Submission #260437

#	Time	Username	Problem	Language	Result	Execution time	Memory
260437		stefantaga	Building Skyscrapers (CEOI19_skyscrapers)	C++14	8 / 100	44 ms	888 KiB

skyscrapers

#include <bits/stdc++.h>

using namespace std;
int dl[]={1,1,1,0,0,-1,-1,-1};
int dc[]={-1,0,1,-1,1,1,-1,0};
int dl2[]={1,0,0,-1};
int dc2[]={0,1,-1,0};
int n,t,i,sol[150005],nr,fr[150005],j,k;
pair <int,int> loc,b;
queue <int> q;
struct wow
{
    int x,y;
}v[150005];
int main()
{
    #ifdef HOME
    ifstream cin("date.in");
    ofstream cout("date.out");
    #endif // HOME
    cin>>n;
    cin>>t;
    for (i=1;i<=n;i++)
    {
        cin>>v[i].x>>v[i].y;
    }
    if (t==1)
    {
        q.push(1);
        sol[++nr]=1;
        fr[1]=1;
        while (!q.empty())
        {
            loc={v[q.front()].x,v[q.front()].y};
            q.pop();
            for (i=0;i<4;i++)
            {
                b.first=loc.first+dl2[i];
                b.second=loc.second+dc2[i];
                for (j=1;j<=n;j++)
                {
                    if (b.first==v[j].x&&b.second==v[j].y&&fr[j]==0)
                    {
                        sol[++nr]=j;
                        fr[j]=1;
                        q.push(j);
                    }
                }
            }
        }
        for (j=1;j<=n;j++)
        {
            if (fr[j]==1)
            {
                q.push(j);
            }
        }
        while (!q.empty())
        {
            loc={v[q.front()].x,v[q.front()].y};
            q.pop();
            for (i=0;i<8;i++)
            {
                b.first=loc.first+dl[i];
                b.second=loc.second+dc[i];
                for (j=1;j<=n;j++)
                {
                    if (b.first==v[j].x&&b.second==v[j].y&&fr[j]==0)
                    {
                        sol[++nr]=j;
                        fr[j]=1;
                        q.push(j);
                    }
                }
            }
        }
        for (i=1;i<=n;i++)
        {
            if (fr[i]==0)
            {
                cout<<"NO";
                return 0;
            }
        }
        cout<<"YES"<<'\n';
        for (i=1;i<=n;i++)
        {
            cout<<sol[i]<<'\n';
        }
    }
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 12
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20
• Subtask 6: 0 / 10
• Subtask 7: 0 / 19