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Submission #959935

# Submission time Handle Problem Language Result Execution time Memory
959935 2024-04-09T10:35:35 Z Trisanu_Das Fireworks (APIO16_fireworks) C++17
26 / 100
 154 ms 2248 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 1e14;
const int MAXN = 505;
 
int n, m, L[MAXN], R[MAXN];
vector<pair<int, int> > adj[MAXN];
ll walk[MAXN], dp[MAXN][MAXN];
 
void precalc(int node){
	for(pair<int, int> x : adj[node]){
		walk[x.first] = walk[node] + x.second;
		precalc(x.first);
	}
}
 
void dfs(int node){
	if(node >= n){
		for(int i = 0; i < n + m; ++i) dp[node][i] = abs(walk[i] - walk[node]);
	}
	for(pair<int, int> x : adj[node]){
		dfs(x.first);
		for(int i = 0; i < n + m; ++i){
			ll mini = inf;
			for(int j = 0; j < n + m; ++j){
				if(x.second + walk[i] - walk[j] >= 0) mini = min(mini, dp[x.first][j] + abs(walk[i] - walk[j]));
			}
			dp[node][i] += mini;
		}
	}
}
 
int main(){
	cin >> n >> m;
	for(int i = 1; i < n + m; ++i){
		int p, c;
		cin >> p >> c, --p;
		adj[p].push_back({i, c});
	}
	precalc(0);
 
 	dfs(0);
	ll ans = inf;
	for(int i = 0; i < n + m; ++i) ans = min(ans, dp[0][i]);
 
	cout << ans;
	return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 712 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 2 ms 604 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 2 ms 604 KB Output is correct
5 Correct 3 ms 808 KB Output is correct
6 Correct 3 ms 1112 KB Output is correct
7 Correct 5 ms 856 KB Output is correct
8 Correct 8 ms 1116 KB Output is correct
9 Correct 9 ms 1116 KB Output is correct
10 Correct 12 ms 1308 KB Output is correct
11 Correct 16 ms 1368 KB Output is correct
12 Correct 21 ms 1352 KB Output is correct
13 Correct 25 ms 1448 KB Output is correct
14 Correct 26 ms 1620 KB Output is correct
15 Correct 33 ms 1620 KB Output is correct
16 Correct 32 ms 1620 KB Output is correct
17 Correct 32 ms 1628 KB Output is correct
18 Correct 33 ms 1624 KB Output is correct
19 Correct 32 ms 1616 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 712 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 808 KB Output is correct
16 Correct 3 ms 1112 KB Output is correct
17 Correct 5 ms 856 KB Output is correct
18 Correct 8 ms 1116 KB Output is correct
19 Correct 9 ms 1116 KB Output is correct
20 Correct 12 ms 1308 KB Output is correct
21 Correct 16 ms 1368 KB Output is correct
22 Correct 21 ms 1352 KB Output is correct
23 Correct 25 ms 1448 KB Output is correct
24 Correct 26 ms 1620 KB Output is correct
25 Correct 33 ms 1620 KB Output is correct
26 Correct 32 ms 1620 KB Output is correct
27 Correct 32 ms 1628 KB Output is correct
28 Correct 33 ms 1624 KB Output is correct
29 Correct 32 ms 1616 KB Output is correct
30 Incorrect 154 ms 2248 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 712 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 2 ms 860 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 2 ms 604 KB Output is correct
15 Correct 3 ms 808 KB Output is correct
16 Correct 3 ms 1112 KB Output is correct
17 Correct 5 ms 856 KB Output is correct
18 Correct 8 ms 1116 KB Output is correct
19 Correct 9 ms 1116 KB Output is correct
20 Correct 12 ms 1308 KB Output is correct
21 Correct 16 ms 1368 KB Output is correct
22 Correct 21 ms 1352 KB Output is correct
23 Correct 25 ms 1448 KB Output is correct
24 Correct 26 ms 1620 KB Output is correct
25 Correct 33 ms 1620 KB Output is correct
26 Correct 32 ms 1620 KB Output is correct
27 Correct 32 ms 1628 KB Output is correct
28 Correct 33 ms 1624 KB Output is correct
29 Correct 32 ms 1616 KB Output is correct
30 Incorrect 154 ms 2248 KB Output isn't correct
31 Halted 0 ms 0 KB -