Submission #295567

#	Time	Username	Problem	Language	Result	Execution time	Memory
295567		rqi	Split the Attractions (IOI19_split)	C++14	0 / 100	2080 ms	2688 KiB

split

#include "split.h"
#include <bits/stdc++.h>
using namespace std;

typedef vector<int> vi;

#define pb push_back
#define sz(x) (int)(x).size()

const int mx = 100005;
vi adj[mx];
vi res;

vi find_split(int n, int a, int b, int c, vi p, vi q) {
	res = vi(n, 0);
	bool SUB1 = 1;
	for(int i = 0; i < sz(p); i++){
		adj[p[i]].pb(q[i]);
		adj[q[i]].pb(p[i]);
	}

	for(int i = 0; i < n; i++){
		if(sz(adj[i]) > 2) SUB1 = 0;
	}

	if(SUB1){
		int A = 0;
		int B = 0;
		int C = 0;
		int cur = -1;
		for(int i = 0; i < n; i++) if(sz(adj[i]) == 1) cur = i;

		int last = -1;

		while(true){
			if(A < a){
				res[cur] = 1;
				A++;
			}
			else if(B < b){
				res[cur] = 2;
				B++;
			}
			else{
				res[cur] = 3;
				C++;
			}

			if(adj[cur][0] == last){
				if(sz(adj[cur]) == 1) break;
				last = cur;
				cur = adj[cur][1];
			}
			else{
				last = cur;
				cur = adj[cur][0];
			}
		}

		return res;
	}

	return res;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36