Submission #3388469


Source Code Expand

#include <cstdio>
#include <algorithm>
#include <iostream>
#include <vector>
#include <map>
#include <unordered_map>
#include <cmath>
#include <queue>
#include <set>

using namespace std;
typedef long long ll;
#define INF int(1e9)
#define REP(i, n) for(int i = 0; i < (int)(n); i++)
#define REPR(i, n) for(int i = n - 1; i >= 0; i--)
#define REPONE(i, n) for(int i = 1; i <= (int)(n); i++)
#define EACH(i, mp) for(auto i:mp)
#define FOR(i, m, n) for(int i = m;i < n;i++)

using namespace std;
const int MAX_V = 100;
vector<int> G[MAX_V + 1];
bool seen[MAX_V + 1];
int N, M;

bool dfs(int i, int before) {
    seen[i] = true;
    EACH(g, G[i]) {
        if (seen[g] && g != before) return false;
        else if (g != before) return dfs(g, i);
    }
    return true;
}

void solve() {
    int ans = 0;
    REPONE(i, N) {
        if (seen[i]) continue;
        if (dfs(i, -1)) ans++;
    }
    cout << ans << endl;
}

int main() {
    scanf("%d %d", &N, &M);
    REP (i, M) {
        int s, t;
        scanf("%d %d", &s, &t);
        G[s].push_back(t);
        G[t].push_back(s);
    }
    solve();
    return 0;
}

Submission Info

Submission Time
Task B - バウムテスト
User hiramekun
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1165 Byte
Status WA
Exec Time 2 ms
Memory 256 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:45:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &N, &M);
                           ^
./Main.cpp:48:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &s, &t);
                               ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 100
Status
AC × 3
AC × 15
WA × 19
Set Name Test Cases
Sample subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt
All subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask1_24.txt, subtask1_25.txt, subtask1_26.txt, subtask1_27.txt, subtask1_28.txt, subtask1_29.txt, subtask1_30.txt, subtask1_31.txt
Case Name Status Exec Time Memory
subtask0_sample_01.txt AC 1 ms 256 KB
subtask0_sample_02.txt AC 1 ms 256 KB
subtask0_sample_03.txt AC 1 ms 256 KB
subtask1_01.txt WA 1 ms 256 KB
subtask1_02.txt AC 1 ms 256 KB
subtask1_03.txt AC 1 ms 256 KB
subtask1_04.txt AC 1 ms 256 KB
subtask1_05.txt AC 1 ms 256 KB
subtask1_06.txt AC 1 ms 256 KB
subtask1_07.txt WA 1 ms 256 KB
subtask1_08.txt WA 1 ms 256 KB
subtask1_09.txt AC 1 ms 256 KB
subtask1_10.txt WA 1 ms 256 KB
subtask1_11.txt WA 1 ms 256 KB
subtask1_12.txt WA 1 ms 256 KB
subtask1_13.txt AC 1 ms 256 KB
subtask1_14.txt WA 1 ms 256 KB
subtask1_15.txt AC 1 ms 256 KB
subtask1_16.txt WA 1 ms 256 KB
subtask1_17.txt WA 1 ms 256 KB
subtask1_18.txt WA 1 ms 256 KB
subtask1_19.txt WA 1 ms 256 KB
subtask1_20.txt WA 1 ms 256 KB
subtask1_21.txt WA 1 ms 256 KB
subtask1_22.txt WA 1 ms 256 KB
subtask1_23.txt WA 1 ms 256 KB
subtask1_24.txt WA 1 ms 256 KB
subtask1_25.txt AC 1 ms 256 KB
subtask1_26.txt WA 1 ms 256 KB
subtask1_27.txt WA 1 ms 256 KB
subtask1_28.txt WA 1 ms 256 KB
subtask1_29.txt AC 2 ms 256 KB
subtask1_30.txt AC 2 ms 256 KB
subtask1_31.txt AC 1 ms 256 KB