Submission #1175973

#	Time	Username	Problem	Language	Result	Execution time	Memory
1175973		adkjt	Stations (IOI20_stations)	C++20	5 / 100	304 ms	596 KiB

stations

#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
vector<int> g[1111];
int lab[1111],sz[1111];//,mn=0,mx=1000;
void dfs(int now,int p)
{
    for(auto x:g[now])
    {
        if(x==p) continue;
        //cout<<now<<' '<<x<<'\n';
        dfs(x,now);
        sz[now]+=sz[x];
    }
}
void dfs2(int now,int p,int mn,int mx,int t)
{
    int sumsz=0;
    for(auto x:g[now])
    {
        if(x==p) continue;
        if(t)
            dfs2(x,now,sumsz+mn,sumsz+mn+sz[x]-1,t==0);
        else
            dfs2(x,now,mn+1+sumsz,mn+sumsz+sz[x],t==0);
        sumsz+=sz[x];
    }
    if(t)
        lab[now]=mx;
    else lab[now]=mn;
}
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++) g[i].clear();
	for(int i=0;i<n-1;i++){
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
	}
	for(int i=0;i<=n;i++)
        sz[i]=1;
    dfs(0,-1);
    dfs2(0,-1,0,k,0);
    for(int i=0;i<n;i++)
        labels[i]=lab[i];//,cout<<lab[i]<<' ';
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
    if(s<c[0])
    {
        if(t<s||t>=c[c.size()-1]) return c[c.size()-1];
        for(int i=0;i<c.size()-1;i++)
        {
            if(t<=c[i]) return c[i];
        }
        return c[c.size()-1];
    }
    else
    {
        if(t>s||t<=c[0]) return c[0];
        for(int i=1;i<c.size();i++)
            if(t>=c[i]) return c[i];
            return c[0];
    }

}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61