Platformer

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//package kilo.v2.t3;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.TreeMap;
import java.util.TreeSet;

/**
 *
 * @author asjuvone
 */
public class KILOV2T3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        IO io = new IO();
        int n = io.nextInt();
        int q = io.nextInt();
        int w = io.nextInt();
        int k = io.nextInt();
        int[] juomat = new int[n+1];
        int[] juomienArvot = new int[n+1];
        for (int i=1; i<=n; i++) {
            if (io.nextInt() == 0) juomat[i] = -1;
            else {
                juomat[i] = io.nextInt(); // x-koordinaatti juomalle tasolla i
                juomienArvot[i] = io.nextInt();
            }
        }
        
        TreeMap<Integer, TreeSet<Integer>> paikat = new TreeMap<>();
        TreeSet<Integer> lista = new TreeSet<>();
        lista.add(q);
        paikat.put(w, lista);
        for (int kerros=1; kerros<n; kerros++) {
            Iterator<Integer> it = paikat.descendingKeySet().iterator();
            int kuolemaRaja = (kerros-1) * k;
            int parasReittiJuomalle = kuolemaRaja+1;
            while (it.hasNext()) {
                int v = it.next();
                if (v <= k) break;
                
                Integer x = paikat.get(v).floor(juomat[kerros]);
                if (x != null) {
                    int vahennys = Math.abs(juomat[kerros] - x);
                    int lisays = juomienArvot[kerros];
                    int nykReittiJuomalle = v - vahennys + lisays;
                    if (nykReittiJuomalle > parasReittiJuomalle) {
                        parasReittiJuomalle = nykReittiJuomalle;
                        kuolemaRaja = parasReittiJuomalle;
                    }
                }
                x = paikat.get(v).ceiling(juomat[kerros]);
                if (x != null) {
                    int vahennys = Math.abs(juomat[kerros] - x);
                    int lisays = juomienArvot[kerros];
                    int nykReittiJuomalle = v - vahennys + lisays;
                    if (nykReittiJuomalle > parasReittiJuomalle) {
                        parasReittiJuomalle = nykReittiJuomalle;
                        kuolemaRaja = parasReittiJuomalle;
                    }
                }
            }
            TreeSet<Integer> uusLista = paikat.get(parasReittiJuomalle);
            if (uusLista == null) {
                uusLista = new TreeSet<Integer>();
                paikat.put(parasReittiJuomalle, uusLista);
            }
            uusLista.add(juomat[kerros]);
        }
        if (paikat.lastKey() > (k*(n-1))) System.out.println("10-4");
        else System.out.println("QAQ");
    }
    
}

class Paikka implements Comparable<Paikka> {
    List<Integer> xLista;
    int v;

    public Paikka(List<Integer> xLista, int v) {
        this.xLista = xLista;
        this.v = v;
    }


    @Override
    public int compareTo(Paikka o) {
        return o.v - this.v;
    }

    @Override
    public boolean equals(Object obj) {
        Paikka toinen = (Paikka) (obj);
        return toinen.v == this.v;
    }
    
    
    
    
}

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