제출 #745482

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
745482		MohamedAliSaidane	Split the Attractions (IOI19_split)	C++14	0 / 100	2 ms	2644 KiB

split

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


typedef long long ll;

typedef vector<int> vi;

#define pb push_back
#define ff first
#define ss second

const int nax = 1e5 + 4;
int n, m, a, b, c;
vi adj[nax];

vi find_split(int N, int A, int B, int C, vi P, vi Q)
{
    n = N, a = A, b = B, c = C;
    m = P.size();
    for(int i = 0; i < m; i ++)
    {
        adj[P[i]].pb(Q[i]);
        adj[Q[i]].pb(P[i]);
    }
    int root;
    for(int i =0; i < n ;i ++)
    {
        if(adj[i].size() == 1)
            root = i;
    }
    int prec = -1;
    vi ans(n);
    for(int i =0; i < n; i++)
    {
        if(i >= a)
        {
            if(i >= a + b)
                ans[root] = 3;
            else
                ans[root] = 2;
        }
        else
            ans[root] = 1;
        for(auto e: adj[root])
        {
            if(e != prec)
            {
                root = e;
                break;
            }
        }
        prec = root;
    }
    return ans;
}
/*
int32_t main()
{
    int N, M, A, B, C;
    cin >> N >> M >> A >> B >> C;
    vi P(M), Q(M);
    for(int i = 0; i < M; i++)
        cin >> P[i] >> Q[i];
    vi ANS = find_split(N, A, B, C, P, Q);
    for(auto e: ANS)
        cout << e << ' ';
}
*/

컴파일 시 표준 에러 (stderr) 메시지

split.cpp: In function 'vi find_split(int, int, int, int, vi, vi)':
split.cpp:40:25: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   40 |                 ans[root] = 3;
      |                         ^

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