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Submission #503207

# Submission time Handle Problem Language Result Execution time Memory
503207 2022-01-07T13:40:51 Z WongChun1234 Stations (IOI20_stations) C++14
0 / 100
 902 ms 656 KB 
#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;

int ret[1050],sz[1050];
vector<int> adj[1050];
void calcsze(int id,int par=-1){
	sz[id]=1;
	for (int i:adj[id]){
		if (i==par) continue;
		calcsze(i,id);
		sz[id]+=sz[i];
	}
}
void dfs(int id,int par,int l,int r,bool bck){
	if (bck) ret[id]=r;
	else ret[id]=l;
	int curr=l+(!bck);
	for (int i:adj[id]){
		if (i==par) continue;
		dfs(i,id,curr,curr+sz[i]-1,!bck);
		curr+=sz[i];
	}
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	for (int i=0;i<n;i++) adj[i].clear();
	for (int i=0;i<n-1;i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	calcsze(0);
	dfs(0,-1,0,n-1,0);
	for (int i = 0; i < n; i++) {
		labels[i] = ret[i];
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	sort(c.begin(),c.end());
	if (c[0]<s){
		//current one is back
		for (int i=1;i<(int)c.size();i++){
			if (t<c[i]) return c[i-1];
		}
		if (t<s) return c.back();
		return c[0];
	}else{
		//current one is front
		for (int i:c) if (t<=i) return i;
		return c.back();
	}
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 458 ms 632 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 476 ms 492 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 513 ms 656 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 902 ms 400 KB Output is correct
2 Correct 700 ms 520 KB Output is correct
3 Incorrect 551 ms 492 KB Wrong query response.
4 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 535 ms 620 KB Wrong query response.
2 Halted 0 ms 0 KB -