Submission #303337

#	Time	Username	Problem	Language	Result	Execution time	Memory
303337		Utaha	Comparing Plants (IOI20_plants)	C++14	0 / 100	1 ms	512 KiB

plants

#include "plants.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn = 305;
#define REP(i,n) for(int i=0;i<(n);i++)
#define eb emplace_back
#define pb push_back
#define SZ(a) ((int)a.size())
#define ALL(a) a.begin(),a.end()
int n,k;

bool vis[maxn];

int a[maxn];

int find_ans(vector<int> v){
	sort(ALL(v));
	vector<int> tmp=v;
	for(int i:v) tmp.pb(i+n);
	REP(i,SZ(tmp)-1){
		if(tmp[i+1]-tmp[i]>=n/2) return tmp[i+1]%n;
	}
	assert(0);
	return -1;
}

void init(int _k, std::vector<int> r) {
	n = r.size();
	k = _k;
	assert(k*2>n);

	REP(T,n){
		vector<int> idx;
		REP(j,n) if(!vis[j]){
			if(r[j]==0) idx.pb(j);
		}
		int t = find_ans(idx);

		a[t] = n-T;
		REP(i,k-1){
			int pre = (t-1-i+n)%n;
			r[pre]--;
		}
	}
	return;
}

// bool between(int idx,int l,int r){
// 	if(l<=idx&&idx<r) return 1;
// 	if(l<=idx+n&&idx+n<r) return 1;
// 	// cout<<idx<<' '<<l<<' '<<r<<endl;
// 	return 0;
// }

int compare_plants(int x, int y) {
	// if(between(y,x,x+k)){
	// 	if(v[x]==0) return 1;
	// 	else if(v[x] == k-1) return -1;
	// }
	// if(between(x,y,y+k)){
	// 	if(v[y]==0) return -1;
	// 	else if(v[y] == k-1) return 1;
	// }
	// return 0;

	if(a[x]>a[y]) return 1;
	else if(a[y]>a[x]) return -1;
	else return 0;
}

• 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