Submission #430666

#	Time	Username	Problem	Language	Result	Execution time	Memory
430666		Ozy	Comparing Plants (IOI20_plants)	C++17	5 / 100	101 ms	8900 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
#define lli int
#define rep(i,a,b) for (lli i = (a); i <= (b); i++)
#define repa(i,a,b) for (lli i = (a); i >= (b); i--)
#define debug(a) cout << #a << " = " << a << endl;
#define debugsl(a) cout << #a << " = " << a << ", ";

#define MAX 200000

lli n,pos;
lli pm[MAX+2];
vector<int> sig;

lli recurcion(lli pos, lli i) {

    lli y = pos;
    pos++;
    if (pos >= n) pos = 0;

    if (sig[pos] == sig[i]) {
        pm[y] = recurcion(pos,i);
        return pm[y];
    }
    else {
        pm[y] = pos;
        return pos;
    }
}

void init(int k, std::vector<int> r) {

	n = r.size();
	sig = vector<int> (n, 0);
    rep(i,0,n-1) {
        pm[i] = -1;
        sig[i] = r[i];
    }

    rep(i,0,n-1) if (pm[i] == -1) pm[i] = recurcion(i,i);

}

int compare_plants(int x, int y) {

	lli res;
	if (x > y) {
        swap(x,y);
        res = -1;
    }
    else res = 1;

	if (pm[x] >= y || pm[x] < x) {
        if (sig[x] == 1) res *= -1;
	}
	else if (pm[y] >= x && pm[y] < y) {
        if (sig[y] == 0) res *= -1;
	}
	else return 0;

	return res;

}

• Subtask 1: 5 / 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