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Submission #403644

# Submission time Handle Problem Language Result Execution time Memory
403644 2021-05-13T10:39:14 Z ritul_kr_singh Dreaming (IOI13_dreaming) C++17
0 / 100
 57 ms 11848 KB 
#include <bits/stdc++.h>
using namespace std;
#define sp << ' ' <<
#define nl << '\n'
#include "dreaming.h"

const int MAXN = 1e5, INF = 2e9;

vector<array<int, 2>> g[MAXN];
int a[MAXN], b, x, y;
bitset<MAXN> vis;

void dfs(int u, int d, int p = -1){
	vis[u] = 1;
	a[u] = max(a[u], d);
	if(d > x) x = d, y = u;
	if(d < 0) b = min(b, a[u]);
	for(auto &e : g[u]) if(e[0] != p) dfs(e[0], d < 0 ? d : d + e[1], u);
}

int travelTime(int n, int m, int L, int A[], int B[], int T[]){
	for(int i=0; i<m; ++i){
		g[A[i]].push_back({B[i], T[i]});
		g[B[i]].push_back({A[i], T[i]});
	}
	priority_queue<int> q;
	for(int i=0; i<n; ++i){
		if(vis[i]) continue;
		x = y = -1, b = INF;
		dfs(i, 0), dfs(y, 0), dfs(y, 0);
		dfs(i, -1);
		q.push(-b);
		while(q.size() > 3) q.pop();
	}
	int a3 = -q.top(); q.pop();
	int a2 = -q.top(); q.pop();
	if(n < 3) return L + a2 + a3;
	int a1 = -q.top(); q.pop();
	return max(a1 + a2 + L, a2 + a3 + L + L);
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 57 ms 11848 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 57 ms 11848 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 5692 KB Output is correct
2 Correct 22 ms 5760 KB Output is correct
3 Correct 21 ms 5708 KB Output is correct
4 Correct 22 ms 5728 KB Output is correct
5 Correct 22 ms 5668 KB Output is correct
6 Correct 25 ms 5968 KB Output is correct
7 Correct 25 ms 5844 KB Output is correct
8 Correct 28 ms 5708 KB Output is correct
9 Correct 26 ms 5700 KB Output is correct
10 Correct 25 ms 5888 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 7 ms 3020 KB Output is correct
13 Correct 6 ms 3020 KB Output is correct
14 Correct 6 ms 3020 KB Output is correct
15 Correct 6 ms 3020 KB Output is correct
16 Correct 6 ms 3020 KB Output is correct
17 Correct 6 ms 3020 KB Output is correct
18 Correct 7 ms 3048 KB Output is correct
19 Correct 6 ms 3020 KB Output is correct
20 Incorrect 2 ms 2636 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 2636 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 57 ms 11848 KB Output isn't correct
2 Halted 0 ms 0 KB -