Submission #1023170

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1023170	2024-07-14T11:38:57 Z	Mr_Ph	Comparing Plants (IOI20_plants)	C++17	Compilation error	0 ms	0 KB

plants

#include "plants.h"
#include <bits/stdc++.h>
// #include "grader.cpp"
using namespace std;
vector<int>pref;
int N;
int get(int l,int r)
{
	if(l<=r)
		return pref[r]-(l?pref[l-1]:0);
	else
		return pref[N-1]-(l?pref[l-1]:0)+pref[r];
}
void init(int k, std::vector<int> r) {
	N=r.size();
	pref.resize(N);
	pref[0]=r[0];
	for(int i=1;i<N;i++)
		pref[i]=pref[i-1]+r[i];
}

int compare_plants(int x, int y) {
	int l=x,r=y-1;
	int r1=(x==0?N-1:x-1),l1=y;
	if(get(l,r)==0)return 1;
	if(get(l1,r1)==(r1>=l1?r1-l1+1:n-l1+r1+1))return 1;
	if(get(l,r)==(r-l)+1)return -1;
	if(get(l1,r1)==0)return -1;
	return 0;
}

Compilation message

plants.cpp: In function 'int compare_plants(int, int)':
plants.cpp:26:33: error: 'n' was not declared in this scope
   26 |  if(get(l1,r1)==(r1>=l1?r1-l1+1:n-l1+r1+1))return 1;
      |                                 ^