oj.uz

Submission #791630

# Submission time Handle Problem Language Result Execution time Memory
791630 2023-07-24T08:22:15 Z 박상훈(#10047) Nestabilnost (COI23_nestabilnost) C++17
41 / 100
 175 ms 199032 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int n;

vector<int> adj[5050];
ll dp[5050][5050], ans[5050];
int a[5050], f[5050];

void dfs_naive(int s, int pa = 0){
	for (int i=a[s]+1;i<=n;i++) dp[s][i] = f[i];

	for (auto &v:adj[s]) if (v!=pa){
		dfs_naive(v, s);
		for (int i=a[s]+1;i<=n;i++){
			if (i <= a[v]) dp[s][i] += ans[v];
			else if (a[v]==0 && a[s]+1==i) dp[s][i] += min(ans[v], dp[v][i] - f[i]);
			else if (a[v]>0 && a[s]+1==a[v]) dp[s][i] += min(ans[v], dp[v][i] - f[i]);
			else dp[s][i] += ans[v];
		}
	}

	ans[s] = *min_element(dp[s]+a[s]+1, dp[s]+n+1);
}

int main(){
	scanf("%d", &n);
	for (int i=1;i<=n;i++) scanf("%d", a+i);
	for (int i=1;i<=n;i++) scanf("%d", f+i);
	for (int i=1;i<=n-1;i++){
		int x, y;
		scanf("%d %d", &x, &y);
		adj[x].push_back(y);
		adj[y].push_back(x);
	}

	dfs_naive(1);
	printf("%lld\n", ans[1]);
}

Compilation message

code1.cpp: In function 'int main()':
code1.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
code1.cpp:30:30: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |  for (int i=1;i<=n;i++) scanf("%d", a+i);
      |                         ~~~~~^~~~~~~~~~~
code1.cpp:31:30: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  for (int i=1;i<=n;i++) scanf("%d", f+i);
      |                         ~~~~~^~~~~~~~~~~
code1.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |   scanf("%d %d", &x, &y);
      |   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 198908 KB Output is correct
2 Correct 147 ms 198952 KB Output is correct
3 Correct 131 ms 187380 KB Output is correct
4 Correct 149 ms 199032 KB Output is correct
5 Correct 142 ms 198852 KB Output is correct
6 Correct 175 ms 198928 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 56 ms 7044 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 198908 KB Output is correct
2 Correct 147 ms 198952 KB Output is correct
3 Correct 131 ms 187380 KB Output is correct
4 Correct 149 ms 199032 KB Output is correct
5 Correct 142 ms 198852 KB Output is correct
6 Correct 175 ms 198928 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 0 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 164 ms 198396 KB Output is correct
15 Correct 153 ms 198400 KB Output is correct
16 Correct 146 ms 198376 KB Output is correct
17 Correct 153 ms 198412 KB Output is correct
18 Correct 147 ms 198336 KB Output is correct
19 Correct 144 ms 198460 KB Output is correct
20 Correct 124 ms 194448 KB Output is correct
21 Correct 136 ms 198284 KB Output is correct
22 Correct 142 ms 198184 KB Output is correct
23 Correct 128 ms 198264 KB Output is correct
24 Correct 130 ms 198288 KB Output is correct
25 Correct 126 ms 194012 KB Output is correct
26 Correct 131 ms 197832 KB Output is correct
27 Correct 131 ms 197276 KB Output is correct

Subtask #5
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 198908 KB Output is correct
2 Correct 147 ms 198952 KB Output is correct
3 Correct 131 ms 187380 KB Output is correct
4 Correct 149 ms 199032 KB Output is correct
5 Correct 142 ms 198852 KB Output is correct
6 Correct 175 ms 198928 KB Output is correct
7 Runtime error 56 ms 7044 KB Execution killed with signal 11
8 Halted 0 ms 0 KB -