Submission #864912

#	Time	Username	Problem	Language	Result	Execution time	Memory
864912		andrei_boaca	Comparing Plants (IOI20_plants)	C++17	0 / 100	2 ms	8284 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;
vector<int> muchii[200005];
int n,bigger[200005],smaller[200005],lastsmall[200005],lastbig[200005];
bool use[200005];
int dist(int a,int b)
{
    return (b-a+n)%n;
}
void init(int k, std::vector<int> r)
{
    n=r.size();
    for(int i=0;i<n;i++)
    {
        if(r[i]==0)
        {
            int j=(i-1+n)%n;
            while(r[j]==1)
            {
                lastsmall[j]=i;
                j=(j-1+n)%n;
            }
        }
        if(r[i]==1)
        {
            int j=(i-1+n)%n;
            while(r[j]==0)
            {
                lastbig[j]=i;
                j=(j-1+n)%n;
            }
        }
    }
}
int compare_plants(int x, int y)
{
    if(dist(x,y)+dist(y,lastsmall[x])==dist(x,lastsmall[x]))
        return -1;
    if(dist(x,y)+dist(y,lastbig[x])==dist(x,lastbig[x]))
        return 1;
    if(dist(y,x)+dist(x,lastsmall[y])==dist(y,lastsmall[y]))
        return 1;
    if(dist(y,x)+dist(x,lastbig[y])==dist(y,lastbig[y]))
        return -1;
    return 0;
}

• 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