Submission #997180

#	Time	Username	Problem	Language	Result	Execution time	Memory
997180		codefox	Dreaming (IOI13_dreaming)	C++14	Compilation error	0 ms	0 KiB

dreaming

#include <bits/stdc++.h>

using namespace std;

vector<int> depth;
vector<vector<pii>> graph;
vector<int> vis;
vector<int> vis2;
vector<int> nums;

void dfs(int i, int d)
{
	if(vis[i]) return;
	vis[i] = 1;
	nums.push_back(i);
	depth[i] = d;
	for (pii ele:graph[i]) dfs(ele.second, ele.first+d);
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]);
{
	depth.assign(n, 1e9);
	graph.assign(n, vector<pii>());
	vis.assign(n, 0);
	vis2.assign(n, 0);
	vector<int> ind(n, 0);
	for (int i = 0; i < M; i++)
	{
		graph[A[i]].push_back({B[i], T[i]});
		graph[B[i]].push_back({A[i], T[i]});
		ind[A[i]]++;
		ind[B[i]]++;
	}
	int sol = 0;
	vector<int> nodes;
	for (int i = 0; i < N; i++)
	{
		if (vis[i]) continue;
		nums.clear();
		dfs(i);
		int mx = 0;
		priority_queue<pii, vector<pii>, greater<pii>> pq;
		for (int ele:nums) if (ind[ele]==1) pq.push({0, ele});
		while(pq.size());
		{
			int j, d;
			tie(d, j) = pq.top();
			pq.pop();
			if (vis2[j]) continue;
			vis2[j] = 1;
			mx = max(mx, d);
			for (pii ele:graph[j])
			{	
				pq.push({d+ele.second, ele.first});
			}
		}
		int mmx = 0;
		int emx = 0;
		for (int ele:nums) 
		{
			if (depth[ele]>mmx)
			{
				mmx = depth[ele];
				emx = ele;	
			}
			vis[ele] = 0;
		}
		dfs(emx, 0);
		for (int ele:nums) 
		{
			mmx = max(mmx, emx);
		}

		nodes.push_back(mx);
		sol = max(sol, mmx);
	}
	sort(nodes.begin(), nodes.end());
	if (nodes.size()==2) sol = max(sol, nodes[0]+nodes[1]);
	else if (nodes.size()>2) sol = max(sol, nodes[0]+nodes[nodes.size()-2]+nodes.back());
	return sol;
}

Compilation message (stderr)

dreaming.cpp:6:15: error: 'pii' was not declared in this scope
    6 | vector<vector<pii>> graph;
      |               ^~~
dreaming.cpp:6:15: error: template argument 1 is invalid
dreaming.cpp:6:15: error: template argument 2 is invalid
dreaming.cpp:6:18: error: template argument 1 is invalid
    6 | vector<vector<pii>> graph;
      |                  ^~
dreaming.cpp:6:18: error: template argument 2 is invalid
dreaming.cpp: In function 'void dfs(int, int)':
dreaming.cpp:17:7: error: 'pii' was not declared in this scope
   17 |  for (pii ele:graph[i]) dfs(ele.second, ele.first+d);
      |       ^~~
dreaming.cpp:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
dreaming.cpp:17:54: error: expected ';' before '}' token
   17 |  for (pii ele:graph[i]) dfs(ele.second, ele.first+d);
      |                                                      ^
      |                                                      ;
   18 | }
      | ~                                                     
dreaming.cpp:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
dreaming.cpp:17:54: error: expected ')' before '}' token
   17 |  for (pii ele:graph[i]) dfs(ele.second, ele.first+d);
      |      ~                                               ^
      |                                                      )
   18 | }
      | ~                                                     
dreaming.cpp:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
dreaming.cpp: At global scope:
dreaming.cpp:21:1: error: expected unqualified-id before '{' token
   21 | {
      | ^