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Submission #559126

# Submission time Handle Problem Language Result Execution time Memory
559126 2022-05-09T12:29:56 Z acm Road Closures (APIO21_roads) C++14
31 / 100
 2000 ms 24188 KB 
#include <bits/stdc++.h>
#define FOR(i, l, r) for (int i = (l); i <= (r); ++i)
#define REP(i, l, r) for (int i = (l); i < (r); ++i)
#define FORD(i, r, l) for (int i = (r); i >= (l); --i)
#define REPD(i, r, l) for (int i = (r)-1; i >= (l); --i)
#define pii pair<int, int>
using namespace std;
const int N = 1e5 + 5, Ns4 = 200005;
int n;
long long ans[N];
long long dpx[N], val[N];
int sz[Ns4];
long long dd[Ns4][2];
vector<pii> S[N];

void DFS(int u, int p, int max_sz) {
  int now_sz = min(sz[u], max_sz);
  vector<int> Q;
  long long sum = 0, pre_sum = 0;
  for (auto [c, v] : S[u])
    if (v != p) {
      DFS(v, u, max_sz);
      long long xx = dd[v][1] + c;
      long long yy = dd[v][0];
      sum += xx;
      Q.push_back(yy - xx);
    }

  sort(Q.begin(), Q.end());

  pre_sum = 1e15;
  REP(i, 0, now_sz) {
    pre_sum = sum;
    sum += min(0, Q[i]);
  }
  if (now_sz < max_sz) pre_sum = sum;
  dd[u][0] = pre_sum;
  dd[u][1] = sum;
}
void calc(int i) {
  DFS(0, 0, i);
  ans[i] = dd[0][1];
}
void dnc(int l = 1, int r = n - 2, int L = ans[n - 1], int R = ans[0]) {
  if (l > r) return;
  if (L == R) {
    for (int i = l; i <= r; i++) ans[i] = L;
    return;
  }
  int tm = (l + r) / 2;
  calc(tm);
  dnc(l, tm - 1, ans[tm], R);
  dnc(tm + 1, r, L, ans[tm]);
}
void sub34() {
  REP(i, 0, n) {
    sz[i] = S[i].size() - 1;
    if (i == 0) ++sz[i];
  }
  calc(0);
  calc(n - 1);
  if (1 <= n - 2) dnc();
}

vector<long long> minimum_closure_costs(int N, vector<int> U, vector<int> V,
                                        vector<int> W) {
  n = N;
  REP(i, 0, n - 1) {
    S[U[i]].emplace_back(W[i], V[i]);
    S[V[i]].emplace_back(W[i], U[i]);
  }
  sub34();
  vector<long long> ret(n);
  REP(i, 0, n) ret[i] = ans[i];
  return ret;
}

Compilation message

roads.cpp: In function 'void DFS(int, int, int)':
roads.cpp:20:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   20 |   for (auto [c, v] : S[u])
      |             ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 151 ms 2844 KB Output is correct
3 Correct 173 ms 2848 KB Output is correct
4 Correct 82 ms 2848 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 3 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 83 ms 2832 KB Output is correct
9 Correct 114 ms 2852 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 3 ms 2644 KB Output is correct
12 Execution timed out 2083 ms 8400 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 170 ms 20520 KB Output is correct
3 Correct 169 ms 22752 KB Output is correct
4 Correct 178 ms 24188 KB Output is correct
5 Correct 205 ms 24176 KB Output is correct
6 Correct 3 ms 3028 KB Output is correct
7 Correct 3 ms 3028 KB Output is correct
8 Correct 3 ms 3028 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 94 ms 15544 KB Output is correct
13 Correct 174 ms 24072 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 144 ms 21956 KB Output is correct
16 Correct 183 ms 24180 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2644 KB Output is correct
15 Correct 3 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 3 ms 2644 KB Output is correct
20 Correct 3 ms 2644 KB Output is correct
21 Correct 3 ms 2644 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2644 KB Output is correct
15 Correct 3 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 3 ms 2644 KB Output is correct
20 Correct 3 ms 2644 KB Output is correct
21 Correct 3 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 4 ms 2772 KB Output is correct
24 Correct 7 ms 2772 KB Output is correct
25 Correct 4 ms 2836 KB Output is correct
26 Correct 7 ms 2772 KB Output is correct
27 Correct 28 ms 2868 KB Output is correct
28 Correct 19 ms 2880 KB Output is correct
29 Correct 5 ms 2816 KB Output is correct
30 Correct 8 ms 2864 KB Output is correct
31 Correct 8 ms 2772 KB Output is correct
32 Correct 66 ms 2860 KB Output is correct
33 Correct 4 ms 3048 KB Output is correct
34 Correct 4 ms 3028 KB Output is correct
35 Correct 4 ms 3004 KB Output is correct
36 Correct 165 ms 2844 KB Output is correct
37 Correct 185 ms 2848 KB Output is correct
38 Correct 83 ms 2864 KB Output is correct
39 Correct 2 ms 2644 KB Output is correct
40 Correct 1 ms 2644 KB Output is correct
41 Correct 3 ms 2644 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 4 ms 2644 KB Output is correct
44 Correct 4 ms 2644 KB Output is correct
45 Correct 2 ms 2644 KB Output is correct
46 Correct 2 ms 2644 KB Output is correct
47 Correct 2 ms 2644 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 2 ms 2644 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 3 ms 2644 KB Output is correct
52 Correct 3 ms 2644 KB Output is correct
53 Correct 4 ms 2824 KB Output is correct
54 Correct 4 ms 2772 KB Output is correct
55 Correct 22 ms 2880 KB Output is correct
56 Correct 89 ms 2832 KB Output is correct
57 Correct 126 ms 2856 KB Output is correct
58 Correct 2 ms 2644 KB Output is correct
59 Correct 2 ms 2644 KB Output is correct
60 Correct 2 ms 2644 KB Output is correct
61 Correct 2 ms 2644 KB Output is correct
62 Correct 2 ms 2644 KB Output is correct
63 Correct 2 ms 2644 KB Output is correct
64 Correct 5 ms 2772 KB Output is correct
65 Correct 6 ms 2772 KB Output is correct
66 Correct 7 ms 2772 KB Output is correct
67 Correct 45 ms 2852 KB Output is correct
68 Correct 5 ms 2772 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 519 ms 11916 KB Output is correct
2 Correct 610 ms 11724 KB Output is correct
3 Execution timed out 2062 ms 11424 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 519 ms 11916 KB Output is correct
2 Correct 610 ms 11724 KB Output is correct
3 Execution timed out 2062 ms 11424 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 151 ms 2844 KB Output is correct
3 Correct 173 ms 2848 KB Output is correct
4 Correct 82 ms 2848 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 3 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 83 ms 2832 KB Output is correct
9 Correct 114 ms 2852 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 3 ms 2644 KB Output is correct
12 Execution timed out 2083 ms 8400 KB Time limit exceeded
13 Halted 0 ms 0 KB -