Submission #823668

#	Time	Username	Problem	Language	Result	Execution time	Memory
823668		GusterGoose27	Comparing Plants (IOI20_plants)	C++17	0 / 100	1 ms	212 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 2e5+5;
bool lt[MAXN];
int pre[2*MAXN];
int n;

void init(int k, vector<int> r) {
	n = r.size();
	for (int i = 0; i < n; i++) {
		lt[i] = r[i];
	}
	for (int i = 1; i < 2*n; i++) pre[i] = pre[i-1]+lt[(i-1)%n];
	return;
}

int compare_plants(int x, int y) {
	// if (x != (y+1)%n && y != (x+1)%n) return 0;
	// if (x == (y+1)%n) return 2*(!lt[y])-1;
	// return 2*lt[x]-1;
	// if (x < y) {
		if (pre[y]-pre[x] == y-x) return -1;
		if (pre[x+n]-pre[y] == x+n-y) return 1;
		return 0;
	// }
	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