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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#672280#7738. Equivalent RewritingnageingWA 1ms3616kbC++201.7kb2024-10-24 16:16:482024-10-24 16:16:53

Judging History

你现在查看的是最新测评结果

  • [2024-10-24 16:16:53]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3616kb
  • [2024-10-24 16:16:48]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pii;

struct DSU {
    std::vector<int> f, siz;
    
    DSU() {}
    DSU(int n) {
        init(n);
    }
    
    void init(int n) {
        f.resize(n);
        std::iota(f.begin(), f.end(), 0);
        siz.assign(n, 1);
    }
    
    int find(int x) {
        while (x != f[x]) {
            x = f[x] = f[f[x]];
        }
        return x;
    }
    
    bool same(int x, int y) {
        return find(x) == find(y);
    }
    
    bool merge(int x, int y) {
        x = find(x);
        y = find(y);
        if (x == y) {
            return false;
        }
        siz[x] += siz[y];
        f[y] = x;
        return true;
    }
    
    int size(int x) {
        return siz[find(x)];
    }
};

void solve() {
	int n, m;
	cin >> n >> m;
	DSU dsu(m);

	vector<vector<int>> g(n);

	for (int i = 0; i < n; i ++) {
		int k;
		cin >> k;
		vector<int> a(k);
		for (int j = 0; j < k; j ++) {
			cin >> a[j];
			a[j] --;
		}
		g[i] = a;
	}
	vector<int> vis(m);
	int cnt = 0;
	for (int i = 0; i < n; i ++) {
		for (int j = 0; j < g[i].size(); j ++) {
			if (j > 0) {
				dsu.merge(g[i][0], g[i][j]);
			}
		}
		int p = dsu.find(g[i][0]);
		if (!vis[p]) {
			vis[p] = 1;
			cnt ++;
		}
		if (cnt > 1) {
			cout << "Yes\n";
			for (int j = 0; j < i - 1; j ++) {
				cout << j + 1 << ' ';
			}
			cout << i + 1 << ' ' << i << ' ';
			for (int j = i + 1; j < n; j ++) {
				cout << j + 1 << ' ';
			}
			cout << '\n';
			return;
		}
	}

	cout << "No\n";

}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr); cout.tie(nullptr);
	int t = 1;
	cin >> t;
	while (t --) {
		solve();
	}
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3596kb

input:

3
3 6
3 3 1 5
2 5 3
2 2 6
2 3
3 1 3 2
2 3 1
1 3
2 2 1

output:

Yes
1 3 2 
No
No

result:

ok OK. (3 test cases)

Test #2:

score: 0
Accepted
time: 1ms
memory: 3616kb

input:

1
10 5
2 2 4
4 1 3 4 2
1 2
3 2 1 4
4 5 2 4 3
3 2 5 4
3 5 4 2
3 1 3 2
5 1 4 2 3 5
1 4

output:

Yes
2 1 3 4 5 6 7 8 9 10 

result:

ok OK. (1 test case)

Test #3:

score: -100
Wrong Answer
time: 0ms
memory: 3556kb

input:

1
20 5
5 4 1 2 5 3
2 5 3
3 5 1 2
5 4 5 1 3 2
3 4 2 5
5 3 1 5 4 2
5 5 1 2 3 4
1 3
4 5 1 2 3
4 4 1 3 5
2 5 2
4 2 3 5 1
3 2 4 5
5 2 3 4 1 5
4 5 2 4 3
1 2
2 4 3
4 4 5 3 1
5 4 1 5 3 2
3 5 1 3

output:

No

result:

wrong answer jury found an answer but participant did not (test case 1)