Submission #721089

#	Time	Username	Problem	Language	Result	Execution time	Memory
721089		bin9638	Comparing Plants (IOI20_plants)	C++17	0 / 100	1 ms	212 KiB

plants

#include <bits/stdc++.h>

#ifndef SKY
#include "plants.h"
#endif // SKY

using namespace std;

#define N 310
#define ll long long
#define fs first
#define sc second
#define ii pair<ll,int>
#define pb push_back

int k,n,h[N],a[N],ktr[N][N];

bool check(int u)
{
    if(a[u]!=0)
        return 0;
    for(int j=1;j<k;j++)
        if(a[(u-j+n)%n]==0)
            return 0;
    return 1;
}

void init(int cc, vector<int> r)
{
	k=cc;
	n=r.size();
	for(int i=0;i<n;i++)
        a[i]=r[i];
    int dem=n;
    for(int t=0;t<n;t++)
    {
    for(int i=0;i<n;i++)
        if(check(i))
        {
            h[i]=--dem;
            for(int j=0;j<k;j++)
                a[(i-j+n)%n]--;
            break;
        }
    }
   // for(int i=0;i<n;i++)cout<<h[i]<<" ";cout<<endl;
    for(int i=0;i<n;i++)
        for(int j=1;j<k;j++)
            if(h[i]>h[(i-j+n)%n])
                ktr[i][(i-j+n)%n]=1;//,cout<<i<<" "<<(i-j+n)%n<<endl;
    for(int k=0;k<n;k++)
        for(int i=0;i<n;i++)
            for(int j=0;j<n;j++)
                ktr[i][j]|=(ktr[i][k]&ktr[k][j]);
}

int compare_plants(int x, int y)
{
    if(ktr[x][y])
        return 1;
    if(ktr[y][x])
        return -1;
    return 0;
}

#ifdef SKY
int main()
{
    freopen("A.inp","r",stdin);
    freopen("A.out","w",stdout);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    int n,k;
    cin>>n>>k;
    vector<int>r(n);
    for(int i=0;i<n;i++)
        cin>>r[i];//,cout<<r[i]<<endl;
    init(k,r);
    int q;
    cin>>q;
    while(q--)
    {
        int x,y;
        cin>>x>>y;
        cout<<compare_plants(x,y)<<endl;
    }
    return 0;
}
#endif

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25