
13 |
Correct |
1 ms |
204 KB |
n = 8 |
14 |
Correct |
1 ms |
204 KB |
n = 8 |
15 |
Correct |
1 ms |
204 KB |
n = 8 |
16 |
Correct |
1 ms |
204 KB |
n = 8 |
17 |
Correct |
0 ms |
204 KB |
n = 8 |
18 |
Correct |
1 ms |
204 KB |
n = 8 |
19 |
Correct |
1 ms |
204 KB |
n = 3 |
20 |
Correct |
1 ms |
204 KB |
n = 7 |
21 |
Correct |
1 ms |
204 KB |
n = 8 |
22 |
Correct |
1 ms |
204 KB |
n = 8 |
23 |
Correct |
1 ms |
204 KB |
n = 8 |
24 |
Correct |
1 ms |
204 KB |
n = 8 |
25 |
Correct |
1 ms |
204 KB |
n = 8 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
n = 2 |
2 |
Correct |
1 ms |
204 KB |
n = 2 |
3 |
Correct |
1 ms |
204 KB |
n = 2 |
4 |
Correct |
1 ms |
204 KB |
n = 2 |
5 |
Correct |
1 ms |
292 KB |
n = 2 |
6 |
Correct |
0 ms |
204 KB |
n = 2 |
7 |
Correct |
0 ms |
204 KB |
n = 3 |
8 |
Correct |
1 ms |
204 KB |
n = 3 |
9 |
Correct |
1 ms |
204 KB |
n = 3 |
10 |
Correct |
1 ms |
204 KB |
n = 8 |
11 |
Correct |
1 ms |
204 KB |
n = 8 |
12 |
Correct |
1 ms |
204 KB |
n = 8 |
13 |
Correct |
1 ms |
204 KB |
n = 8 |
14 |
Correct |
1 ms |
204 KB |
n = 8 |
15 |
Correct |
1 ms |
204 KB |
n = 8 |
16 |
Correct |
1 ms |
204 KB |
n = 8 |
17 |
Correct |
0 ms |
204 KB |
n = 8 |
18 |
Correct |
1 ms |
204 KB |
n = 8 |
19 |
Correct |
1 ms |
204 KB |
n = 3 |
20 |
Correct |
1 ms |
204 KB |
n = 7 |
21 |
Correct |
1 ms |
204 KB |
n = 8 |
22 |
Correct |
1 ms |
204 KB |
n = 8 |
23 |
Correct |
1 ms |
204 KB |
n = 8 |
24 |
Correct |
1 ms |
204 KB |
n = 8 |
25 |
Correct |
1 ms |
204 KB |
n = 8 |
26 |
Correct |
1 ms |
204 KB |
n = 8 |
27 |
Correct |
1 ms |
204 KB |
n = 8 |
28 |
Correct |
1 ms |
204 KB |
n = 8 |
29 |
Correct |
1 ms |
204 KB |
n = 16 |
30 |
Correct |
1 ms |
204 KB |
n = 16 |
31 |
Correct |
1 ms |
204 KB |
n = 16 |
32 |
Correct |
1 ms |
204 KB |
n = 16 |
33 |
Correct |
1 ms |
204 KB |
n = 16 |
34 |
Correct |
0 ms |
204 KB |
n = 16 |
35 |
Correct |
1 ms |
204 KB |
n = 16 |
36 |
Correct |
1 ms |
204 KB |
n = 15 |
37 |
Correct |
1 ms |
204 KB |
n = 8 |
38 |
Correct |
1 ms |
204 KB |
n = 16 |
39 |
Correct |
1 ms |
204 KB |
n = 16 |
40 |
Correct |
1 ms |
204 KB |
n = 9 |
41 |
Correct |
1 ms |
204 KB |
n = 16 |
42 |
Correct |
1 ms |
204 KB |
n = 16 |
43 |
Correct |
1 ms |
204 KB |
n = 16 |
44 |
Correct |
1 ms |
204 KB |
n = 9 |
45 |
Correct |
1 ms |
204 KB |
n = 15 |
46 |
Correct |
1 ms |
204 KB |
n = 16 |
47 |
Correct |
1 ms |
204 KB |
n = 16 |
48 |
Correct |
1 ms |
204 KB |
n = 16 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1040 ms |
47252 KB |
n = 199999 |
2 |
Correct |
1004 ms |
50976 KB |
n = 199991 |
3 |
Correct |
1014 ms |
50984 KB |
n = 199993 |
4 |
Correct |
648 ms |
36036 KB |
n = 152076 |
5 |
Correct |
333 ms |
24692 KB |
n = 93249 |
6 |
Correct |
564 ms |
38216 KB |
n = 199910 |
7 |
Correct |
742 ms |
50928 KB |
n = 199999 |
8 |
Correct |
569 ms |
38392 KB |
n = 199997 |
9 |
Correct |
731 ms |
39244 KB |
n = 171294 |
10 |
Correct |
594 ms |
34436 KB |
n = 140872 |
11 |
Correct |
566 ms |
38748 KB |
n = 199886 |
12 |
Correct |
809 ms |
51224 KB |
n = 199996 |
13 |
Correct |
617 ms |
39508 KB |
n = 200000 |
14 |
Correct |
907 ms |
55048 KB |
n = 199998 |
15 |
Correct |
874 ms |
53792 KB |
n = 200000 |
16 |
Correct |
1012 ms |
54440 KB |
n = 199998 |
17 |
Correct |
898 ms |
55708 KB |
n = 200000 |
18 |
Correct |
852 ms |
50060 KB |
n = 190000 |
19 |
Correct |
834 ms |
51564 KB |
n = 177777 |
20 |
Correct |
322 ms |
25680 KB |
n = 100000 |
21 |
Correct |
929 ms |
50956 KB |
n = 200000 |
22 |
Correct |
1254 ms |
53284 KB |
n = 200000 |
23 |
Correct |
1196 ms |
53168 KB |
n = 200000 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
n = 2 |
2 |
Correct |
1 ms |
204 KB |
n = 2 |
3 |
Correct |
1 ms |
204 KB |
n = 2 |
4 |
Correct |
1 ms |
204 KB |
n = 2 |
5 |
Correct |
1 ms |
292 KB |
n = 2 |
6 |
Correct |
0 ms |
204 KB |
n = 2 |
7 |
Correct |
0 ms |
204 KB |
n = 3 |
8 |
Correct |
1 ms |
204 KB |
n = 3 |
9 |
Correct |
1 ms |
204 KB |
n = 3 |
10 |
Correct |
1 ms |
204 KB |
n = 8 |
11 |
Correct |
1 ms |
204 KB |
n = 8 |
12 |
Correct |
1 ms |
204 KB |
n = 8 |
13 |
Correct |
1 ms |
204 KB |
n = 8 |
14 |
Correct |
1 ms |
204 KB |
n = 8 |
15 |
Correct |
1 ms |
204 KB |
n = 8 |
16 |
Correct |
1 ms |
204 KB |
n = 8 |
17 |
Correct |
0 ms |
204 KB |
n = 8 |
18 |
Correct |
1 ms |
204 KB |
n = 8 |
19 |
Correct |
1 ms |
204 KB |
n = 3 |
20 |
Correct |
1 ms |
204 KB |
n = 7 |
21 |
Correct |
1 ms |
204 KB |
n = 8 |
22 |
Correct |
1 ms |
204 KB |
n = 8 |
23 |
Correct |
1 ms |
204 KB |
n = 8 |
24 |
Correct |
1 ms |
204 KB |
n = 8 |
25 |
Correct |
1 ms |
204 KB |
n = 8 |
26 |
Correct |
1 ms |
204 KB |
n = 8 |
27 |
Correct |
1 ms |
204 KB |
n = 8 |
28 |
Correct |
1 ms |
204 KB |
n = 8 |
29 |
Correct |
1 ms |
204 KB |
n = 16 |
30 |
Correct |
1 ms |
204 KB |
n = 16 |
31 |
Correct |
1 ms |
204 KB |
n = 16 |
32 |
Correct |
1 ms |
204 KB |
n = 16 |
33 |
Correct |
1 ms |
204 KB |
n = 16 |
34 |
Correct |
0 ms |
204 KB |
n = 16 |
35 |
Correct |
1 ms |
204 KB |
n = 16 |
36 |
Correct |
1 ms |
204 KB |
n = 15 |
37 |
Correct |
1 ms |
204 KB |
n = 8 |
38 |
Correct |
1 ms |
204 KB |
n = 16 |
39 |
Correct |
1 ms |
204 KB |
n = 16 |
40 |
Correct |
1 ms |
204 KB |
n = 9 |
41 |
Correct |
1 ms |
204 KB |
n = 16 |
42 |
Correct |
1 ms |
204 KB |
n = 16 |
43 |
Correct |
1 ms |
204 KB |
n = 16 |
44 |
Correct |
1 ms |
204 KB |
n = 9 |
45 |
Correct |
1 ms |
204 KB |
n = 15 |
46 |
Correct |
1 ms |
204 KB |
n = 16 |
47 |
Correct |
1 ms |
204 KB |
n = 16 |
48 |
Correct |
1 ms |
204 KB |
n = 16 |
49 |
Correct |
1040 ms |
47252 KB |
n = 199999 |
50 |
Correct |
1004 ms |
50976 KB |
n = 199991 |
51 |
Correct |
1014 ms |
50984 KB |
n = 199993 |
52 |
Correct |
648 ms |
36036 KB |
n = 152076 |
53 |
Correct |
333 ms |
24692 KB |
n = 93249 |
54 |
Correct |
564 ms |
38216 KB |
n = 199910 |
55 |
Correct |
742 ms |
50928 KB |
n = 199999 |
56 |
Correct |
569 ms |
38392 KB |
n = 199997 |
57 |
Correct |
731 ms |
39244 KB |
n = 171294 |
58 |
Correct |
594 ms |
34436 KB |
n = 140872 |
59 |
Correct |
566 ms |
38748 KB |
n = 199886 |
60 |
Correct |
809 ms |
51224 KB |
n = 199996 |
61 |
Correct |
617 ms |
39508 KB |
n = 200000 |
62 |
Correct |
907 ms |
55048 KB |
n = 199998 |
63 |
Correct |
874 ms |
53792 KB |
n = 200000 |
64 |
Correct |
1012 ms |
54440 KB |
n = 199998 |
65 |
Correct |
898 ms |
55708 KB |
n = 200000 |
66 |
Correct |
852 ms |
50060 KB |
n = 190000 |
67 |
Correct |
834 ms |
51564 KB |
n = 177777 |
68 |
Correct |
322 ms |
25680 KB |
n = 100000 |
69 |
Correct |
929 ms |
50956 KB |
n = 200000 |
70 |
Correct |
1254 ms |
53284 KB |
n = 200000 |
71 |
Correct |
1196 ms |
53168 KB |
n = 200000 |
72 |
Correct |
1066 ms |
50916 KB |
n = 200000 |
73 |
Correct |
1071 ms |
50940 KB |
n = 200000 |
74 |
Correct |
1060 ms |
50932 KB |
n = 200000 |
75 |
Correct |
871 ms |
50876 KB |
n = 200000 |
76 |
Correct |
919 ms |
50916 KB |
n = 200000 |
77 |
Correct |
483 ms |
33860 KB |
n = 200000 |
78 |
Correct |
505 ms |
32264 KB |
n = 200000 |
79 |
Correct |
874 ms |
48020 KB |
n = 184307 |
80 |
Correct |
222 ms |
18340 KB |
n = 76040 |
81 |
Correct |
570 ms |
38760 KB |
n = 199981 |
82 |
Correct |
768 ms |
51220 KB |
n = 199994 |
83 |
Correct |
623 ms |
39564 KB |
n = 199996 |
84 |
Correct |
932 ms |
54896 KB |
n = 199998 |
85 |
Correct |
875 ms |
53836 KB |
n = 200000 |
86 |
Correct |
1097 ms |
54484 KB |
n = 199998 |
87 |
Correct |
885 ms |
55596 KB |
n = 200000 |
88 |
Correct |
859 ms |
51820 KB |
n = 200000 |
89 |
Correct |
893 ms |
55800 KB |
n = 200000 |
90 |
Correct |
868 ms |
50964 KB |
n = 200000 |
91 |
Correct |
1143 ms |
53312 KB |
n = 200000 |
92 |
Correct |
1181 ms |
53288 KB |
n = 200000 |