답안 #29795 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
29795	2017-07-20T19:58:02 Z	kavun	꿈 (IOI13_dreaming)	C++14	32 / 100	76 ms	13048 KB

dreaming

#include "dreaming.h"
#include <bits/stdc++.h>
#define pb push_back

using namespace std;
typedef pair<int,int> ii;
vector <ii> adj[100010];
bool mk[100010];
int maxDist, ennd,ans;
ii p[100010];
vector <int> r;

void dfs(int v, int par, int len, int flag)
{
  if(flag)
    mk[v] = true;

  if(len > maxDist)
    {
      maxDist = len;
      ennd = v;
    }

  for(int i = 0; i < adj[v].size(); i++)
    {
      int u = adj[v][i].first;
      if(u == par) continue;
      int weight = adj[v][i].second;
      if(flag)
	p[u] = ii(v,weight);
      dfs(u,v,len+weight,flag);
    }
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
  for(int i = 0; i < M; i++)
    {
      adj[A[i]].pb(ii(B[i],T[i]));
      adj[B[i]].pb(ii(A[i],T[i]));
    }

  for(int i = 0; i < N; i++)
    {
      if(mk[i]) continue;
      maxDist = -1;
      dfs(i,i,0,0);
      maxDist = -1;
      int first = ennd;
      dfs(first,first,0,1);
      ans = max(ans,maxDist);
      int second = ennd;
      int halfdiam = maxDist / 2;
      int radius = 0;
      for(int ver = second; ver != first; ver = p[ver].first)
	{
	  if(radius + p[ver].second > halfdiam)
	    {
	      radius = max(radius,maxDist - radius);
	      break;
	    }
	  	  radius += p[ver].second;
	}
      r.pb(radius);
    }
    
  sort(r.begin(),r.end());
  reverse(r.begin(),r.end());

  if(r.size() == 1)
    return ans;
  if(r.size() == 2) 
    return max(ans,r[0] + r[1] + L);
  else 
    return max(ans,max(r[1] + r[2] + L + L,r[0] + r[1] + L));

}

Compilation message

dreaming.cpp: In function 'void dfs(int, int, int, int)':
dreaming.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < adj[v].size(); i++)
                  ~~^~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	13048 KB	Output is correct
2	Correct	57 ms	13048 KB	Output is correct
3	Correct	41 ms	9464 KB	Output is correct
4	Correct	10 ms	4224 KB	Output is correct
5	Correct	10 ms	3584 KB	Output is correct
6	Correct	17 ms	4992 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	28 ms	6264 KB	Output is correct
9	Correct	40 ms	7800 KB	Output is correct
10	Correct	5 ms	2816 KB	Output is correct
11	Correct	53 ms	9416 KB	Output is correct
12	Correct	76 ms	11128 KB	Output is correct
13	Correct	4 ms	2816 KB	Output is correct

Subtask #2
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	13048 KB	Output is correct
2	Correct	57 ms	13048 KB	Output is correct
3	Correct	41 ms	9464 KB	Output is correct
4	Correct	10 ms	4224 KB	Output is correct
5	Correct	10 ms	3584 KB	Output is correct
6	Correct	17 ms	4992 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	28 ms	6264 KB	Output is correct
9	Correct	40 ms	7800 KB	Output is correct
10	Correct	5 ms	2816 KB	Output is correct
11	Correct	53 ms	9416 KB	Output is correct
12	Correct	76 ms	11128 KB	Output is correct
13	Correct	4 ms	2816 KB	Output is correct
14	Correct	4 ms	2688 KB	Output is correct
15	Correct	4 ms	2644 KB	Output is correct
16	Correct	4 ms	2688 KB	Output is correct
17	Incorrect	4 ms	2764 KB	Output isn't correct
18	Halted	0 ms	0 KB	-

Subtask #3
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	13048 KB	Output is correct
2	Correct	57 ms	13048 KB	Output is correct
3	Correct	41 ms	9464 KB	Output is correct
4	Correct	10 ms	4224 KB	Output is correct
5	Correct	10 ms	3584 KB	Output is correct
6	Correct	17 ms	4992 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	28 ms	6264 KB	Output is correct
9	Correct	40 ms	7800 KB	Output is correct
10	Correct	5 ms	2816 KB	Output is correct
11	Correct	53 ms	9416 KB	Output is correct
12	Correct	76 ms	11128 KB	Output is correct
13	Correct	4 ms	2816 KB	Output is correct
14	Correct	4 ms	2688 KB	Output is correct
15	Correct	4 ms	2644 KB	Output is correct
16	Correct	4 ms	2688 KB	Output is correct
17	Incorrect	4 ms	2764 KB	Output isn't correct
18	Halted	0 ms	0 KB	-

Subtask #4
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	6136 KB	Output is correct
2	Correct	29 ms	6264 KB	Output is correct
3	Correct	44 ms	6212 KB	Output is correct
4	Correct	29 ms	6136 KB	Output is correct
5	Correct	34 ms	6264 KB	Output is correct
6	Correct	34 ms	6648 KB	Output is correct
7	Correct	30 ms	6392 KB	Output is correct
8	Correct	34 ms	6160 KB	Output is correct
9	Correct	34 ms	6132 KB	Output is correct
10	Correct	34 ms	6388 KB	Output is correct
11	Correct	4 ms	2688 KB	Output is correct
12	Correct	8 ms	3836 KB	Output is correct
13	Correct	8 ms	3964 KB	Output is correct
14	Correct	8 ms	3964 KB	Output is correct
15	Correct	7 ms	3960 KB	Output is correct
16	Correct	7 ms	3836 KB	Output is correct
17	Correct	7 ms	3580 KB	Output is correct
18	Correct	7 ms	3964 KB	Output is correct
19	Correct	7 ms	3836 KB	Output is correct
20	Correct	3 ms	2688 KB	Output is correct
21	Correct	3 ms	2688 KB	Output is correct
22	Correct	3 ms	2688 KB	Output is correct
23	Correct	7 ms	3836 KB	Output is correct

Subtask #5
0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	13048 KB	Output is correct
2	Correct	57 ms	13048 KB	Output is correct
3	Correct	41 ms	9464 KB	Output is correct
4	Correct	10 ms	4224 KB	Output is correct
5	Correct	10 ms	3584 KB	Output is correct
6	Correct	17 ms	4992 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	28 ms	6264 KB	Output is correct
9	Correct	40 ms	7800 KB	Output is correct
10	Correct	5 ms	2816 KB	Output is correct
11	Correct	53 ms	9416 KB	Output is correct
12	Correct	76 ms	11128 KB	Output is correct
13	Correct	4 ms	2816 KB	Output is correct
14	Correct	4 ms	2688 KB	Output is correct
15	Correct	5 ms	2788 KB	Output is correct
16	Correct	5 ms	2816 KB	Output is correct
17	Correct	4 ms	2688 KB	Output is correct
18	Correct	4 ms	2816 KB	Output is correct
19	Correct	5 ms	2816 KB	Output is correct
20	Correct	4 ms	2688 KB	Output is correct
21	Correct	5 ms	2788 KB	Output is correct
22	Correct	5 ms	2816 KB	Output is correct
23	Correct	4 ms	2688 KB	Output is correct
24	Correct	3 ms	2688 KB	Output is correct
25	Correct	4 ms	2688 KB	Output is correct
26	Correct	3 ms	2688 KB	Output is correct
27	Incorrect	4 ms	2688 KB	Output isn't correct
28	Halted	0 ms	0 KB	-

Subtask #6
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	59 ms	13048 KB	Output is correct
2	Correct	57 ms	13048 KB	Output is correct
3	Correct	41 ms	9464 KB	Output is correct
4	Correct	10 ms	4224 KB	Output is correct
5	Correct	10 ms	3584 KB	Output is correct
6	Correct	17 ms	4992 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	28 ms	6264 KB	Output is correct
9	Correct	40 ms	7800 KB	Output is correct
10	Correct	5 ms	2816 KB	Output is correct
11	Correct	53 ms	9416 KB	Output is correct
12	Correct	76 ms	11128 KB	Output is correct
13	Correct	4 ms	2816 KB	Output is correct
14	Correct	4 ms	2688 KB	Output is correct
15	Correct	4 ms	2644 KB	Output is correct
16	Correct	4 ms	2688 KB	Output is correct
17	Incorrect	4 ms	2764 KB	Output isn't correct
18	Halted	0 ms	0 KB	-

답안 #29795

Compilation message

Subtask #1 14.0 / 14.0

Subtask #2 0 / 10.0

Subtask #3 0 / 23.0

Subtask #4 18.0 / 18.0

Subtask #5 0 / 12.0

Subtask #6 0 / 23.0

Subtask #1
14.0 / 14.0

Subtask #2
0 / 10.0

Subtask #3
0 / 23.0

Subtask #4
18.0 / 18.0

Subtask #5
0 / 12.0

Subtask #6
0 / 23.0