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Submission #958402

# Submission time Handle Problem Language Result Execution time Memory
958402 2024-04-05T18:22:05 Z vjudge1 Bosses (BOI16_bosses) C++17
100 / 100
 1040 ms 884 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long
#define ll long long
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>

const int N = 5069;
const ll mod = 1e9 + 7;

int tc;
int n, sub[N], cn, tot, dp[N];
bool vis[N];
vector<int> al[N];

void dfs(int x)
{
    sub[x] = 1;
    vis[x] = 1;
    for(auto z : al[x])
    {
        if(dp[z] == 1 + dp[x] and !vis[z]) {
            dfs(z);
            sub[x] += sub[z];
        }
    }
    tot += sub[x];
}

signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int i, j;

    cin >> n;
    for(i = 1; i <= n; i++)
    {
        int k;
        cin >> k;
        for(j = 1; j <= k; j++)
        {
            int x;
            cin >> x;
            al[x].push_back(i);
        }
    }
    
    int ans = 1e18;
    for(i = 1; i <= n; i++)
    {
        cn = tot = 0;
        for(j = 1; j <= n; j++)
        {
            sub[j] = 0;
            vis[j] = 0;
            dp[j] = 0;
        }
        queue<int> q;
        q.push(i);
        dp[i] = 1;
        cn = 1;
        while(!q.empty())
        {
            int x = q.front();
            q.pop();
            for(auto z : al[x])
            {
                if(dp[z] == 0)
                {
                    dp[z] = dp[x] + 1;
                    ++cn;
                    q.push(z);
                }
            }
        }
        if(cn == n)
        {
            dfs(i);
            ans = min(ans, tot);
        }
    }
    cout << ans << '\n';
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 7 ms 604 KB Output is correct
13 Correct 7 ms 552 KB Output is correct
14 Correct 85 ms 884 KB Output is correct
15 Correct 6 ms 600 KB Output is correct
16 Correct 412 ms 604 KB Output is correct
17 Correct 1040 ms 856 KB Output is correct
18 Correct 982 ms 860 KB Output is correct