oj.uz

답안 #205978

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
205978 2020-03-01T13:56:03 Z HungAnhGoldIBO2020 Roller Coaster Railroad (IOI16_railroad) C++14
100 / 100
 314 ms 25936 KB 
#include<bits/stdc++.h>
#include "railroad.h"
using namespace std;
const long long N=4e5+2;
const long long inf=1e9+7;
vector<long long> coor;
long long head[N],cnt[N];
priority_queue<pair<long long,pair<long long,long long> > > lis;
long long findd(long long x){
	if(head[x]<0){
		return x;
	}
	long long y=findd(head[x]);
	head[x]=y;
	return y;
}
void unionn(long long x,long long y){
	x=findd(x),y=findd(y);
	head[x]+=head[y];
	head[y]=x;
}
bool samee(long long x,long long y){
	return findd(x)==findd(y);
}
long long plan_roller_coaster(vector<int> s, vector<int> t)
{
	s.push_back(inf);
	t.push_back(1);
	long long n=s.size(),i,j,k,l,r,ans=0;
	for(i=0;i<n;i++){
		coor.push_back(s[i]);
		coor.push_back(t[i]);
	}
	sort(coor.begin(),coor.end());
	coor.erase(unique(coor.begin(),coor.end()),coor.end());
	for(i=0;i<(long long)coor.size();i++){
		head[i+1]=-1;
	}
	for(i=0;i<n;i++){
		l=lower_bound(coor.begin(),coor.end(),s[i])-coor.begin()+1;
		r=lower_bound(coor.begin(),coor.end(),t[i])-coor.begin()+1;
		cnt[l]++;
		cnt[r]--;
		if(!samee(l,r)){
			unionn(l,r);
		}
	}
	for(i=1;i<=(long long)coor.size();i++){
		cnt[i]+=cnt[i-1];
		if(cnt[i]!=0){
			if(!samee(i,i+1)){
				unionn(i,i+1);
			}
			ans+=max(0ll,cnt[i])*(coor[i]-coor[i-1]);
		}
	}
	for(i=1;i<(long long)coor.size();i++){
		if(!samee(i,i+1)){
			lis.push({-(coor[i]-coor[i-1]),{i,i+1}});
		}
	}
	while(lis.size()){
		i=lis.top().first;
		j=lis.top().second.first;
		k=lis.top().second.second;
		lis.pop();
		if(samee(j,k)){
			continue;
		}
		unionn(j,k);	
		ans-=i;
	}
	return ans;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB n = 2
2 Correct 5 ms 376 KB n = 2
3 Correct 5 ms 376 KB n = 2
4 Correct 5 ms 376 KB n = 2
5 Correct 5 ms 376 KB n = 2
6 Correct 5 ms 376 KB n = 2
7 Correct 6 ms 400 KB n = 3
8 Correct 5 ms 376 KB n = 3
9 Correct 5 ms 376 KB n = 3
10 Correct 5 ms 376 KB n = 8
11 Correct 5 ms 376 KB n = 8
12 Correct 5 ms 376 KB n = 8
13 Correct 5 ms 376 KB n = 8
14 Correct 5 ms 376 KB n = 8
15 Correct 5 ms 280 KB n = 8
16 Correct 5 ms 300 KB n = 8
17 Correct 5 ms 376 KB n = 8
18 Correct 5 ms 376 KB n = 8
19 Correct 5 ms 376 KB n = 3
20 Correct 6 ms 376 KB n = 7
21 Correct 5 ms 376 KB n = 8
22 Correct 5 ms 376 KB n = 8
23 Correct 5 ms 376 KB n = 8
24 Correct 6 ms 376 KB n = 8
25 Correct 5 ms 376 KB n = 8

Subtask #2
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB n = 2
2 Correct 5 ms 376 KB n = 2
3 Correct 5 ms 376 KB n = 2
4 Correct 5 ms 376 KB n = 2
5 Correct 5 ms 376 KB n = 2
6 Correct 5 ms 376 KB n = 2
7 Correct 6 ms 400 KB n = 3
8 Correct 5 ms 376 KB n = 3
9 Correct 5 ms 376 KB n = 3
10 Correct 5 ms 376 KB n = 8
11 Correct 5 ms 376 KB n = 8
12 Correct 5 ms 376 KB n = 8
13 Correct 5 ms 376 KB n = 8
14 Correct 5 ms 376 KB n = 8
15 Correct 5 ms 280 KB n = 8
16 Correct 5 ms 300 KB n = 8
17 Correct 5 ms 376 KB n = 8
18 Correct 5 ms 376 KB n = 8
19 Correct 5 ms 376 KB n = 3
20 Correct 6 ms 376 KB n = 7
21 Correct 5 ms 376 KB n = 8
22 Correct 5 ms 376 KB n = 8
23 Correct 5 ms 376 KB n = 8
24 Correct 6 ms 376 KB n = 8
25 Correct 5 ms 376 KB n = 8
26 Correct 5 ms 376 KB n = 8
27 Correct 5 ms 376 KB n = 8
28 Correct 5 ms 376 KB n = 8
29 Correct 5 ms 376 KB n = 16
30 Correct 5 ms 376 KB n = 16
31 Correct 5 ms 376 KB n = 16
32 Correct 5 ms 376 KB n = 16
33 Correct 5 ms 376 KB n = 16
34 Correct 5 ms 376 KB n = 16
35 Correct 5 ms 376 KB n = 16
36 Correct 5 ms 372 KB n = 15
37 Correct 5 ms 376 KB n = 8
38 Correct 5 ms 376 KB n = 16
39 Correct 5 ms 376 KB n = 16
40 Correct 5 ms 376 KB n = 9
41 Correct 5 ms 376 KB n = 16
42 Correct 5 ms 376 KB n = 16
43 Correct 5 ms 376 KB n = 16
44 Correct 5 ms 504 KB n = 9
45 Correct 5 ms 376 KB n = 15
46 Correct 5 ms 376 KB n = 16
47 Correct 5 ms 376 KB n = 16
48 Correct 5 ms 376 KB n = 16

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 243 ms 13904 KB n = 199999
2 Correct 230 ms 13904 KB n = 199991
3 Correct 228 ms 14032 KB n = 199993
4 Correct 176 ms 10824 KB n = 152076
5 Correct 98 ms 6672 KB n = 93249
6 Correct 201 ms 12800 KB n = 199910
7 Correct 199 ms 13808 KB n = 199999
8 Correct 190 ms 12880 KB n = 199997
9 Correct 184 ms 12080 KB n = 171294
10 Correct 156 ms 9440 KB n = 140872
11 Correct 196 ms 12880 KB n = 199886
12 Correct 193 ms 13904 KB n = 199996
13 Correct 201 ms 13136 KB n = 200000
14 Correct 219 ms 15928 KB n = 199998
15 Correct 210 ms 15696 KB n = 200000
16 Correct 227 ms 15952 KB n = 199998
17 Correct 218 ms 13904 KB n = 200000
18 Correct 217 ms 13216 KB n = 190000
19 Correct 202 ms 12512 KB n = 177777
20 Correct 104 ms 7136 KB n = 100000
21 Correct 216 ms 13904 KB n = 200000
22 Correct 314 ms 22196 KB n = 200000
23 Correct 236 ms 13904 KB n = 200000

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB n = 2
2 Correct 5 ms 376 KB n = 2
3 Correct 5 ms 376 KB n = 2
4 Correct 5 ms 376 KB n = 2
5 Correct 5 ms 376 KB n = 2
6 Correct 5 ms 376 KB n = 2
7 Correct 6 ms 400 KB n = 3
8 Correct 5 ms 376 KB n = 3
9 Correct 5 ms 376 KB n = 3
10 Correct 5 ms 376 KB n = 8
11 Correct 5 ms 376 KB n = 8
12 Correct 5 ms 376 KB n = 8
13 Correct 5 ms 376 KB n = 8
14 Correct 5 ms 376 KB n = 8
15 Correct 5 ms 280 KB n = 8
16 Correct 5 ms 300 KB n = 8
17 Correct 5 ms 376 KB n = 8
18 Correct 5 ms 376 KB n = 8
19 Correct 5 ms 376 KB n = 3
20 Correct 6 ms 376 KB n = 7
21 Correct 5 ms 376 KB n = 8
22 Correct 5 ms 376 KB n = 8
23 Correct 5 ms 376 KB n = 8
24 Correct 6 ms 376 KB n = 8
25 Correct 5 ms 376 KB n = 8
26 Correct 5 ms 376 KB n = 8
27 Correct 5 ms 376 KB n = 8
28 Correct 5 ms 376 KB n = 8
29 Correct 5 ms 376 KB n = 16
30 Correct 5 ms 376 KB n = 16
31 Correct 5 ms 376 KB n = 16
32 Correct 5 ms 376 KB n = 16
33 Correct 5 ms 376 KB n = 16
34 Correct 5 ms 376 KB n = 16
35 Correct 5 ms 376 KB n = 16
36 Correct 5 ms 372 KB n = 15
37 Correct 5 ms 376 KB n = 8
38 Correct 5 ms 376 KB n = 16
39 Correct 5 ms 376 KB n = 16
40 Correct 5 ms 376 KB n = 9
41 Correct 5 ms 376 KB n = 16
42 Correct 5 ms 376 KB n = 16
43 Correct 5 ms 376 KB n = 16
44 Correct 5 ms 504 KB n = 9
45 Correct 5 ms 376 KB n = 15
46 Correct 5 ms 376 KB n = 16
47 Correct 5 ms 376 KB n = 16
48 Correct 5 ms 376 KB n = 16
49 Correct 243 ms 13904 KB n = 199999
50 Correct 230 ms 13904 KB n = 199991
51 Correct 228 ms 14032 KB n = 199993
52 Correct 176 ms 10824 KB n = 152076
53 Correct 98 ms 6672 KB n = 93249
54 Correct 201 ms 12800 KB n = 199910
55 Correct 199 ms 13808 KB n = 199999
56 Correct 190 ms 12880 KB n = 199997
57 Correct 184 ms 12080 KB n = 171294
58 Correct 156 ms 9440 KB n = 140872
59 Correct 196 ms 12880 KB n = 199886
60 Correct 193 ms 13904 KB n = 199996
61 Correct 201 ms 13136 KB n = 200000
62 Correct 219 ms 15928 KB n = 199998
63 Correct 210 ms 15696 KB n = 200000
64 Correct 227 ms 15952 KB n = 199998
65 Correct 218 ms 13904 KB n = 200000
66 Correct 217 ms 13216 KB n = 190000
67 Correct 202 ms 12512 KB n = 177777
68 Correct 104 ms 7136 KB n = 100000
69 Correct 216 ms 13904 KB n = 200000
70 Correct 314 ms 22196 KB n = 200000
71 Correct 236 ms 13904 KB n = 200000
72 Correct 224 ms 17720 KB n = 200000
73 Correct 227 ms 17868 KB n = 200000
74 Correct 214 ms 17744 KB n = 200000
75 Correct 210 ms 17744 KB n = 200000
76 Correct 223 ms 17744 KB n = 200000
77 Correct 186 ms 14672 KB n = 200000
78 Correct 242 ms 22992 KB n = 200000
79 Correct 205 ms 16336 KB n = 184307
80 Correct 79 ms 6680 KB n = 76040
81 Correct 196 ms 15696 KB n = 199981
82 Correct 194 ms 17104 KB n = 199994
83 Correct 194 ms 15952 KB n = 199996
84 Correct 204 ms 18896 KB n = 199998
85 Correct 208 ms 18788 KB n = 200000
86 Correct 222 ms 19408 KB n = 199998
87 Correct 215 ms 17744 KB n = 200000
88 Correct 224 ms 17872 KB n = 200000
89 Correct 211 ms 17744 KB n = 200000
90 Correct 212 ms 17744 KB n = 200000
91 Correct 307 ms 25936 KB n = 200000
92 Correct 226 ms 17744 KB n = 200000