oj.uz

답안 #885525

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
885525 2023-12-10T01:10:37 Z NK_ Designated Cities (JOI19_designated_cities) C++17
13 / 100
 210 ms 45244 KB 
// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>

using namespace std;

#define nl '\n'
#define sz(x) int(x.size())

#define f first
#define s second
#define mp make_pair

#define pb push_back

using ll = long long;
using pi = pair<int, int>;

template<class T> using V = vector<T>;
using vl = V<ll>;
using vpi = V<pi>;
using vi = V<int>;

using E = array<ll, 3>;

int main() {
	cin.tie(0)->sync_with_stdio(0);
		
	int N; cin >> N;

	V<V<E>> adj(N); vi deg(N); ll W = 0;
	for(int i = 0; i < N-1; i++) {
		int u, v, w, wi; cin >> u >> v >> w >> wi; --u, --v;
		adj[u].pb({v, w, wi});
		adj[v].pb({u, wi, w});
		deg[u]++, deg[v]++;
	}

	vl F(N); 
	function<void(int, int)> dfs = [&](int u, int p) {
		for(auto& e : adj[u]) {
			auto [v, tw, fw] = e; if (v == p) continue;
			W += tw; F[v] = F[u] + fw - tw;
			dfs(v, u);
		}
	};

	dfs(0, -1);	

	vl ans(N+1); ans[1] = W + *min_element(begin(F), end(F));

	vi dead(N); auto get = [&](int x) {
		for(auto& e : adj[x]) {
			if (!dead[e[0]]) return mp(e[2], e[0]);
		}

		return mp(-1LL, -1LL);
	};

	priority_queue<pi, vpi, greater<pi>> q; 
	for(int i = 0; i < N; i++) if (deg[i] == 1) {
		q.push(mp(get(i).f, i));
	}

	while(sz(q) > 2) {
		int u, w; tie(w, u) = q.top(); q.pop();
		// cout << u << " " << w << endl;

		dead[u] = 1;
		int p = get(u).s; deg[p]--;

		if (deg[p] == 1) q.push(mp(get(p).f + w, p));
		else {
			// cout << sz(q) << " " << w << endl;
			ans[sz(q)] = ans[sz(q) + 1] + w;
			// cout << ans[sz(q)] << " <= " << ans[sz(q) + 1] << endl;
		}
	}	

	int Q; cin >> Q;
	for(int i = 0; i < Q; i++) {
		int e; cin >> e;
		cout << ans[e] << nl;
	}

	exit(0-0);
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 456 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 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 193 ms 30444 KB Output is correct
3 Correct 137 ms 44624 KB Output is correct
4 Correct 174 ms 29072 KB Output is correct
5 Correct 210 ms 30728 KB Output is correct
6 Correct 208 ms 32584 KB Output is correct
7 Correct 158 ms 29952 KB Output is correct
8 Correct 148 ms 45244 KB Output is correct
9 Correct 138 ms 30976 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 172 ms 30276 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 456 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 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Incorrect 2 ms 604 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 193 ms 30444 KB Output is correct
3 Correct 137 ms 44624 KB Output is correct
4 Correct 174 ms 29072 KB Output is correct
5 Correct 210 ms 30728 KB Output is correct
6 Correct 208 ms 32584 KB Output is correct
7 Correct 158 ms 29952 KB Output is correct
8 Correct 148 ms 45244 KB Output is correct
9 Correct 138 ms 30976 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Incorrect 172 ms 30276 KB Output isn't correct
12 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 456 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 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 193 ms 30444 KB Output is correct
14 Correct 137 ms 44624 KB Output is correct
15 Correct 174 ms 29072 KB Output is correct
16 Correct 210 ms 30728 KB Output is correct
17 Correct 208 ms 32584 KB Output is correct
18 Correct 158 ms 29952 KB Output is correct
19 Correct 148 ms 45244 KB Output is correct
20 Correct 138 ms 30976 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Incorrect 172 ms 30276 KB Output isn't correct
23 Halted 0 ms 0 KB -