#include <bits/stdc++.h>
#define ll long long
#define db long double
#define II pair <ll,ll>
#define III pair <ll,II>
#define IV pair <vector <int>,vector <int> >
#define IDB pair <db,int>
#define TII pair <treap*,treap*>
#define fst first
#define snd second
#define BIT(x,i) ((x>>i)&1)
#define pi acos(-1)
#define to_radian(x) (x*pi/180.0)
#define to_degree(x) (x*180.0/pi)
#define Log(x) (31-__builtin_clz((int)x))
#define LogLL(x) (63-__builtin_clzll((ll)x))
using namespace std;
#include "railroad.h"
const int oo=2e9;
ll Real[200005],r[200005],u,U[200005],D[200005];
int root(int u) { return u==r[u] ? u : r[u]=root(r[u]); }
struct edge { int u,v,w; } e[200005];
bool join(int u,int v)
{
u=root(u); v=root(v);
if(u==v) return 0;
r[u]=v;
return 1;
}
ll plan_roller_coaster(vector <int> s,vector <int> t)
{
set <int> val;
map <int,int> rr;
val.insert(1);
val.insert(oo);
for(int x:s) val.insert(x);
for(int x:t) val.insert(x);
int n_val=0;
for(int x:val) rr[x]=++n_val,Real[n_val]=x;
int n=s.size(),i,up=0,down=0;
ll res=0;
for(u=1;u<=n_val;u++) r[u]=u;
D[1]++; D[n_val]--;
join(1,n_val);
for(i=0;i<n;i++)
{
s[i]=rr[s[i]]; t[i]=rr[t[i]];
if(s[i]<=t[i]) U[s[i]]++,U[t[i]]--;
else D[t[i]]++,D[s[i]]--;
join(s[i],t[i]);
}
for(i=1;i<n_val;i++)
{
up+=U[i]; down+=D[i];
res+=max(0,up-down)*(Real[i+1]-Real[i]);
if(up!=down) join(i,i+1);
e[i]={ i,i+1,Real[i+1]-Real[i] };
}
sort(e+1,e+n_val,[&](edge a,edge b){ return a.w<b.w; });
for(i=1;i<n_val;i++)
if(join(e[i].u,e[i].v)) res+=e[i].w;
return res;
}
/*
int main()
{
freopen("railroad.inp","r",stdin);
freopen("railroad.out","w",stdout);
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
vector <int> s,t;
int l,r;
while(cin>>l>>r) s.push_back(l),t.push_back(r);
cout<<plan_roller_coaster(s,t);
}
*/
Compilation message
railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:60:31: warning: narrowing conversion of '(Real[(i + 1)] - Real[i])' from 'long long int' to 'int' [-Wnarrowing]
60 | e[i]={ i,i+1,Real[i+1]-Real[i] };
| ~~~~~~~~~^~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
n = 2 |
2 |
Correct |
1 ms |
6488 KB |
n = 2 |
3 |
Correct |
1 ms |
6492 KB |
n = 2 |
4 |
Correct |
1 ms |
6492 KB |
n = 2 |
5 |
Correct |
1 ms |
6492 KB |
n = 2 |
6 |
Correct |
1 ms |
6492 KB |
n = 2 |
7 |
Correct |
1 ms |
6644 KB |
n = 3 |
8 |
Correct |
1 ms |
6492 KB |
n = 3 |
9 |
Correct |
1 ms |
6492 KB |
n = 3 |
10 |
Correct |
1 ms |
6596 KB |
n = 8 |
11 |
Correct |
1 ms |
6492 KB |
n = 8 |
12 |
Correct |
1 ms |
6488 KB |
n = 8 |
13 |
Correct |
1 ms |
6488 KB |
n = 8 |
14 |
Correct |
1 ms |
6492 KB |
n = 8 |
15 |
Correct |
1 ms |
6492 KB |
n = 8 |
16 |
Correct |
1 ms |
6488 KB |
n = 8 |
17 |
Correct |
1 ms |
6488 KB |
n = 8 |
18 |
Correct |
1 ms |
6492 KB |
n = 8 |
19 |
Correct |
1 ms |
6492 KB |
n = 3 |
20 |
Correct |
1 ms |
6492 KB |
n = 7 |
21 |
Correct |
1 ms |
6592 KB |
n = 8 |
22 |
Correct |
1 ms |
6492 KB |
n = 8 |
23 |
Correct |
1 ms |
6492 KB |
n = 8 |
24 |
Correct |
1 ms |
6492 KB |
n = 8 |
25 |
Correct |
1 ms |
6492 KB |
n = 8 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
n = 2 |
2 |
Correct |
1 ms |
6488 KB |
n = 2 |
3 |
Correct |
1 ms |
6492 KB |
n = 2 |
4 |
Correct |
1 ms |
6492 KB |
n = 2 |
5 |
Correct |
1 ms |
6492 KB |
n = 2 |
6 |
Correct |
1 ms |
6492 KB |
n = 2 |
7 |
Correct |
1 ms |
6644 KB |
n = 3 |
8 |
Correct |
1 ms |
6492 KB |
n = 3 |
9 |
Correct |
1 ms |
6492 KB |
n = 3 |
10 |
Correct |
1 ms |
6596 KB |
n = 8 |
11 |
Correct |
1 ms |
6492 KB |
n = 8 |
12 |
Correct |
1 ms |
6488 KB |
n = 8 |
13 |
Correct |
1 ms |
6488 KB |
n = 8 |
14 |
Correct |
1 ms |
6492 KB |
n = 8 |
15 |
Correct |
1 ms |
6492 KB |
n = 8 |
16 |
Correct |
1 ms |
6488 KB |
n = 8 |
17 |
Correct |
1 ms |
6488 KB |
n = 8 |
18 |
Correct |
1 ms |
6492 KB |
n = 8 |
19 |
Correct |
1 ms |
6492 KB |
n = 3 |
20 |
Correct |
1 ms |
6492 KB |
n = 7 |
21 |
Correct |
1 ms |
6592 KB |
n = 8 |
22 |
Correct |
1 ms |
6492 KB |
n = 8 |
23 |
Correct |
1 ms |
6492 KB |
n = 8 |
24 |
Correct |
1 ms |
6492 KB |
n = 8 |
25 |
Correct |
1 ms |
6492 KB |
n = 8 |
26 |
Correct |
1 ms |
6492 KB |
n = 8 |
27 |
Correct |
1 ms |
6492 KB |
n = 8 |
28 |
Correct |
1 ms |
6604 KB |
n = 8 |
29 |
Correct |
1 ms |
6492 KB |
n = 16 |
30 |
Correct |
1 ms |
6488 KB |
n = 16 |
31 |
Correct |
1 ms |
6488 KB |
n = 16 |
32 |
Correct |
1 ms |
6492 KB |
n = 16 |
33 |
Correct |
1 ms |
6492 KB |
n = 16 |
34 |
Correct |
1 ms |
6492 KB |
n = 16 |
35 |
Correct |
1 ms |
6492 KB |
n = 16 |
36 |
Correct |
1 ms |
6492 KB |
n = 15 |
37 |
Correct |
1 ms |
6488 KB |
n = 8 |
38 |
Correct |
1 ms |
6488 KB |
n = 16 |
39 |
Correct |
1 ms |
6488 KB |
n = 16 |
40 |
Correct |
1 ms |
6492 KB |
n = 9 |
41 |
Correct |
1 ms |
6492 KB |
n = 16 |
42 |
Correct |
1 ms |
6492 KB |
n = 16 |
43 |
Correct |
1 ms |
6492 KB |
n = 16 |
44 |
Correct |
1 ms |
6492 KB |
n = 9 |
45 |
Correct |
1 ms |
6556 KB |
n = 15 |
46 |
Correct |
1 ms |
6492 KB |
n = 16 |
47 |
Correct |
1 ms |
6592 KB |
n = 16 |
48 |
Correct |
1 ms |
6492 KB |
n = 16 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
211 ms |
72024 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
6744 KB |
n = 2 |
2 |
Correct |
1 ms |
6488 KB |
n = 2 |
3 |
Correct |
1 ms |
6492 KB |
n = 2 |
4 |
Correct |
1 ms |
6492 KB |
n = 2 |
5 |
Correct |
1 ms |
6492 KB |
n = 2 |
6 |
Correct |
1 ms |
6492 KB |
n = 2 |
7 |
Correct |
1 ms |
6644 KB |
n = 3 |
8 |
Correct |
1 ms |
6492 KB |
n = 3 |
9 |
Correct |
1 ms |
6492 KB |
n = 3 |
10 |
Correct |
1 ms |
6596 KB |
n = 8 |
11 |
Correct |
1 ms |
6492 KB |
n = 8 |
12 |
Correct |
1 ms |
6488 KB |
n = 8 |
13 |
Correct |
1 ms |
6488 KB |
n = 8 |
14 |
Correct |
1 ms |
6492 KB |
n = 8 |
15 |
Correct |
1 ms |
6492 KB |
n = 8 |
16 |
Correct |
1 ms |
6488 KB |
n = 8 |
17 |
Correct |
1 ms |
6488 KB |
n = 8 |
18 |
Correct |
1 ms |
6492 KB |
n = 8 |
19 |
Correct |
1 ms |
6492 KB |
n = 3 |
20 |
Correct |
1 ms |
6492 KB |
n = 7 |
21 |
Correct |
1 ms |
6592 KB |
n = 8 |
22 |
Correct |
1 ms |
6492 KB |
n = 8 |
23 |
Correct |
1 ms |
6492 KB |
n = 8 |
24 |
Correct |
1 ms |
6492 KB |
n = 8 |
25 |
Correct |
1 ms |
6492 KB |
n = 8 |
26 |
Correct |
1 ms |
6492 KB |
n = 8 |
27 |
Correct |
1 ms |
6492 KB |
n = 8 |
28 |
Correct |
1 ms |
6604 KB |
n = 8 |
29 |
Correct |
1 ms |
6492 KB |
n = 16 |
30 |
Correct |
1 ms |
6488 KB |
n = 16 |
31 |
Correct |
1 ms |
6488 KB |
n = 16 |
32 |
Correct |
1 ms |
6492 KB |
n = 16 |
33 |
Correct |
1 ms |
6492 KB |
n = 16 |
34 |
Correct |
1 ms |
6492 KB |
n = 16 |
35 |
Correct |
1 ms |
6492 KB |
n = 16 |
36 |
Correct |
1 ms |
6492 KB |
n = 15 |
37 |
Correct |
1 ms |
6488 KB |
n = 8 |
38 |
Correct |
1 ms |
6488 KB |
n = 16 |
39 |
Correct |
1 ms |
6488 KB |
n = 16 |
40 |
Correct |
1 ms |
6492 KB |
n = 9 |
41 |
Correct |
1 ms |
6492 KB |
n = 16 |
42 |
Correct |
1 ms |
6492 KB |
n = 16 |
43 |
Correct |
1 ms |
6492 KB |
n = 16 |
44 |
Correct |
1 ms |
6492 KB |
n = 9 |
45 |
Correct |
1 ms |
6556 KB |
n = 15 |
46 |
Correct |
1 ms |
6492 KB |
n = 16 |
47 |
Correct |
1 ms |
6592 KB |
n = 16 |
48 |
Correct |
1 ms |
6492 KB |
n = 16 |
49 |
Runtime error |
211 ms |
72024 KB |
Execution killed with signal 11 |
50 |
Halted |
0 ms |
0 KB |
- |