oj.uz

Submission #717930

# Submission time Handle Problem Language Result Execution time Memory
717930 2023-04-02T21:08:49 Z vjudge1 Paths (RMI21_paths) C++17
19 / 100
 397 ms 6728 KB 
#include "bits/stdc++.h"
#define ll long long
using namespace std;
const ll mod = 1000000007;

vector<pair<int, ll>> v[2001];
ll b[2001], par[2001], edge[2001][2001];
bool vis[2001];
priority_queue<pair<ll, int>> pq;

void dfs(int x) {
    vis[x] = 1;
    for(auto [y, z] : v[x]) {
        if(!vis[y]) {
            par[y] = x;
            b[y] = b[x] + z;
            pq.push({b[y], y});
            dfs(y);
        }
    }
}

ll idk1(int x) {
    ll ans = 0;
    while(par[x]) {
        if(!edge[x][par[x]])
            break;
        ans += edge[x][par[x]];
        x = par[x];
    }
    return ans;
}

void idk2(int x) {
    while(par[x]) {
        if(!edge[x][par[x]])
            break;
        edge[x][par[x]] = edge[par[x]][x] = 0;
        x = par[x];
    }
}

signed main () {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    // freopen("cowland.in","r",stdin);
    // freopen("cowland.out","w",stdout);

    int n, kk;
    cin >> n >> kk;
    for(int i = 0; i < n - 1; i++) {
        ll a, b, c;
        cin >> a >> b >> c;
        v[a].push_back({b, c});
        v[b].push_back({a, c});
    }
    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= n; j++) {
            vis[j] = 0;
            for(auto [k, val] : v[j])
                edge[j][k] = val;
        }
        while(!pq.empty())
            pq.pop();
        par[i] = b[i] = 0;
        dfs(i);
        ll k = kk, ans = 0;
        while(k--) {
            ll val = pq.top().first, x = pq.top().second;
            pq.pop();
            ll y = idk1(x);
            while(y != val) {
                pq.push({y, x});
                val = pq.top().first, x = pq.top().second;
                pq.pop();
                y = idk1(x);
            }
            ans += val;
            idk2(x);
        }
        cout << ans << "\n";
    }

    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 468 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 10 ms 1300 KB Output is correct
4 Correct 9 ms 1288 KB Output is correct
5 Correct 7 ms 1236 KB Output is correct
6 Correct 9 ms 1296 KB Output is correct
7 Correct 9 ms 1304 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 10 ms 1300 KB Output is correct
4 Correct 9 ms 1288 KB Output is correct
5 Correct 7 ms 1236 KB Output is correct
6 Correct 9 ms 1296 KB Output is correct
7 Correct 9 ms 1304 KB Output is correct
8 Correct 279 ms 6112 KB Output is correct
9 Correct 222 ms 6544 KB Output is correct
10 Incorrect 397 ms 6728 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 10 ms 1300 KB Output is correct
4 Correct 9 ms 1288 KB Output is correct
5 Correct 7 ms 1236 KB Output is correct
6 Correct 9 ms 1296 KB Output is correct
7 Correct 9 ms 1304 KB Output is correct
8 Correct 279 ms 6112 KB Output is correct
9 Correct 222 ms 6544 KB Output is correct
10 Incorrect 397 ms 6728 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 10 ms 1300 KB Output is correct
4 Correct 9 ms 1288 KB Output is correct
5 Correct 7 ms 1236 KB Output is correct
6 Correct 9 ms 1296 KB Output is correct
7 Correct 9 ms 1304 KB Output is correct
8 Correct 279 ms 6112 KB Output is correct
9 Correct 222 ms 6544 KB Output is correct
10 Incorrect 397 ms 6728 KB Output isn't correct
11 Halted 0 ms 0 KB -