oj.uz

답안 #598010

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
598010 2022-07-17T10:21:10 Z OttoTheDino Chase (CEOI17_chase) C++17
40 / 100
 341 ms 524288 KB 
#include <bits/stdc++.h>
using namespace std;

#define rep(i,s,e)                  for (ll i = s; i <= e; ++i)
#define rrep(i,s,e)                 for (ll i = s; i >= e; --i)
#define pb                          push_back
#define pf                          push_front
#define fi                          first
#define se                          second
#define all(a)                      a.begin(), a.end()
#define len(a)                      (ll)a.size()
typedef long long ll;
typedef pair<ll, ll> ii;
typedef pair<ll, ll> pll;
typedef vector<ii> vii;
typedef vector<ll> vi;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;

const ll mx = 1e5, mxv = 100;
ll p[mx+1], s[mx+1];
vi adj[mx+1];
map<ll,ll> dp[mx+1][mxv+1];

ll dfs (ll u, ll par, ll cnt)  {
    if (cnt==0) return 0;

    if (dp[u][cnt].find(par)!=dp[u][cnt].end()) return dp[u][cnt][par];

    dp[u][cnt][par] = s[u]-p[par];

    for (int v : adj[u]) {
        if (v==par) continue;
        dp[u][cnt][par] = max(dp[u][cnt][par], max(s[u]-p[par]+dfs(v,u,cnt-1), dfs(v,u,cnt))); 
    }

    return dp[u][cnt][par];
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    ll n, l; cin >> n >> l;

    rep (i,1,n) cin >> p[i];

    rep (i,1,n-1) {
        ll u, v; cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }

    rep (i,1,n) for (int v : adj[i]) s[i] += p[v];

    ll ans = 0;
    rep (i,1,n) {
        ans = max(ans, dfs (i, 0, l));
    }

    cout << ans << "\n";

    return 0;
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 206 ms 476948 KB Output is correct
2 Correct 213 ms 477084 KB Output is correct
3 Correct 206 ms 476956 KB Output is correct
4 Correct 205 ms 477028 KB Output is correct
5 Correct 209 ms 477260 KB Output is correct
6 Correct 230 ms 477032 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 206 ms 476948 KB Output is correct
2 Correct 213 ms 477084 KB Output is correct
3 Correct 206 ms 476956 KB Output is correct
4 Correct 205 ms 477028 KB Output is correct
5 Correct 209 ms 477260 KB Output is correct
6 Correct 230 ms 477032 KB Output is correct
7 Correct 229 ms 486060 KB Output is correct
8 Correct 213 ms 477824 KB Output is correct
9 Correct 341 ms 477668 KB Output is correct
10 Correct 208 ms 478416 KB Output is correct
11 Correct 209 ms 478412 KB Output is correct
12 Correct 214 ms 477916 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 268 ms 524288 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 206 ms 476948 KB Output is correct
2 Correct 213 ms 477084 KB Output is correct
3 Correct 206 ms 476956 KB Output is correct
4 Correct 205 ms 477028 KB Output is correct
5 Correct 209 ms 477260 KB Output is correct
6 Correct 230 ms 477032 KB Output is correct
7 Correct 229 ms 486060 KB Output is correct
8 Correct 213 ms 477824 KB Output is correct
9 Correct 341 ms 477668 KB Output is correct
10 Correct 208 ms 478416 KB Output is correct
11 Correct 209 ms 478412 KB Output is correct
12 Correct 214 ms 477916 KB Output is correct
13 Runtime error 268 ms 524288 KB Execution killed with signal 9
14 Halted 0 ms 0 KB -