Submission #819864

#	Time	Username	Problem	Language	Result	Execution time	Memory
819864		Marco_Escandon	Fountain Parks (IOI21_parks)	C++17	0 / 100	1 ms	328 KiB

parks

#include "parks.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll cad[7][200004]={ };
int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
	build({}, {}, {}, {});
        return 1;
    }
    ll n=x.size();
    for(int i=0; i<n; i++)
    {
        cad[x[i]][y[i]]=i+1;
    }
    n=200001;
    std::vector<int> u, v, a, b;
    ll pl=0;
    for(int i=2; i<n; i+=2)
    {
        if(cad[2][i]==0&&cad[4][i]==0&&cad[6][i]==0&&cad[2][i-2]!=0&&cad[4][i-2]!=0&&cad[6][i-2]!=0)
        {
            if(pl==1)
            {
                build(u, v, a, b);
                    return 0;
            }
            pl=1;
        }
        if(cad[2][i]!=0&&cad[2][i+2]!=0)
        {
            u.push_back(cad[2][i]-1);
            v.push_back(cad[2][i+2]-1);
            a.push_back(1);
            b.push_back(i+1);
        }
        if(cad[6][i]!=0&&cad[6][i+2]!=0)
        {
            u.push_back(cad[6][i]-1);
            v.push_back(cad[6][i+2]-1);
            a.push_back(7);
            b.push_back(i+1);
        }
    }
    for(int i=2; i<n; i+=2)
    {
        if(cad[4][i]!=0&&cad[4][i+2]==0)
        {
            if(cad[2][i]!=0)
            {
                u.push_back(cad[2][i]-1);
                v.push_back(cad[4][i]-1);
                a.push_back(3);
                b.push_back(i+1);
            }
            if(cad[6][i]!=0)
            {
                u.push_back(cad[4][i]-1);
                v.push_back(cad[6][i]-1);
                a.push_back(5);
                b.push_back(i+1);
            }
        }
        else if(cad[4][i]!=0&&cad[2][i+2]==0&&cad[2][i]!=0&&cad[6][i+2]==0&&cad[6][i]!=0)
        {
            u.push_back(cad[4][i]-1);
            v.push_back(cad[4][i+2]-1);
            a.push_back(3);
            b.push_back(i+1);

            u.push_back(cad[2][i]-1);
            v.push_back(cad[4][i]-1);
            a.push_back(3);
            b.push_back(i-1);


            u.push_back(cad[6][i]-1);
            v.push_back(cad[4][i]-1);
            a.push_back(5);
            b.push_back(i+1);
        }
        else if(cad[4][i]!=0&&cad[2][i+2]==0&&cad[2][i]!=0)
        {
            u.push_back(cad[4][i]-1);
            v.push_back(cad[4][i+2]-1);
            a.push_back(5);
            b.push_back(i+1);
            u.push_back(cad[2][i]);
            v.push_back(cad[4][i]);
            a.push_back(3);
            b.push_back(i+1);
        }
        else if(cad[4][i]!=0&&cad[6][i+2]==0&&cad[6][i]!=0)
        {
            u.push_back(cad[4][i]-1);
            v.push_back(cad[4][i+2]-1);
            a.push_back(3);
            b.push_back(i+1);
            u.push_back(cad[6][i]-1);
            v.push_back(cad[4][i]-1);
            a.push_back(5);
            b.push_back(i+1);
        }
        else if(cad[4][i]!=0&&cad[4][i+2]!=0)
        {
            u.push_back(cad[4][i]-1);
            v.push_back(cad[4][i+2]-1);
            a.push_back(5);
            b.push_back(i+1);
        }
    }
    /*for(int i=0; i<a.size(); i++)
    {
        cout<<u[i]<<" "<<v[i]<<" "<<a[i]<<" "<<b[i]<<"\n";
    }*/
    build(u, v, a, b);
    return 1;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30