Submission #676153

#	Time	Username	Problem	Language	Result	Execution time	Memory
676153		vovamr	Paths (RMI21_paths)	C++17	36 / 100	1084 ms	19852 KiB

Main

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) 	(x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }

const int N = 1e5 + 10;
const int lg = 17;

int n, k;
ve<pii> gr[N];

int up[N][lg];

ll d[N];
ll mx[N], act[N];

inline void dfs(int v, int p) {
	if (v == p) d[v] = 0;

	up[v][0] = p;
	for (int i = 1; i < lg; ++i) up[v][i] = up[up[v][i - 1]][i - 1];

	mx[v] = v;
	for (auto &[to, w] : gr[v]) {
		if (to == p) continue;
		d[to] = d[v] + w;
		dfs(to, v);
		if (d[mx[to]] > d[mx[v]]) mx[v] = mx[to];
	}
}
inline void dfs1(int v, int p) {
	if (v != p && sz(gr[v]) == 1) {
		int u = v;
		for (int i = lg - 1; ~i; --i) {
			if (mx[up[u][i]] == v) {
				u = up[u][i];
			}
		}
		act[v] = d[v] - d[up[u][0]];
	}
	for (auto &[to, w] : gr[v]) {
		if (to == p) continue;
		dfs1(to, v);
	}
}

inline void solve() {
	cin >> n >> k;
	for (int i = 1; i < n; ++i) {
		int v, u, c;
		cin >> v >> u >> c, --v, --u;
		gr[v].pb({u, c}), gr[u].pb({v, c});
	}

	for (int i = 0; i < n; ++i) {

		multiset<ll> st;

		dfs(i, i);
		dfs1(i, i);

		for (int v = 0; v < n; ++v) {
			if (sz(gr[v]) == 1 && v != i) {
				st.insert(act[v]);
			}
		}

		ll sum = 0, c = 0;
		while (c < k) {
			sum += *st.rbegin();
			st.erase(--st.end());
			++c;
		}
		cout << sum << '\n';
	}
}

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int q = 1; // cin >> q;
	while (q--) solve();
	cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}

• Subtask 1: 8 / 8
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 12
• Subtask 6: 0 / 32