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답안 #897399

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
897399 2024-01-03T03:48:12 Z Faisal_Saqib 꿈 (IOI13_dreaming) C++17
47 / 100
 1000 ms 20112 KB 
#include "dreaming.h"
#include <iostream>
#include <vector>
using namespace std; 
const long long N=1e5+200;
vector<pair<long long,long long>> ma[N];
bool vis[N];
bool tp=0;
long long dp_down[N][2];
long long dp_up[N];
long long mxx[N];
long long n,m,l;
void dfs_down(long long x,long long p=-1)
{
	vis[x]=1;
	dp_down[x][0]=dp_down[x][1]=0;
	for(auto [w,y]:ma[x])
	{
		if(y!=p)
		{
			dfs_down(y,x);
			long long cur=dp_down[y][0]+w;
			if(dp_down[x][0]<cur)
			{
				dp_down[x][1]=dp_down[x][0];
				dp_down[x][0]=cur;
			}
			else if(dp_down[x][1]<cur)
			{
				dp_down[x][1]=cur;
			}
		}
	}
	// if(tp)
	// {
	// 	cout<<"For "<<x<<' '<<p<<endl;
	// 	cout<<dp_down[x][0]<<' '<<dp_down[x][1]<<endl;
	// }
}
long long vertex=-1;
long long dist=1e18;
long long cp=-1;
void fill()
{
	for(int i=0;i<n;i++)
		dp_up[i]=0;
}
void dfs_up(long long x,long long p=-1)
{
	mxx[x]=max(dp_up[x],dp_down[x][0]);
	cp=max(cp,mxx[x]);
	// if(tp)
	// {
	// 	cout<<"For "<<x<<' '<<mxx[x]<<endl;
	// }
	if(mxx[x]<dist)
	{
		dist=mxx[x];
		vertex=x;
	}
	for(auto [w,y]:ma[x])
	{
		if(y!=p)
		{
			dp_up[y]=dp_up[x]+w;
			if(dp_down[x][0]==(dp_down[y][0]+w))
				dp_up[y]=max(dp_up[y],dp_down[x][1]+w);
			else
				dp_up[y]=max(dp_up[y],dp_down[x][0]+w);
			dfs_up(y,x);
		}
	}
}
int travelTime(int N, int M, int L, int a[], int b[], int t[])
{
	n=N;
	m=M;
	l=L;
	for(int i=0;i<m;i++)
	{
		ma[a[i]].push_back({t[i],b[i]});
		ma[b[i]].push_back({t[i],a[i]});
	}
	for(int i=0;i<n;i++)
	{
		if(!vis[i]){
			long long bv=vertex;
			long long bd=dist;
			vertex=-1;
			dist=1e18;
			dfs_down(i);
			dfs_up(i);
			if(bv!=-1)
			{
				ma[bv].push_back({l,vertex});
				ma[vertex].push_back({l,bv});
				long long stp=vertex;
				vertex=-1;
				dist=1e18;
				dfs_down(stp);
				fill();
				dfs_up(stp);
			}
		}
	}
	cp=-1;
	tp=1;
	dfs_down(0);
	fill();
	dfs_up(0);
	// cout<<"adj\n";
	// for(int i=0;i<n;i++)
	// {
	// 	cout<<"For "<<i<<' ';
	// 	for(auto [j,p]:ma[i]){
	// 		cout<<p<<' ';
	// 	}
	// 	cout<<endl;
	// 	cout<<"a\n";
	// }
	return cp;
}

Compilation message

dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:88:14: warning: unused variable 'bd' [-Wunused-variable]
   88 |    long long bd=dist;
      |              ^~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 15196 KB Output is correct
2 Correct 39 ms 14928 KB Output is correct
3 Correct 29 ms 13912 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7772 KB Output is correct
6 Correct 11 ms 9052 KB Output is correct
7 Correct 1 ms 7000 KB Output is correct
8 Correct 23 ms 10588 KB Output is correct
9 Correct 28 ms 12812 KB Output is correct
10 Correct 2 ms 7004 KB Output is correct
11 Correct 37 ms 13396 KB Output is correct
12 Correct 44 ms 14428 KB Output is correct
13 Correct 1 ms 7004 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 7004 KB Output is correct
2 Correct 1 ms 7012 KB Output is correct
3 Correct 1 ms 7004 KB Output is correct
4 Correct 2 ms 7004 KB Output is correct
5 Correct 1 ms 7004 KB Output is correct
6 Correct 2 ms 7000 KB Output is correct
7 Correct 1 ms 7004 KB Output is correct
8 Correct 1 ms 7004 KB Output is correct
9 Correct 1 ms 7256 KB Output is correct
10 Correct 1 ms 7004 KB Output is correct
11 Correct 1 ms 7004 KB Output is correct
12 Correct 1 ms 7004 KB Output is correct
13 Correct 1 ms 7004 KB Output is correct
14 Correct 1 ms 7004 KB Output is correct
15 Correct 1 ms 7004 KB Output is correct
16 Correct 2 ms 7004 KB Output is correct
17 Correct 1 ms 7004 KB Output is correct
18 Correct 1 ms 7004 KB Output is correct
19 Correct 1 ms 7004 KB Output is correct
20 Correct 1 ms 7004 KB Output is correct
21 Correct 1 ms 7004 KB Output is correct
22 Correct 1 ms 7000 KB Output is correct
23 Correct 1 ms 7000 KB Output is correct
24 Correct 1 ms 7004 KB Output is correct
25 Correct 1 ms 7004 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 15196 KB Output is correct
2 Correct 39 ms 14928 KB Output is correct
3 Correct 29 ms 13912 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7772 KB Output is correct
6 Correct 11 ms 9052 KB Output is correct
7 Correct 1 ms 7000 KB Output is correct
8 Correct 23 ms 10588 KB Output is correct
9 Correct 28 ms 12812 KB Output is correct
10 Correct 2 ms 7004 KB Output is correct
11 Correct 37 ms 13396 KB Output is correct
12 Correct 44 ms 14428 KB Output is correct
13 Correct 1 ms 7004 KB Output is correct
14 Correct 1 ms 7004 KB Output is correct
15 Correct 1 ms 7012 KB Output is correct
16 Correct 1 ms 7004 KB Output is correct
17 Correct 2 ms 7004 KB Output is correct
18 Correct 1 ms 7004 KB Output is correct
19 Correct 2 ms 7000 KB Output is correct
20 Correct 1 ms 7004 KB Output is correct
21 Correct 1 ms 7004 KB Output is correct
22 Correct 1 ms 7256 KB Output is correct
23 Correct 1 ms 7004 KB Output is correct
24 Correct 1 ms 7004 KB Output is correct
25 Correct 1 ms 7004 KB Output is correct
26 Correct 1 ms 7004 KB Output is correct
27 Correct 1 ms 7004 KB Output is correct
28 Correct 1 ms 7004 KB Output is correct
29 Correct 2 ms 7004 KB Output is correct
30 Correct 1 ms 7004 KB Output is correct
31 Correct 1 ms 7004 KB Output is correct
32 Correct 1 ms 7004 KB Output is correct
33 Correct 1 ms 7004 KB Output is correct
34 Correct 1 ms 7004 KB Output is correct
35 Correct 1 ms 7000 KB Output is correct
36 Correct 1 ms 7000 KB Output is correct
37 Correct 1 ms 7004 KB Output is correct
38 Correct 1 ms 7004 KB Output is correct
39 Correct 43 ms 15436 KB Output is correct
40 Correct 40 ms 15104 KB Output is correct
41 Correct 26 ms 13916 KB Output is correct
42 Correct 6 ms 8028 KB Output is correct
43 Correct 1 ms 7004 KB Output is correct
44 Correct 1 ms 7004 KB Output is correct
45 Correct 1 ms 7004 KB Output is correct
46 Correct 1 ms 7004 KB Output is correct
47 Correct 1 ms 7004 KB Output is correct
48 Correct 1 ms 7004 KB Output is correct
49 Correct 1 ms 7004 KB Output is correct
50 Correct 1 ms 7004 KB Output is correct
51 Correct 1 ms 7004 KB Output is correct
52 Correct 1 ms 7004 KB Output is correct
53 Correct 1 ms 7004 KB Output is correct
54 Correct 1 ms 7004 KB Output is correct
55 Correct 2 ms 7004 KB Output is correct
56 Correct 1 ms 7000 KB Output is correct
57 Correct 54 ms 13080 KB Output is correct
58 Correct 53 ms 13068 KB Output is correct
59 Correct 70 ms 12624 KB Output is correct
60 Correct 54 ms 12624 KB Output is correct
61 Correct 67 ms 12788 KB Output is correct
62 Correct 52 ms 12484 KB Output is correct
63 Correct 47 ms 12124 KB Output is correct
64 Correct 46 ms 12172 KB Output is correct
65 Correct 49 ms 12124 KB Output is correct
66 Correct 47 ms 12332 KB Output is correct
67 Correct 66 ms 12880 KB Output is correct
68 Correct 53 ms 12636 KB Output is correct
69 Correct 57 ms 12636 KB Output is correct
70 Correct 59 ms 12804 KB Output is correct
71 Correct 1 ms 7000 KB Output is correct
72 Correct 2 ms 7004 KB Output is correct
73 Correct 2 ms 7004 KB Output is correct
74 Correct 2 ms 7004 KB Output is correct
75 Correct 2 ms 7256 KB Output is correct
76 Correct 2 ms 7216 KB Output is correct
77 Correct 2 ms 7000 KB Output is correct
78 Correct 2 ms 7004 KB Output is correct
79 Correct 2 ms 7004 KB Output is correct
80 Correct 56 ms 12804 KB Output is correct
81 Correct 70 ms 12808 KB Output is correct
82 Correct 52 ms 12376 KB Output is correct
83 Correct 49 ms 12368 KB Output is correct
84 Correct 2 ms 7000 KB Output is correct
85 Correct 2 ms 7004 KB Output is correct
86 Correct 2 ms 7004 KB Output is correct
87 Correct 2 ms 7004 KB Output is correct
88 Correct 2 ms 7000 KB Output is correct
89 Correct 2 ms 7004 KB Output is correct
90 Correct 2 ms 7172 KB Output is correct
91 Correct 2 ms 7004 KB Output is correct
92 Correct 2 ms 7000 KB Output is correct
93 Correct 2 ms 7004 KB Output is correct
94 Correct 1 ms 7004 KB Output is correct
95 Correct 1 ms 7004 KB Output is correct
96 Correct 1 ms 7004 KB Output is correct
97 Correct 1 ms 7004 KB Output is correct
98 Correct 1 ms 7004 KB Output is correct
99 Correct 1 ms 7004 KB Output is correct
100 Correct 1 ms 7004 KB Output is correct
101 Correct 1 ms 7004 KB Output is correct
102 Correct 1 ms 7004 KB Output is correct
103 Correct 1 ms 7000 KB Output is correct
104 Correct 6 ms 7772 KB Output is correct
105 Correct 11 ms 8848 KB Output is correct
106 Correct 1 ms 7004 KB Output is correct
107 Correct 22 ms 10808 KB Output is correct
108 Correct 36 ms 12880 KB Output is correct
109 Correct 1 ms 7004 KB Output is correct
110 Correct 38 ms 13260 KB Output is correct
111 Correct 48 ms 14380 KB Output is correct
112 Correct 1 ms 7004 KB Output is correct
113 Correct 88 ms 20112 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1064 ms 9436 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 7004 KB Output is correct
2 Correct 1 ms 7012 KB Output is correct
3 Correct 1 ms 7004 KB Output is correct
4 Correct 2 ms 7004 KB Output is correct
5 Correct 1 ms 7004 KB Output is correct
6 Correct 2 ms 7000 KB Output is correct
7 Correct 1 ms 7004 KB Output is correct
8 Correct 1 ms 7004 KB Output is correct
9 Correct 1 ms 7256 KB Output is correct
10 Correct 1 ms 7004 KB Output is correct
11 Correct 1 ms 7004 KB Output is correct
12 Correct 1 ms 7004 KB Output is correct
13 Correct 1 ms 7004 KB Output is correct
14 Correct 1 ms 7004 KB Output is correct
15 Correct 1 ms 7004 KB Output is correct
16 Correct 2 ms 7004 KB Output is correct
17 Correct 1 ms 7004 KB Output is correct
18 Correct 1 ms 7004 KB Output is correct
19 Correct 1 ms 7004 KB Output is correct
20 Correct 1 ms 7004 KB Output is correct
21 Correct 1 ms 7004 KB Output is correct
22 Correct 1 ms 7000 KB Output is correct
23 Correct 1 ms 7000 KB Output is correct
24 Correct 1 ms 7004 KB Output is correct
25 Correct 1 ms 7004 KB Output is correct
26 Correct 3 ms 7004 KB Output is correct
27 Correct 8 ms 7028 KB Output is correct
28 Correct 19 ms 7188 KB Output is correct
29 Correct 3 ms 7004 KB Output is correct
30 Correct 8 ms 7000 KB Output is correct
31 Correct 16 ms 7196 KB Output is correct
32 Correct 3 ms 7004 KB Output is correct
33 Incorrect 7 ms 7140 KB Output isn't correct
34 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 15196 KB Output is correct
2 Correct 39 ms 14928 KB Output is correct
3 Correct 29 ms 13912 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7772 KB Output is correct
6 Correct 11 ms 9052 KB Output is correct
7 Correct 1 ms 7000 KB Output is correct
8 Correct 23 ms 10588 KB Output is correct
9 Correct 28 ms 12812 KB Output is correct
10 Correct 2 ms 7004 KB Output is correct
11 Correct 37 ms 13396 KB Output is correct
12 Correct 44 ms 14428 KB Output is correct
13 Correct 1 ms 7004 KB Output is correct
14 Correct 1 ms 7004 KB Output is correct
15 Correct 1 ms 7012 KB Output is correct
16 Correct 1 ms 7004 KB Output is correct
17 Correct 2 ms 7004 KB Output is correct
18 Correct 1 ms 7004 KB Output is correct
19 Correct 2 ms 7000 KB Output is correct
20 Correct 1 ms 7004 KB Output is correct
21 Correct 1 ms 7004 KB Output is correct
22 Correct 1 ms 7256 KB Output is correct
23 Correct 1 ms 7004 KB Output is correct
24 Correct 1 ms 7004 KB Output is correct
25 Correct 1 ms 7004 KB Output is correct
26 Correct 1 ms 7004 KB Output is correct
27 Correct 1 ms 7004 KB Output is correct
28 Correct 1 ms 7004 KB Output is correct
29 Correct 2 ms 7004 KB Output is correct
30 Correct 1 ms 7004 KB Output is correct
31 Correct 1 ms 7004 KB Output is correct
32 Correct 1 ms 7004 KB Output is correct
33 Correct 1 ms 7004 KB Output is correct
34 Correct 1 ms 7004 KB Output is correct
35 Correct 1 ms 7000 KB Output is correct
36 Correct 1 ms 7000 KB Output is correct
37 Correct 1 ms 7004 KB Output is correct
38 Correct 1 ms 7004 KB Output is correct
39 Correct 43 ms 15436 KB Output is correct
40 Correct 40 ms 15104 KB Output is correct
41 Correct 26 ms 13916 KB Output is correct
42 Correct 6 ms 8028 KB Output is correct
43 Correct 1 ms 7004 KB Output is correct
44 Correct 1 ms 7004 KB Output is correct
45 Correct 1 ms 7004 KB Output is correct
46 Correct 1 ms 7004 KB Output is correct
47 Correct 1 ms 7004 KB Output is correct
48 Correct 1 ms 7004 KB Output is correct
49 Correct 1 ms 7004 KB Output is correct
50 Correct 1 ms 7004 KB Output is correct
51 Correct 1 ms 7004 KB Output is correct
52 Correct 1 ms 7004 KB Output is correct
53 Correct 1 ms 7004 KB Output is correct
54 Correct 1 ms 7004 KB Output is correct
55 Correct 2 ms 7004 KB Output is correct
56 Correct 1 ms 7000 KB Output is correct
57 Correct 54 ms 13080 KB Output is correct
58 Correct 53 ms 13068 KB Output is correct
59 Correct 70 ms 12624 KB Output is correct
60 Correct 54 ms 12624 KB Output is correct
61 Correct 67 ms 12788 KB Output is correct
62 Correct 52 ms 12484 KB Output is correct
63 Correct 47 ms 12124 KB Output is correct
64 Correct 46 ms 12172 KB Output is correct
65 Correct 49 ms 12124 KB Output is correct
66 Correct 47 ms 12332 KB Output is correct
67 Correct 66 ms 12880 KB Output is correct
68 Correct 53 ms 12636 KB Output is correct
69 Correct 57 ms 12636 KB Output is correct
70 Correct 59 ms 12804 KB Output is correct
71 Correct 1 ms 7000 KB Output is correct
72 Correct 2 ms 7004 KB Output is correct
73 Correct 2 ms 7004 KB Output is correct
74 Correct 2 ms 7004 KB Output is correct
75 Correct 2 ms 7256 KB Output is correct
76 Correct 2 ms 7216 KB Output is correct
77 Correct 2 ms 7000 KB Output is correct
78 Correct 2 ms 7004 KB Output is correct
79 Correct 2 ms 7004 KB Output is correct
80 Correct 56 ms 12804 KB Output is correct
81 Correct 70 ms 12808 KB Output is correct
82 Correct 52 ms 12376 KB Output is correct
83 Correct 49 ms 12368 KB Output is correct
84 Correct 2 ms 7000 KB Output is correct
85 Correct 2 ms 7004 KB Output is correct
86 Correct 2 ms 7004 KB Output is correct
87 Correct 2 ms 7004 KB Output is correct
88 Correct 2 ms 7000 KB Output is correct
89 Correct 2 ms 7004 KB Output is correct
90 Correct 2 ms 7172 KB Output is correct
91 Correct 2 ms 7004 KB Output is correct
92 Correct 2 ms 7000 KB Output is correct
93 Correct 2 ms 7004 KB Output is correct
94 Correct 1 ms 7004 KB Output is correct
95 Correct 1 ms 7004 KB Output is correct
96 Correct 1 ms 7004 KB Output is correct
97 Correct 1 ms 7004 KB Output is correct
98 Correct 1 ms 7004 KB Output is correct
99 Correct 1 ms 7004 KB Output is correct
100 Correct 1 ms 7004 KB Output is correct
101 Correct 1 ms 7004 KB Output is correct
102 Correct 1 ms 7004 KB Output is correct
103 Correct 1 ms 7000 KB Output is correct
104 Correct 6 ms 7772 KB Output is correct
105 Correct 11 ms 8848 KB Output is correct
106 Correct 1 ms 7004 KB Output is correct
107 Correct 22 ms 10808 KB Output is correct
108 Correct 36 ms 12880 KB Output is correct
109 Correct 1 ms 7004 KB Output is correct
110 Correct 38 ms 13260 KB Output is correct
111 Correct 48 ms 14380 KB Output is correct
112 Correct 1 ms 7004 KB Output is correct
113 Correct 88 ms 20112 KB Output is correct
114 Execution timed out 1064 ms 9436 KB Time limit exceeded
115 Halted 0 ms 0 KB -