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Submission #114392

# Submission time Handle Problem Language Result Execution time Memory
114392 2019-06-01T07:51:15 Z Mamnoon_Siam Designated Cities (JOI19_designated_cities) C++17
39 / 100
 771 ms 132996 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 2e5 + 5;
using ll = long long;

int magic;
int n;
vector<ll> dp1[maxn], dp2[maxn];
int A[maxn], B[maxn];
ll C[maxn], D[maxn];
ll pre[maxn];
vector<int> g[maxn];
ll tot_down = 0;
int sz[maxn];

int other(int id, int u) {
	return A[id] ^ B[id] ^ u;
}

ll cost(int id, int from, int to) {
	if(A[id] == from) return C[id];
	else return D[id];
}

void dfs(int u, int parent, ll prefix_sum) {
	pre[u] = prefix_sum;
	for(int i : g[u]) {
		int v = A[i] ^ B[i] ^ u;
		if(parent != v) {
			dfs(v, u, prefix_sum + cost(i, v, u) - cost(i, u, v));
		}
	}
	sz[u] = 1;
	ll tmp[magic + 15];
	for(int i : g[u]) {
		int v = A[i] ^ B[i] ^ u;
		if(v == parent) continue;
		ll w = cost(i, u, v);
		tot_down += w;
		for(int a = 1; a <= min(magic, sz[u]); a++) {
			for(int b = 1; b <= min(magic, sz[v]); b++) {
				dp1[u][a + b] = max(dp1[u][a + b], dp2[u][a] + dp2[v][b] + w);
			}
		}
		for(int i = 0; i <= min(magic, sz[u] + sz[v]); i++)
			tmp[i] = 0;
		for(int a = 0; a <= min(sz[u], magic); a++) {
			for(int b = 1; b <= min(sz[v], magic); b++) {
				tmp[a + b] = max(tmp[a + b], dp2[u][a] + dp2[v][b] + w);
			}
		}
		sz[u] += sz[v];
		for(int i = 0; i <= min(sz[u], magic); i++) {
			dp2[u][i] = max(dp2[u][i], tmp[i]);
		}
	}
}

int main(int argc, char const *argv[])
{
	cin >> n;
	if(n > 2000) magic = 5;
	else magic = 2e3 + 2;
	for(int i = 1; i <= n; i++) {
		dp1[i].assign(magic + 15, 0);
		dp2[i].assign(magic + 15, 0);
	}
	for(int i = 1; i < n; i++) {
		cin >> A[i] >> B[i] >> C[i] >> D[i];
		g[A[i]].emplace_back(i);
		g[B[i]].emplace_back(i);
	}
	dfs(1, -1, 0);
	int q; cin >> q;
	while(q--) {
		int k;
		cin >> k;
		ll ans = LLONG_MAX;
		for(int i = 1; i <= n; i++) {
			ans = min(ans, tot_down - dp1[i][min(k, sz[i])] + pre[i]);
		}
		ans = max(0LL, ans);
		cout << ans << endl;
	}
	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14592 KB Output is correct
2 Correct 14 ms 14976 KB Output is correct
3 Correct 14 ms 14976 KB Output is correct
4 Correct 14 ms 14976 KB Output is correct
5 Correct 14 ms 14976 KB Output is correct
6 Correct 14 ms 14976 KB Output is correct
7 Correct 15 ms 14948 KB Output is correct
8 Correct 14 ms 14976 KB Output is correct
9 Correct 13 ms 14976 KB Output is correct
10 Correct 13 ms 14948 KB Output is correct
11 Correct 13 ms 14976 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14592 KB Output is correct
2 Correct 665 ms 97736 KB Output is correct
3 Correct 741 ms 123256 KB Output is correct
4 Correct 647 ms 97940 KB Output is correct
5 Correct 637 ms 98052 KB Output is correct
6 Correct 653 ms 101240 KB Output is correct
7 Correct 603 ms 98256 KB Output is correct
8 Correct 730 ms 123856 KB Output is correct
9 Correct 554 ms 98664 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 648 ms 97948 KB Output is correct
3 Correct 771 ms 132996 KB Output is correct
4 Correct 643 ms 101960 KB Output is correct
5 Correct 652 ms 103228 KB Output is correct
6 Correct 666 ms 107284 KB Output is correct
7 Correct 586 ms 103804 KB Output is correct
8 Correct 725 ms 119160 KB Output is correct
9 Correct 569 ms 103656 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14592 KB Output is correct
2 Correct 14 ms 14976 KB Output is correct
3 Correct 14 ms 14976 KB Output is correct
4 Correct 14 ms 14976 KB Output is correct
5 Correct 14 ms 14976 KB Output is correct
6 Correct 14 ms 14976 KB Output is correct
7 Correct 15 ms 14948 KB Output is correct
8 Correct 14 ms 14976 KB Output is correct
9 Correct 13 ms 14976 KB Output is correct
10 Correct 13 ms 14948 KB Output is correct
11 Correct 13 ms 14976 KB Output is correct
12 Correct 14 ms 14592 KB Output is correct
13 Correct 105 ms 77816 KB Output is correct
14 Correct 121 ms 78028 KB Output is correct
15 Correct 106 ms 77816 KB Output is correct
16 Correct 102 ms 77788 KB Output is correct
17 Correct 118 ms 77728 KB Output is correct
18 Correct 108 ms 77816 KB Output is correct
19 Correct 116 ms 77844 KB Output is correct
20 Correct 117 ms 77816 KB Output is correct
21 Correct 118 ms 77788 KB Output is correct
22 Correct 106 ms 77860 KB Output is correct
23 Correct 119 ms 77952 KB Output is correct
24 Correct 118 ms 77944 KB Output is correct
25 Correct 126 ms 78072 KB Output is correct
26 Correct 111 ms 77816 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14592 KB Output is correct
2 Correct 665 ms 97736 KB Output is correct
3 Correct 741 ms 123256 KB Output is correct
4 Correct 647 ms 97940 KB Output is correct
5 Correct 637 ms 98052 KB Output is correct
6 Correct 653 ms 101240 KB Output is correct
7 Correct 603 ms 98256 KB Output is correct
8 Correct 730 ms 123856 KB Output is correct
9 Correct 554 ms 98664 KB Output is correct
10 Correct 13 ms 14464 KB Output is correct
11 Correct 648 ms 97948 KB Output is correct
12 Correct 771 ms 132996 KB Output is correct
13 Correct 643 ms 101960 KB Output is correct
14 Correct 652 ms 103228 KB Output is correct
15 Correct 666 ms 107284 KB Output is correct
16 Correct 586 ms 103804 KB Output is correct
17 Correct 725 ms 119160 KB Output is correct
18 Correct 569 ms 103656 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Incorrect 665 ms 103320 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14592 KB Output is correct
2 Correct 14 ms 14976 KB Output is correct
3 Correct 14 ms 14976 KB Output is correct
4 Correct 14 ms 14976 KB Output is correct
5 Correct 14 ms 14976 KB Output is correct
6 Correct 14 ms 14976 KB Output is correct
7 Correct 15 ms 14948 KB Output is correct
8 Correct 14 ms 14976 KB Output is correct
9 Correct 13 ms 14976 KB Output is correct
10 Correct 13 ms 14948 KB Output is correct
11 Correct 13 ms 14976 KB Output is correct
12 Correct 13 ms 14592 KB Output is correct
13 Correct 665 ms 97736 KB Output is correct
14 Correct 741 ms 123256 KB Output is correct
15 Correct 647 ms 97940 KB Output is correct
16 Correct 637 ms 98052 KB Output is correct
17 Correct 653 ms 101240 KB Output is correct
18 Correct 603 ms 98256 KB Output is correct
19 Correct 730 ms 123856 KB Output is correct
20 Correct 554 ms 98664 KB Output is correct
21 Correct 13 ms 14464 KB Output is correct
22 Correct 648 ms 97948 KB Output is correct
23 Correct 771 ms 132996 KB Output is correct
24 Correct 643 ms 101960 KB Output is correct
25 Correct 652 ms 103228 KB Output is correct
26 Correct 666 ms 107284 KB Output is correct
27 Correct 586 ms 103804 KB Output is correct
28 Correct 725 ms 119160 KB Output is correct
29 Correct 569 ms 103656 KB Output is correct
30 Correct 14 ms 14592 KB Output is correct
31 Correct 105 ms 77816 KB Output is correct
32 Correct 121 ms 78028 KB Output is correct
33 Correct 106 ms 77816 KB Output is correct
34 Correct 102 ms 77788 KB Output is correct
35 Correct 118 ms 77728 KB Output is correct
36 Correct 108 ms 77816 KB Output is correct
37 Correct 116 ms 77844 KB Output is correct
38 Correct 117 ms 77816 KB Output is correct
39 Correct 118 ms 77788 KB Output is correct
40 Correct 106 ms 77860 KB Output is correct
41 Correct 119 ms 77952 KB Output is correct
42 Correct 118 ms 77944 KB Output is correct
43 Correct 126 ms 78072 KB Output is correct
44 Correct 111 ms 77816 KB Output is correct
45 Correct 13 ms 14464 KB Output is correct
46 Incorrect 665 ms 103320 KB Output isn't correct
47 Halted 0 ms 0 KB -