Submission #1050049

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050049		aykhn	Comparing Plants (IOI20_plants)	C++17	0 / 100	29 ms	3152 KiB

plants

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

using namespace std;

const int MXN = 5e3 + 5;

int n;
int a[MXN], cnt[MXN], f[MXN];

void init(int k, vector<int> r) 
{
	n = r.size();
	for (int i = 0; i < n; i++) cnt[i] = k - 1;
	int cur = -1;
	while (cur < n)
	{
		vector<int> idx;
		for (int i = 0; i < n; i++)
		{
			if (f[i]) continue;
			if (r[i] == cnt[i]) idx.push_back(i);
		}
		if (idx.empty()) break;
		int ind = -1;
		if (idx.size() == 1) ind = 0;
		else 
		{
			for (int i = 0; i < idx.size(); i++)
			{
				if ((idx[(i + 1) % (int)idx.size()] - idx[i] + n) % n >= k) 
				{
					ind = (i + 1) % (int)idx.size();
					break;
				}
			}
		}
		for (int i = ind; 1;)
		{
			a[idx[i]] = ++cur;
			f[idx[i]] = 1;
			i = (i + 1) % (int)idx.size();
			if (i == ind) break;
		}
		for (int k = 0; k < idx.size(); k++)
		{
			int ind = idx[k];
			for (int j = (ind - 1 + n) % n; j != (ind - k + n) % n; j = (j - 1 + n) % n) cnt[j]--;
		}
	}
}

int compare_plants(int x, int y) 
{
	return (a[x] > a[y] ? 1 : -1);
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |    for (int i = 0; i < idx.size(); i++)
      |                    ~~^~~~~~~~~~~~
plants.cpp:45:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for (int k = 0; k < idx.size(); k++)
      |                   ~~^~~~~~~~~~~~

• 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