Submission #432733

#	Time	Username	Problem	Language	Result	Execution time	Memory
432733		A_D	Stations (IOI20_stations)	C++14	0 / 100	3147 ms	2097156 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> ret;
vector<vector<int>> g;
vector<bool> vis;
int in=0;
int out=0;
void dfs(int u,int p)
{
    //if(vis[u])return;
    vis[u]=1;
    ret[u]+=in++;
    for(auto x:g[u]){
        if(x==p)continue;
        dfs(x,u);
    }
    int h=(out<<10);
    out++;
    ret[u]+=h;
}
vector<int> label(int n, int k,vector<int> u,vector<int> v){
    vis.resize(n);
    g.resize(n);
	ret.resize(n);
	for(int i=0;i<n-1;i++){
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
	}
	dfs(0,0);

	return ret;
}

int find_next_station(int s, int t,vector<int> c){
    int n=c.size();
    int inn = t%1024;
    int outt = (t>>(10));
//    cout<<inn<<" "<<outt<<endl;
    vector<int> in;
    vector<int> out;
    for(int i=0;i<n;i++){
        in.push_back(c[i]%1024);
        out.push_back((c[i]>>(10)));
  //     cout<<in[i]<<" "<<out[i]<<" "<<c[i]<<endl;
    }
    int mx=-1;
    for(int i=0;i<n;i++){
        mx=max(mx,c[i]);
    }
    for(int i=0;i<n;i++){
        if(mx==c[i])continue;
        if(in[i]<=inn&&outt<=out[i])return c[i];
    }
    return mx;
}

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