oj.uz

Submission #689967

# Submission time Handle Problem Language Result Execution time Memory
689967 2023-01-29T22:40:32 Z NK_ Paths (BOI18_paths) C++17
0 / 100
 66 ms 4220 KB 
// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>

using namespace std;

#define nl '\n'

using ll = int64_t;

int main() {
	cin.tie(0)->sync_with_stdio(0);
	
	int N, M, K; cin >> N >> M >> K;

	vector<int> A(N); for(auto& x : A) { cin >> x; --x; }

	vector<vector<int>> adj(N);

	for(int i = 0; i < M; i++) {
		int u, v; cin >> u >> v; --u, --v;
		// cout << u << " " << v << nl;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}

	vector<vector<ll>> dp(N, vector<ll>(1<<K, 0));
	for(int i = 0; i < N; i++) dp[i][1<<A[i]] = 1;

	ll ans = 0;

	int P2 = 1;
	for(int s = 1; s < (1<<K); s++) {
		for(int u = 0; u < N; u++) if (dp[u][s] != 0) {
			if (s == P2) { ans += dp[u][s]; P2 += P2; }
			for(const auto &v : adj[u]) if (((s >> A[v]) & 1) ^ 1) dp[v][s^(1<<A[v])] += dp[u][s];
		}
	}

	cout << ans << nl;


    return 0;
}

Subtask #1
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 66 ms 4220 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -