Submission #1750013


Source Code Expand

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

int N;
int F[100010] = {0};
int ans = 0;
vector<int> G[100010];

int DFS(int v,int p)
{
    int res = 0;
    for(int i = 0; i < G[v].size(); i++)if(G[v][i] != p)res += DFS(G[v][i],v);
    if(res > 0)ans += 2;
    if(F[v])res++;
    return res;
}

int main()
{
    scanf("%d",&N);
    for(int i = 1; i <= N; i++)scanf("%d",F + i);
    for(int i = 0; i < N - 1; i++)
    {
        int a,b;
        scanf("%d%d",&a,&b);
        G[a].push_back(b);
        G[b].push_back(a);
    }

    for(int i = 1; i <= N; i++)
    {
        if(F[i])
        {
            DFS(i,-1);
            printf("%d\n",ans);
            return 0;
        }
    }
    return 0;
}

Submission Info

Submission Time
Task B - ツリーグラフ
User unit
Language C++14 (GCC 5.4.1)
Score 0
Code Size 738 Byte
Status RE
Exec Time 316 ms
Memory 264704 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
                   ^
./Main.cpp:21:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= N; i++)scanf("%d",F + i);
                                                 ^
./Main.cpp:25:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&a,&b);
                            ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 100
Status
AC × 2
AC × 5
WA × 7
RE × 8
Set Name Test Cases
Sample subtask0_sample_01.txt, subtask0_sample_02.txt
All subtask0_sample_01.txt, subtask0_sample_02.txt, subtask1_line01.txt, subtask1_line02.txt, subtask1_line03.txt, subtask1_line04.txt, subtask1_line05.txt, subtask1_line06.txt, subtask1_random01.txt, subtask1_random02.txt, subtask1_random03.txt, subtask1_random04.txt, subtask1_random05.txt, subtask1_random06.txt, subtask1_random07.txt, subtask1_random08.txt, subtask1_special01.txt, subtask1_special02.txt, subtask1_special03.txt, subtask1_special04.txt
Case Name Status Exec Time Memory
subtask0_sample_01.txt AC 2 ms 2560 KB
subtask0_sample_02.txt AC 2 ms 2560 KB
subtask1_line01.txt AC 2 ms 2560 KB
subtask1_line02.txt WA 3 ms 2560 KB
subtask1_line03.txt WA 2 ms 2560 KB
subtask1_line04.txt WA 2 ms 2560 KB
subtask1_line05.txt WA 3 ms 2560 KB
subtask1_line06.txt AC 2 ms 2560 KB
subtask1_random01.txt RE 316 ms 264704 KB
subtask1_random02.txt RE 231 ms 264704 KB
subtask1_random03.txt RE 243 ms 264704 KB
subtask1_random04.txt RE 280 ms 264704 KB
subtask1_random05.txt RE 261 ms 264704 KB
subtask1_random06.txt RE 265 ms 264704 KB
subtask1_random07.txt WA 2 ms 2560 KB
subtask1_random08.txt RE 245 ms 264704 KB
subtask1_special01.txt AC 2 ms 2560 KB
subtask1_special02.txt WA 2 ms 2560 KB
subtask1_special03.txt WA 2 ms 2560 KB
subtask1_special04.txt RE 245 ms 264704 KB