# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
442227 | 2021-07-07T10:10:49 Z | aryan12 | Bosses (BOI16_bosses) | C++17 | 6 ms | 572 KB |
#include <bits/stdc++.h> using namespace std; #define int long long mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count()); const int N = 5010; vector<int> g[N]; void Solve() { int n; cin >> n; for(int i = 1; i <= n; i++) { int len; cin >> len; for(int j = 0; j < len; j++) { int x; cin >> x; g[x].push_back(i); } } int ans = INT_MAX; for(int root = 1; root <= n; root++) { int par[n + 1], inedge[n + 1]; bool vis[n + 1]; for(int i = 0; i <= n; i++) { par[i] = -1; inedge[i] = 0; vis[i] = false; } queue<int> q; q.push(root); vis[root] = true; int cnt = 1; while(!q.empty()) { int node = q.front(); q.pop(); for(int i = 0; i < g[node].size(); i++) { if(vis[g[node][i]]) { continue; } vis[g[node][i]] = true; cnt++; q.push(g[node][i]); par[g[node][i]] = node; inedge[node]++; } } if(cnt != n) { continue; } int totalAns[n + 1]; for(int i = 1; i <= n; i++) { totalAns[i] = 1; if(inedge[i] == 0) { q.push(i); } } int curans = 0; while(!q.empty()) { int node = q.front(); curans += totalAns[node]; q.pop(); inedge[par[node]]--; if(inedge[par[node]] == 0) { q.push(par[node]); } totalAns[par[node]] += totalAns[node]; } ans = min(ans, curans); } cout << ans << "\n"; } int32_t main() { auto begin = std::chrono::high_resolution_clock::now(); ios_base::sync_with_stdio(0); cin.tie(0); int t = 1; //cin >> t; while(t--) { Solve(); } auto end = std::chrono::high_resolution_clock::now(); auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin); cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 332 KB | Output is correct |
2 | Correct | 1 ms | 436 KB | Output is correct |
3 | Correct | 1 ms | 332 KB | Output is correct |
4 | Correct | 1 ms | 332 KB | Output is correct |
5 | Correct | 1 ms | 332 KB | Output is correct |
6 | Correct | 1 ms | 332 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 332 KB | Output is correct |
2 | Correct | 1 ms | 436 KB | Output is correct |
3 | Correct | 1 ms | 332 KB | Output is correct |
4 | Correct | 1 ms | 332 KB | Output is correct |
5 | Correct | 1 ms | 332 KB | Output is correct |
6 | Correct | 1 ms | 332 KB | Output is correct |
7 | Correct | 1 ms | 332 KB | Output is correct |
8 | Correct | 1 ms | 332 KB | Output is correct |
9 | Correct | 1 ms | 332 KB | Output is correct |
10 | Correct | 1 ms | 332 KB | Output is correct |
11 | Correct | 1 ms | 332 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 332 KB | Output is correct |
2 | Correct | 1 ms | 436 KB | Output is correct |
3 | Correct | 1 ms | 332 KB | Output is correct |
4 | Correct | 1 ms | 332 KB | Output is correct |
5 | Correct | 1 ms | 332 KB | Output is correct |
6 | Correct | 1 ms | 332 KB | Output is correct |
7 | Correct | 1 ms | 332 KB | Output is correct |
8 | Correct | 1 ms | 332 KB | Output is correct |
9 | Correct | 1 ms | 332 KB | Output is correct |
10 | Correct | 1 ms | 332 KB | Output is correct |
11 | Correct | 1 ms | 332 KB | Output is correct |
12 | Incorrect | 6 ms | 572 KB | Output isn't correct |
13 | Halted | 0 ms | 0 KB | - |