제출 #409581

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
409581		AmineTrabelsi	Split the Attractions (IOI19_split)	C++14	0 / 100	64 ms	9408 KiB

split

#include "split.h"
#include <bits/stdc++.h>
using namespace std;
const int Mx = 1e5+5;
void get_order(int node,vector<bool> &vis,vector<int> &order,vector<vector<int>> &gr){
    order.push_back(node);
    vis[node] = 1;
    for(auto i:gr[node]){
        if(!vis[i])get_order(i,vis,order,gr);
    }
}
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
    vector<vector<int>> gr(n+1,vector<int>());
	for(int i=0;i<(int)p.size();i++){
        gr[p[i]].push_back(q[i]);
        gr[q[i]].push_back(p[i]);
    }
    vector<bool> vis(n+1,0);
    vector<int> order;
    for(int i=0;i<n;i++){
        if((int)gr[i].size() == 1){
            get_order(i,vis,order,gr);
            break;
        }
    }
    //cerr<<n<<' '<<order.size()<<'\n';
    if((int)order.size() != n){
        vector<int> ret(n,0);
        return ret;
    }
    vector<int> res(n,0);
    int ind = 0;
    while(a--){
        res[order[ind++]] = 1;
    }
    while(b--){
        res[order[ind++]] = 2;
    }
    while(ind < n){
        res[order[ind++]] = 3;
    }
	return res;
}

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