Submission #835264

#	Time	Username	Problem	Language	Result	Execution time	Memory
835264		Liudas	Rail (IOI14_rail)	C++17	30 / 100	160 ms	512 KiB

rail

#include "rail.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "rail.h"
#include <set>
#include <vector>
#include <numeric>
#include <algorithm>
#include <iostream>
#include <map>
using namespace std;
void findLocation(int N, int first, int location[], int stype[])
{
    int lid = 0, rid = -1;
    vector<int> dist(N, 0);
    for(int i = 0; i < N; i ++){
        if(i == lid)continue;
        int temp = getDistance(lid, i);
        dist[i] = temp;
    }
    vector<int> order(N);
    iota(order.begin(), order.end(), 0);
    sort(order.begin(), order.end(), [&](int a, int b){return dist[a] < dist[b];});
    int d = dist[order[1]];
    rid = order[1];
    lid = order[0];
    stype[order[0]] = 1;
    stype[order[1]] = 2;
    location[order[0]] = first;
    location[order[1]] = first + d;
    int idx = -1;
    for(int i : order){
        idx ++;
        if(stype[i])continue;
        int md = 1e9, mid = 0;
        vector<int> distances(N);
        for(int j = 0; j < idx; j ++){
            int t = getDistance(order[j], i);
            distances[order[j]] = t;
            if(t < md){
                md = t;
                mid = order[j];
            }
        }
        if(stype[mid] == 2){
            stype[i] = 1;
            location[i] = location[rid] - distances[rid];
            if(location[lid] > location[i]){
                lid = i;
            } 
        }
        else{
            stype[i] = 2;
            location[i] = location[lid] + distances[lid];
            if(location[rid] < location[i]){
                rid = i;
            }
        }
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 22 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44