Submission #718144

#	Time	Username	Problem	Language	Result	Execution time	Memory
718144		mseebacher	Split the Attractions (IOI19_split)	C++17	7 / 100	68 ms	12820 KiB

split

#include "split.h"
#include <bits/stdc++.h>

using namespace std;


#define MAX_N (int) 1e5+5
vector<int> ad[MAX_N];
vector<int> res;
vector<bool> vis(MAX_N);

void dfs(int x,int a,int b,int c){
	if(vis[x]) return;
	vis[x] = 1;
	if(a > 0){
		res[x] = 1;
		--a;
	}else if(b > 0){
		res[x] = 2;
		--b;
	}else{
		res[x] = 3;
	}
	for(auto s: ad[x]){
		dfs(s,a,b,c);
	}
}

vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
	for(int i = 0;i<(int)p.size();i++){
		ad[p[i]].push_back(q[i]);
		ad[q[i]].push_back(p[i]);
	}
	res.assign(n,0);
	if(p.size() < n-1) return res;
	int start = 0;
	for(int i = 0;i<n;i++){
		if(ad[i].size() == 1){
			start = i;
			break;
		}
	}
	dfs(start,a,b,c);
	return res;
}

Compilation message (stderr)

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:35:14: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |  if(p.size() < n-1) return res;
      |     ~~~~~~~~~^~~~~

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