# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
347743 | 2021-01-13T10:52:58 Z | parsabahrami | Beads and wires (APIO14_beads) | C++17 | 4 ms | 4972 KB |
// Call my Name and Save me from The Dark #include <bits/stdc++.h> using namespace std; typedef long long int ll; typedef pair<int, int> pii; #define SZ(x) (int) x.size() #define F first #define S second const int N = 2e5 + 10; ll dp[2][N]; int n; vector<pair<int, ll>> adj[N]; void DFS(int v, int p = -1) { dp[0][v] = 0, dp[1][v] = -1e18; for (pair<int, ll> u : adj[v]) { if (u.F != p) DFS(u.F, v); } ll sum = 0; for (pair<int, ll> u : adj[v]) if (u.F != p) { dp[0][v] = max(dp[0][v] + max(dp[0][u.F], dp[1][u.F] + u.S), dp[1][v] + dp[0][u.F] + u.S); dp[1][v] = max(dp[1][v] + max(dp[0][u.F], dp[1][u.F] + u.S), sum + dp[0][u.F] + u.S); sum += max(dp[0][u.F], dp[1][u.F] + u.S); } dp[0][v] = max(dp[0][v], sum); //printf("%d %d %d\n", v, dp[0][v], dp[1][v]); } int main() { scanf("%d", &n); for (int i = 1; i < n; i++) { int u, v; ll w; scanf("%d%d%lld", &u, &v, &w); adj[u].push_back({v, w}); adj[v].push_back({u, w}); } DFS(1); printf("%lld\n", dp[0][1]); return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 3 ms | 4972 KB | Output is correct |
2 | Correct | 4 ms | 4972 KB | Output is correct |
3 | Correct | 3 ms | 4972 KB | Output is correct |
4 | Correct | 3 ms | 4972 KB | Output is correct |
5 | Correct | 4 ms | 4972 KB | Output is correct |
6 | Incorrect | 3 ms | 4972 KB | Output isn't correct |
7 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 3 ms | 4972 KB | Output is correct |
2 | Correct | 4 ms | 4972 KB | Output is correct |
3 | Correct | 3 ms | 4972 KB | Output is correct |
4 | Correct | 3 ms | 4972 KB | Output is correct |
5 | Correct | 4 ms | 4972 KB | Output is correct |
6 | Incorrect | 3 ms | 4972 KB | Output isn't correct |
7 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 3 ms | 4972 KB | Output is correct |
2 | Correct | 4 ms | 4972 KB | Output is correct |
3 | Correct | 3 ms | 4972 KB | Output is correct |
4 | Correct | 3 ms | 4972 KB | Output is correct |
5 | Correct | 4 ms | 4972 KB | Output is correct |
6 | Incorrect | 3 ms | 4972 KB | Output isn't correct |
7 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 3 ms | 4972 KB | Output is correct |
2 | Correct | 4 ms | 4972 KB | Output is correct |
3 | Correct | 3 ms | 4972 KB | Output is correct |
4 | Correct | 3 ms | 4972 KB | Output is correct |
5 | Correct | 4 ms | 4972 KB | Output is correct |
6 | Incorrect | 3 ms | 4972 KB | Output isn't correct |
7 | Halted | 0 ms | 0 KB | - |