#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vl = vector<ll>;
#define pb push_back
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define lb lower_bound
#define ub upper_bound
using pi = pair<int,int>;
#define f first
#define s second
#define mp make_pair
const int MX = 505;
const int MOD = (int) (1e9 + 7);
const ll INF = (ll) 1e18;
namespace output {
void pr(int x) {
cout << x;
}
void pr(long x) {
cout << x;
}
void pr(ll x) {
cout << x;
}
void pr(unsigned x) {
cout << x;
}
void pr(unsigned long x) {
cout << x;
}
void pr(unsigned long long x) {
cout << x;
}
void pr(float x) {
cout << x;
}
void pr(double x) {
cout << x;
}
void pr(long double x) {
cout << x;
}
void pr(char x) {
cout << x;
}
void pr(const char * x) {
cout << x;
}
void pr(const string & x) {
cout << x;
}
void pr(bool x) {
pr(x ? "true" : "false");
}
template < class T1, class T2 > void pr(const pair < T1, T2 > & x);
template < class T > void pr(const T & x);
template < class T, class...Ts > void pr(const T & t,
const Ts & ...ts) {
pr(t);
pr(ts...);
}
template < class T1, class T2 > void pr(const pair < T1, T2 > & x) {
pr("{", x.f, ", ", x.s, "}");
}
template < class T > void pr(const T & x) {
pr("{"); // const iterator needed for vector<bool>
bool fst = 1;
for (const auto & a: x) pr(!fst ? ", " : "", a), fst = 0;
pr("}");
}
void ps() {
pr("\n");
} // print w/ spaces
template < class T, class...Ts > void ps(const T & t,
const Ts & ...ts) {
pr(t);
if (sizeof...(ts)) pr(" ");
ps(ts...);
}
void pc() {
cout << "]" << endl;
} // debug w/ commas
template < class T, class...Ts > void pc(const T & t,
const Ts & ...ts) {
pr(t);
if (sizeof...(ts)) pr(", ");
pc(ts...);
}
#define dbg(x...) pr("[", #x, "] = ["), pc(x);
}
#ifdef mikey
using namespace output;
#else
using namespace output;
#define dbg(x...)
#endif
vi adj[MX];
int a[MX];
int nxt[MX * MX];
int pos[MX];
ll dp[MX * MX][MX];
int fst[MX];
int n, m;
vi order;
void dfs(int v, int p) {
for (int to : adj[v]) {
if (to != p) {
order.pb(to);
dfs(to, v);
order.pb(v);
}
}
}
int main(){
#ifdef mikey
freopen("a.in", "r", stdin);
#endif
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m;
for (int i = 0; i < n; i++) cin >> a[i];
for (int i = 0; i < n - 1; i++) {
int u, v; cin >> u >> v;
u--, v--;
adj[u].pb(v), adj[v].pb(u);
}
order.pb(0);
dfs(0, -1);
assert(sz(order) <= n * n);
// dbg(order);
memset(pos, -1, sizeof(pos));
for (int i = 0; i <= sz(order); i++) for (int j = 0; j <= m; j++) dp[i][j] = -INF;
for (int i = sz(order) - 1; i >= 0; i--) {
nxt[i] = pos[order[i]];
pos[order[i]] = i;
}
ll ans = 0;
dp[0][0] = 0;
for (int i = 0; i < sz(order); i++) {
if (i == pos[order[i]]) {
for (int j = m - 1; j >= 0; j--) {
if (dp[i][j] == -INF) continue;
dp[i][j + 1] = max(dp[i][j + 1], dp[i][j] + a[order[i]]);
}
}
for (int j = 0; j <= m; j++) {
if (dp[i][j] == -INF) continue;
if (j + 1 <= m) dp[i + 1][j + 1] = max(dp[i + 1][j + 1], dp[i][j]);
if (nxt[i] != -1) {
dp[nxt[i]][j] = max(dp[nxt[i]][j], dp[i][j]);
}
}
}
for (int i = 0; i <= sz(order); i++) for (int j = 0; j <= m; j++) ans = max(ans, dp[i][j]);
cout << ans << '\n';
}
Compilation message
dostavljac.cpp:108: warning: "dbg" redefined
108 | #define dbg(x...)
|
dostavljac.cpp:101: note: this is the location of the previous definition
101 | #define dbg(x...) pr("[", #x, "] = ["), pc(x);
|
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
620 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
748 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
876 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
1132 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
1516 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
2 ms |
2048 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
3 ms |
2796 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
5 ms |
3596 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
6 ms |
4332 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
