oj.uz

Submission #626394

# Submission time Handle Problem Language Result Execution time Memory
626394 2022-08-11T12:20:14 Z tamthegod Paths (RMI21_paths) C++17
56 / 100
 600 ms 32348 KB 
#include<bits/stdc++.h>

#define int long long
#define pb push_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 1e6 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;
int n, k;
vector<pair<int, int>> adj[maxN];
int f[maxN];
void ReadInput()
{
    cin >> n >> k;
    for(int i=1; i<n; i++)
    {
        int u, v, w;
        cin >> u >> v >> w;
        adj[u].pb({v, w});
        adj[v].pb({u, w});
    }
}
void predfs(int u, int par)
{
    for(auto a : adj[u])
    {
        int v = a.fi, w = a.se;
        if(v == par) continue;
        predfs(v, u);
        f[u] = max(f[u], f[v] + w);
    }
}
vector<int> vc;
void dfs(int u, int par, int root)
{
    int _max = 0, id = 0;
    for(auto a : adj[u])
    {
        int v = a.fi, w = a.se;
        if(v == par) continue;
        dfs(v, u, root);
        //if(u == 3) cout << f[4] << " ";
        if(f[v] + w > _max)
        {
            _max = f[v] + w;
            id = v;
        }
    }
   // cout << u << " " << _max << "\n";
    for(auto a : adj[u])
    {
        int v = a.fi, w = a.se;
        if(u != root && (v == par || v == id)) continue;
        vc.pb(f[v] + w);
    }
}
void Solve()
{
    for(int i=1; i<=n; i++)
    {
        fill(f, f + n + 1, 0);
        vc.clear();
        predfs(i, 0);
        dfs(i, 0, i);
        sort(vc.begin(), vc.end(), greater<int>());
        int res = 0;
        for(int i=0; i<k; i++) res += vc[i];
        cout << res << '\n';
    }
}
int32_t main()
{
  //  freopen("x.inp", "r", stdin);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ReadInput();
    Solve();
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 15 ms 23788 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 15 ms 23788 KB Output is correct
3 Correct 14 ms 23828 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 14 ms 23796 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 15 ms 23788 KB Output is correct
3 Correct 14 ms 23828 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 14 ms 23796 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 66 ms 23892 KB Output is correct
9 Correct 70 ms 23964 KB Output is correct
10 Correct 50 ms 23920 KB Output is correct
11 Correct 62 ms 23904 KB Output is correct
12 Correct 61 ms 23908 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 15 ms 23788 KB Output is correct
3 Correct 14 ms 23828 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 14 ms 23796 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 66 ms 23892 KB Output is correct
9 Correct 70 ms 23964 KB Output is correct
10 Correct 50 ms 23920 KB Output is correct
11 Correct 62 ms 23904 KB Output is correct
12 Correct 61 ms 23908 KB Output is correct
13 Correct 264 ms 24012 KB Output is correct
14 Correct 245 ms 24100 KB Output is correct
15 Correct 173 ms 24020 KB Output is correct
16 Correct 237 ms 23996 KB Output is correct
17 Correct 206 ms 23884 KB Output is correct
18 Correct 160 ms 24108 KB Output is correct
19 Correct 284 ms 23892 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1066 ms 32348 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 15 ms 23788 KB Output is correct
3 Correct 14 ms 23828 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 14 ms 23796 KB Output is correct
6 Correct 14 ms 23820 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 66 ms 23892 KB Output is correct
9 Correct 70 ms 23964 KB Output is correct
10 Correct 50 ms 23920 KB Output is correct
11 Correct 62 ms 23904 KB Output is correct
12 Correct 61 ms 23908 KB Output is correct
13 Correct 264 ms 24012 KB Output is correct
14 Correct 245 ms 24100 KB Output is correct
15 Correct 173 ms 24020 KB Output is correct
16 Correct 237 ms 23996 KB Output is correct
17 Correct 206 ms 23884 KB Output is correct
18 Correct 160 ms 24108 KB Output is correct
19 Correct 284 ms 23892 KB Output is correct
20 Execution timed out 1066 ms 32348 KB Time limit exceeded
21 Halted 0 ms 0 KB -