Submission #369834

#	Time	Username	Problem	Language	Result	Execution time	Memory
369834		MilosMilutinovic	Split the Attractions (IOI19_split)	C++14	0 / 100	71 ms	8808 KiB

split

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

#define pb push_back

const int mxN=1e5;
vector<int> g[mxN], euler;
bool was[mxN];

void dfs(int u) {
	was[u]=true;
	euler.pb(u);
	for(int i:g[u])
		if(!was[i])
			dfs(i);
}

vector<int> find_split(int n, int a, int b, int c, vector<int> u, vector<int> v) {
	int m=(int)u.size();
	for(int i=0; i<m; ++i)
		g[u[i]].pb(v[i]), g[v[i]].pb(u[i]);
	int root;
	for(int i=0; i<n; ++i)
		if((int)g[i].size()==1)
			root=i;
	dfs(root);
	vector<int> ans(n);
	for(int i:euler) {
		if(a>0)
			ans[i]=1, --a;
		else
			if(b>0)
				ans[i]=2, --b;
			else
				ans[i]=3;
	}
	return ans;
}

/*int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	return 0;
}*/

Compilation message (stderr)

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:27:5: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   27 |  dfs(root);
      |  ~~~^~~~~~

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