oj.uz

답안 #545296

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
545296 2022-04-04T08:08:41 Z benson1029 꿈 (IOI13_dreaming) C++14
18 / 100
 53 ms 13260 KB 
#include "dreaming.h"
#include<bits/stdc++.h>
using namespace std; 

vector< pair<int,int> > edg[100005];
int vis[100005];
int bck[100005], dis[100005];
int mxdis = -1, mxdisnode = 0;
vector<int> v;

void dfs(int x, int p, int d) {
	vis[x] = 1;
	if(d>mxdis) {
		mxdis = d; mxdisnode = x;
	}
	for(auto i:edg[x]) {
		if(i.first!=p) {
			bck[i.first] = x;
			dis[i.first] = i.second;
			dfs(i.first, x, d+i.second);
		}
	}
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    for(int i=0; i<M; i++) {
    	edg[A[i]].push_back({B[i],T[i]});
    	edg[B[i]].push_back({A[i],T[i]});
	}
	int ans = 0;
	for(int i=0; i<N; i++) {
		if(vis[i]==0) {
			mxdis = -1;
			dfs(i, -1, 0);
			mxdis = -1;
			int orig = mxdisnode;
			dfs(orig, -1, 0);
			int ptr = mxdisnode;
			int cendis = mxdis, cnt = 0;
			while(ptr != orig) {
				cnt += dis[ptr]; 
				ptr = bck[ptr];
				if(max(cnt, mxdis - cnt) < cendis) {
					cendis = max(cnt, mxdis - cnt);
				}
			}
			v.push_back(cendis);
		}
	}
	sort(v.begin(), v.end());
	reverse(v.begin(), v.end());
	ans = v[0];
	if(v.size() >= 2) {
		ans = max(ans, v[0] + v[1] + L);
	}
	if(v.size() >= 3) {
		ans = max(ans, v[1] + v[2] + L*2);
	}
	return ans;
}

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 13260 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 13260 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 6444 KB Output is correct
2 Correct 18 ms 6484 KB Output is correct
3 Correct 18 ms 6904 KB Output is correct
4 Correct 21 ms 6868 KB Output is correct
5 Correct 26 ms 6884 KB Output is correct
6 Correct 21 ms 7384 KB Output is correct
7 Correct 20 ms 7036 KB Output is correct
8 Correct 19 ms 6752 KB Output is correct
9 Correct 19 ms 6744 KB Output is correct
10 Correct 24 ms 6928 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 5 ms 4432 KB Output is correct
13 Correct 5 ms 4432 KB Output is correct
14 Correct 5 ms 4432 KB Output is correct
15 Correct 5 ms 4432 KB Output is correct
16 Correct 6 ms 4452 KB Output is correct
17 Correct 5 ms 4048 KB Output is correct
18 Correct 5 ms 4432 KB Output is correct
19 Correct 5 ms 4432 KB Output is correct
20 Correct 2 ms 2660 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2704 KB Output is correct
23 Correct 5 ms 4452 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 53 ms 13260 KB Output isn't correct
2 Halted 0 ms 0 KB -