Submission #1050451

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050451		dozer	Comparing Plants (IOI20_plants)	C++14	14 / 100	4083 ms	5996 KiB

plants

#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define sp " "
#define endl "\n"
#define LL node * 2
#define RR node * 2 + 1
#define ll long long
#define MAXN 200005

const int modulo = 1e9 + 7;
const ll INF = 2e18 + 7;

int val[MAXN];

void init(int k, vector<int> r) {
	int n = r.size();
	vector<int> done(n, 0);
	vector<int> todo;
	for (int i = 0; i < n; i++){
		if (r[i] == 0) done[i] = -1;
	}

	int cntr = 0;
	int sum = 0;
	while(sum < n){
		int start = 0;
		for (int i = 0; i < n; i++) if (done[i] == -1) start = i;

		for (int i = 0; i < n; i++){
			if (done[i] != -1) continue;
			int nxt = i + 1;
			while(done[nxt] != -1) nxt = (nxt + 1) % n;
			if ((nxt - i + n) % n >= k) start = nxt;
		}
		val[start] = cntr++;
		done[start] = 1;
		sum++;
		for (int j = 1; j <= k - 1; j++){
			int to = (start - j + n) % n; 
			r[to]--;
			if (r[to] == 0 && done[to] == 0) done[to] = -1;
		}
	}
}

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

/*
static int n, k, q;
static std::vector<int> r;
static std:: vector<int> x;
static std:: vector<int> y;
static std:: vector<int> answer;
int main() {
	fileio();
	assert(scanf("%d%d%d", &n, &k, &q) == 3);
	r.resize(n);
	answer.resize(q);
	for (int i = 0; i < n; i++) {
		int value;
		assert(scanf("%d", &value) == 1);
		r[i] = value;
	}
	x.resize(q);
	y.resize(q);
	for (int i = 0; i < q; i++) {
		assert(scanf("%d%d", &x[i], &y[i]) == 2);
	}
	fclose(stdin);

	init(k, r);
	for (int i = 0; i < q; i++) {
		answer[i] = compare_plants(x[i], y[i]);
	}

	for (int i = 0; i < q; i++) {
		printf("%d\n", answer[i]);
	}

	fclose(stdout);

	return 0;
}
*/

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