Submission #1016546

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016546		serkanrashid	Rail (IOI14_rail)	C++14	8 / 100	40 ms	604 KiB

rail

#include "rail.h"
#include <bits/stdc++.h>

using namespace std;

const int maxn = 5005;
set<int>used;

int n,loc[maxn],sty[maxn];
set<int>valid;

void nova_pochva(int i)
{
    int ogr = -1;
    int di = 1e9;
    if(sty[i]==1)
    {
        auto it = used.find(loc[i]);
        it++;

        if(it!=used.end()) ogr = (*it);
    }
    if(sty[i]==2)
    {
        auto it = used.find(loc[i]);
        if(it!=used.begin())
        {
            it--;
            ogr = (*it);
        }
    }
    if(ogr!=-1) di = abs(loc[i]-ogr);

    int minh = 0;
    int minch = 1e9;
    for(auto it = valid.begin(); it != valid.end(); it++)
    {
        int house = *it;
        int ch = getDistance(i,house);
        if(ch<minch)
        {
            minch = ch;
            minh = house;
        }
    }

    if(minch<di)
    {
        sty[minh] = 3 - sty[i];
        loc[minh] = loc[i];
        if(sty[i]==1) loc[minh] += minch;
        else loc[minh] -= minch;

        used.insert(loc[minh]);
        valid.erase(minh);
        nova_pochva(minh);
    }
    else nova_pochva(ogr);
}

void findLocation(int N, int first, int location[], int stype[])
{
    n = N;
    /*for(int i = 0; i < n; i++) loc[i] = -1;
    loc[0] = first;
    used.insert(first);
    sty[0] = 1;///type C
    for(int i = 1; i < n; i++) valid.insert(i);

    nova_pochva(0);

    for(int i = 0; i < n; i++) location[i] = loc[i];
    for(int i = 0; i < n; i++) stype[i] = sty[i];*/

    location[0] = first;
    stype[0] = 1;
    for(int i = 1; i < n; i++) stype[i] = 2;
    for(int i = 1; i < n; i++) location[i] = location[0] + getDistance(0,i);
}

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