oj.uz

Submission #44615

# Submission time Handle Problem Language Result Execution time Memory
44615 2018-04-03T21:56:25 Z ulna Paprike (COI18_paprike) C++11
100 / 100
 95 ms 16744 KB 
#include <bits/stdc++.h>
using namespace std;
 
// why am I so weak
 
int n, k;
int a[100055];
long long dp[100055];
 
vector<int> g[100055];
 
int dfs(int v, int par = -1) {
	dp[v] = a[v];
	int res = 0;
 
	for (auto u : g[v]) if (u != par) {
		res += dfs(u, v);
		dp[v] += dp[u];
	}
 
	sort(g[v].begin(), g[v].end(), [&] (int u, int v) {
		return dp[u] > dp[v];
	});
 
	for (auto u : g[v]) if (u != par) {
		if (dp[v] <= k) break;
 
		res++;
		dp[v] -= dp[u];
	}
 
	return res;
}
int main() {
	cin >> n >> k;
 
	for (int i = 0; i < n; i++) scanf("%d", &a[i]);
 
	for (int i = 0; i + 1 < n; i++) {
		int x, y;
		scanf("%d %d", &x, &y);
		x--, y--;
 
		g[x].push_back(y);
		g[y].push_back(x);
	}
 
	printf("%d\n", dfs(0));
 
	return 0;
}

Compilation message

paprike.cpp: In function 'int main()':
paprike.cpp:37:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 0; i < n; i++) scanf("%d", &a[i]);
                              ~~~~~^~~~~~~~~~~~~
paprike.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &y);
   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2796 KB Output is correct
3 Correct 3 ms 2796 KB Output is correct
4 Correct 3 ms 2796 KB Output is correct
5 Correct 3 ms 2796 KB Output is correct
6 Correct 3 ms 2856 KB Output is correct
7 Correct 4 ms 2856 KB Output is correct
8 Correct 3 ms 2856 KB Output is correct
9 Correct 3 ms 2856 KB Output is correct
10 Correct 4 ms 2856 KB Output is correct
11 Correct 4 ms 2856 KB Output is correct
12 Correct 3 ms 2856 KB Output is correct
13 Correct 3 ms 2856 KB Output is correct
14 Correct 3 ms 2856 KB Output is correct
15 Correct 3 ms 2856 KB Output is correct
16 Correct 4 ms 2868 KB Output is correct
17 Correct 3 ms 2868 KB Output is correct
18 Correct 3 ms 2868 KB Output is correct
19 Correct 4 ms 2868 KB Output is correct
20 Correct 3 ms 2868 KB Output is correct
21 Correct 4 ms 3004 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 16724 KB Output is correct
2 Correct 66 ms 16724 KB Output is correct
3 Correct 68 ms 16724 KB Output is correct
4 Correct 86 ms 16744 KB Output is correct
5 Correct 72 ms 16744 KB Output is correct
6 Correct 71 ms 16744 KB Output is correct
7 Correct 67 ms 16744 KB Output is correct
8 Correct 66 ms 16744 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2796 KB Output is correct
3 Correct 3 ms 2796 KB Output is correct
4 Correct 3 ms 2796 KB Output is correct
5 Correct 3 ms 2796 KB Output is correct
6 Correct 3 ms 2856 KB Output is correct
7 Correct 4 ms 2856 KB Output is correct
8 Correct 3 ms 2856 KB Output is correct
9 Correct 3 ms 2856 KB Output is correct
10 Correct 4 ms 2856 KB Output is correct
11 Correct 4 ms 2856 KB Output is correct
12 Correct 3 ms 2856 KB Output is correct
13 Correct 3 ms 2856 KB Output is correct
14 Correct 3 ms 2856 KB Output is correct
15 Correct 3 ms 2856 KB Output is correct
16 Correct 4 ms 2868 KB Output is correct
17 Correct 3 ms 2868 KB Output is correct
18 Correct 3 ms 2868 KB Output is correct
19 Correct 4 ms 2868 KB Output is correct
20 Correct 3 ms 2868 KB Output is correct
21 Correct 4 ms 3004 KB Output is correct
22 Correct 5 ms 16744 KB Output is correct
23 Correct 4 ms 16744 KB Output is correct
24 Correct 4 ms 16744 KB Output is correct
25 Correct 4 ms 16744 KB Output is correct
26 Correct 4 ms 16744 KB Output is correct
27 Correct 4 ms 16744 KB Output is correct
28 Correct 4 ms 16744 KB Output is correct
29 Correct 4 ms 16744 KB Output is correct
30 Correct 4 ms 16744 KB Output is correct
31 Correct 4 ms 16744 KB Output is correct
32 Correct 4 ms 16744 KB Output is correct
33 Correct 5 ms 16744 KB Output is correct
34 Correct 5 ms 16744 KB Output is correct
35 Correct 4 ms 16744 KB Output is correct
36 Correct 4 ms 16744 KB Output is correct
37 Correct 4 ms 16744 KB Output is correct
38 Correct 4 ms 16744 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 3 ms 2796 KB Output is correct
3 Correct 3 ms 2796 KB Output is correct
4 Correct 3 ms 2796 KB Output is correct
5 Correct 3 ms 2796 KB Output is correct
6 Correct 3 ms 2856 KB Output is correct
7 Correct 4 ms 2856 KB Output is correct
8 Correct 3 ms 2856 KB Output is correct
9 Correct 3 ms 2856 KB Output is correct
10 Correct 4 ms 2856 KB Output is correct
11 Correct 4 ms 2856 KB Output is correct
12 Correct 3 ms 2856 KB Output is correct
13 Correct 3 ms 2856 KB Output is correct
14 Correct 3 ms 2856 KB Output is correct
15 Correct 3 ms 2856 KB Output is correct
16 Correct 4 ms 2868 KB Output is correct
17 Correct 3 ms 2868 KB Output is correct
18 Correct 3 ms 2868 KB Output is correct
19 Correct 4 ms 2868 KB Output is correct
20 Correct 3 ms 2868 KB Output is correct
21 Correct 4 ms 3004 KB Output is correct
22 Correct 70 ms 16724 KB Output is correct
23 Correct 66 ms 16724 KB Output is correct
24 Correct 68 ms 16724 KB Output is correct
25 Correct 86 ms 16744 KB Output is correct
26 Correct 72 ms 16744 KB Output is correct
27 Correct 71 ms 16744 KB Output is correct
28 Correct 67 ms 16744 KB Output is correct
29 Correct 66 ms 16744 KB Output is correct
30 Correct 5 ms 16744 KB Output is correct
31 Correct 4 ms 16744 KB Output is correct
32 Correct 4 ms 16744 KB Output is correct
33 Correct 4 ms 16744 KB Output is correct
34 Correct 4 ms 16744 KB Output is correct
35 Correct 4 ms 16744 KB Output is correct
36 Correct 4 ms 16744 KB Output is correct
37 Correct 4 ms 16744 KB Output is correct
38 Correct 4 ms 16744 KB Output is correct
39 Correct 4 ms 16744 KB Output is correct
40 Correct 4 ms 16744 KB Output is correct
41 Correct 5 ms 16744 KB Output is correct
42 Correct 5 ms 16744 KB Output is correct
43 Correct 4 ms 16744 KB Output is correct
44 Correct 4 ms 16744 KB Output is correct
45 Correct 4 ms 16744 KB Output is correct
46 Correct 4 ms 16744 KB Output is correct
47 Correct 65 ms 16744 KB Output is correct
48 Correct 85 ms 16744 KB Output is correct
49 Correct 65 ms 16744 KB Output is correct
50 Correct 65 ms 16744 KB Output is correct
51 Correct 85 ms 16744 KB Output is correct
52 Correct 82 ms 16744 KB Output is correct
53 Correct 95 ms 16744 KB Output is correct
54 Correct 86 ms 16744 KB Output is correct
55 Correct 72 ms 16744 KB Output is correct
56 Correct 65 ms 16744 KB Output is correct
57 Correct 50 ms 16744 KB Output is correct