Submission #1050171

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050171		mychecksedad	Comparing Plants (IOI20_plants)	C++17	0 / 100	1 ms	360 KiB

plants

#include "plants.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define pb push_back
#define vi vector<int>
#define all(x) x.begin(),x.end()
const int N = 3e5;

int a[N], n;
void init(int k, std::vector<int> r) {
	n = r.size();
	for(int i = 0; i < n; ++i) a[i] = 0;
	if(2*k > n){
		int mx = 0;
		int f = n-1;
		for(int rep = 0; rep < n; ++rep){
			mx = *max_element(all(r));
			int l = n, rr = -1;
			vector<int> L;
			for(int i = 0; i < n; ++i){
				if(r[i] == mx){
					L.pb(i);
				}
			}
			int x = L[0];
			if(L.size()==1) x = L[0];
			else{
				for(int i = 0; i + 1 < L.size(); ++i){
					if(L[i] + k <= L[i + 1]){
						x = L[i + 1];
						break;
					}
				}
			}
			a[x] = f--;
			r[x] = -n;	
			// cout << x << ' ';
			// for(int i = x - 1; i > x - k; --i) r[(i+n)%n]--;
		}
	// for(int i = 0; i < n; ++i) cout << a[i] << ' ';
	}else{

	}
}

int compare_plants(int x, int y) {
	return a[x] < a[y] ? 1 : (a[x] > a[y] ? -1 : 0);
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:29:26: 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 + 1 < L.size(); ++i){
      |                    ~~~~~~^~~~~~~~~~
plants.cpp:19:8: warning: unused variable 'l' [-Wunused-variable]
   19 |    int l = n, rr = -1;
      |        ^
plants.cpp:19:15: warning: unused variable 'rr' [-Wunused-variable]
   19 |    int l = n, rr = -1;
      |               ^~

• 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