제출 #259841

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
259841	2020-08-08 16:50:25	Kastanda	Mousetrap (CEOI17_mousetrap)	C++11	100 / 100	1312 ms	229240 KiB

mousetrap

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// M
#include<bits/stdc++.h>
using namespace std;
const int N = 1000006;
int n, root, st, SM, P[N], M[N], dp[N];
vector < int > Adj[N], V[N];
void DFS(int v, int p = 0)
{
    P[v] = p;
    for (int i = 0; i < (int)Adj[v].size(); i ++)
        if (Adj[v][i] == p)
            Adj[v].erase(Adj[v].begin() + i);
    if (st == v) M[v] = 1;
    for (int u : Adj[v])
        DFS(u, v), M[v] |= M[u];
    if (v == root)
    {
        int w = -1;
        for (int u : Adj[v])
            if (M[u]) w = u;
        Adj[v] = {w};
    }
}
void DFS2(int v, int p = 0)
{
    if (v != root)
        SM += (int)Adj[v].size() - (M[v] && v != st);
    for (int u : Adj[v])
        DFS2(u, v);
    if (v != root)
 
 
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컴파일 시 표준 에러 (stderr) 메시지

mousetrap.cpp: In function 'int main()':
mousetrap.cpp:70:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &root, &st);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
mousetrap.cpp:74:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &v, &u);
         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 20 / 20
• Subtask 4: 35 / 35