Submission #984082

#	Time	Username	Problem	Language	Result	Execution time	Memory
984082		phoenix0423	Comparing Plants (IOI20_plants)	C++17	5 / 100	67 ms	10316 KiB

plants

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define pb push_back
#define eb emplace_back
const int maxn = 4e5 + 5;
const int INF = 1e9;
#include "plants.h"
int a[maxn];
int n, k;
vector<int> r;

void init(int _k, std::vector<int> _r) {
	r = _r, k = _k;
	n = r.size();
	for(auto x : _r) r.pb(x);
	for(int i = 0; i < 2 * n; i++) a[i] = 1 - r[i] * 2;
	for(int i = 1; i < 2 * n; i++) a[i] += a[i - 1];
}

int compare_plants(int x, int y) {\
	int m = a[y - 1] - (x ? a[x - 1] : 0);
	if(m == y - x) return 1;
	if(m == x - y) return -1;
	x += n;
	m = a[x - 1] - a[y - 1];
	if(m == x - y) return -1;
	if(m == y - x) return 1;
	return 0;
}

• 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