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Submission #234395

# Submission time Handle Problem Language Result Execution time Memory
234395 2020-05-24T06:56:37 Z AlexLuchianov Fireworks (APIO16_fireworks) C++14
100 / 100
 539 ms 69752 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cmath>
#include <queue>

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

class Slope{
public:
  ll a;
  ll b;
  std::priority_queue<ll> pq;
  Slope(){
    a = b = 0;
  }
  int size(){
    return pq.size();
  }
  ll top(){
    return pq.top();
  }
  void pop(){
    pq.pop();
  }
  void push(ll val){
    pq.push(val);
  }

  void flatten(){
    while(1 < a){
      a--;
      b += pq.top();
      pq.pop();
    }
  }

  void shift(ll val){
    assert(a == 1);
    ll p1 = pq.top();
    pq.pop();
    ll p2 = pq.top();
    pq.pop();
    pq.push(p2 + val);
    pq.push(p1 + val);
    b -= val;
  }
};

void _add(Slope &x, Slope &y){
  if(x.size() < y.size())
    std::swap(x, y);
  x.a += y.a;
  x.b += y.b;
  while(0 < y.size()){
    x.push(y.top());
    y.pop();
  }
}

int const nmax = 300000;
std::vector<int> g[1 + nmax];
int upper[1 + nmax];

Slope dp[1 + nmax];

void dfs(int node){
  if(g[node].size() == 0){
    dp[node].push(0);
    dp[node].push(0);
    dp[node].a = 1;
    dp[node].b = 0;
  }
  for(int h = 0; h < g[node].size(); h++){
    int to = g[node][h];
    dfs(to);
    _add(dp[node], dp[to]);
  }

  dp[node].flatten();
  dp[node].shift(upper[node]);
}

int main()
{
  int n, m;
  std::cin >> n >> m;
  for(int i = 2;i <= n + m; i++){
    int far;
    std::cin >> far >> upper[i];
    g[far].push_back(i);
  }
  dfs(1);
  std::cout << dp[1].top() + dp[1].b;
  return 0;
}

Compilation message

fireworks.cpp: In function 'void dfs(int)':
fireworks.cpp:77:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int h = 0; h < g[node].size(); h++){
                  ~~^~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 21504 KB Output is correct
2 Correct 17 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 17 ms 21504 KB Output is correct
6 Correct 19 ms 21504 KB Output is correct
7 Correct 17 ms 21504 KB Output is correct
8 Correct 19 ms 21504 KB Output is correct
9 Correct 17 ms 21504 KB Output is correct
10 Correct 18 ms 21504 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 21504 KB Output is correct
2 Correct 18 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 18 ms 21480 KB Output is correct
5 Correct 17 ms 21504 KB Output is correct
6 Correct 22 ms 21504 KB Output is correct
7 Correct 20 ms 21504 KB Output is correct
8 Correct 18 ms 21504 KB Output is correct
9 Correct 17 ms 21504 KB Output is correct
10 Correct 17 ms 21504 KB Output is correct
11 Correct 18 ms 21504 KB Output is correct
12 Correct 17 ms 21504 KB Output is correct
13 Correct 17 ms 21504 KB Output is correct
14 Correct 18 ms 21504 KB Output is correct
15 Correct 17 ms 21504 KB Output is correct
16 Correct 17 ms 21504 KB Output is correct
17 Correct 18 ms 21504 KB Output is correct
18 Correct 18 ms 21456 KB Output is correct
19 Correct 17 ms 21504 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 21504 KB Output is correct
2 Correct 17 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 17 ms 21504 KB Output is correct
6 Correct 19 ms 21504 KB Output is correct
7 Correct 17 ms 21504 KB Output is correct
8 Correct 19 ms 21504 KB Output is correct
9 Correct 17 ms 21504 KB Output is correct
10 Correct 18 ms 21504 KB Output is correct
11 Correct 17 ms 21504 KB Output is correct
12 Correct 18 ms 21504 KB Output is correct
13 Correct 17 ms 21504 KB Output is correct
14 Correct 18 ms 21480 KB Output is correct
15 Correct 17 ms 21504 KB Output is correct
16 Correct 22 ms 21504 KB Output is correct
17 Correct 20 ms 21504 KB Output is correct
18 Correct 18 ms 21504 KB Output is correct
19 Correct 17 ms 21504 KB Output is correct
20 Correct 17 ms 21504 KB Output is correct
21 Correct 18 ms 21504 KB Output is correct
22 Correct 17 ms 21504 KB Output is correct
23 Correct 17 ms 21504 KB Output is correct
24 Correct 18 ms 21504 KB Output is correct
25 Correct 17 ms 21504 KB Output is correct
26 Correct 17 ms 21504 KB Output is correct
27 Correct 18 ms 21504 KB Output is correct
28 Correct 18 ms 21456 KB Output is correct
29 Correct 17 ms 21504 KB Output is correct
30 Correct 18 ms 21504 KB Output is correct
31 Correct 19 ms 21504 KB Output is correct
32 Correct 20 ms 21504 KB Output is correct
33 Correct 20 ms 21632 KB Output is correct
34 Correct 21 ms 21632 KB Output is correct
35 Correct 21 ms 21624 KB Output is correct
36 Correct 23 ms 21760 KB Output is correct
37 Correct 25 ms 21760 KB Output is correct
38 Correct 26 ms 21888 KB Output is correct
39 Correct 26 ms 21752 KB Output is correct
40 Correct 22 ms 22272 KB Output is correct
41 Correct 25 ms 22272 KB Output is correct
42 Correct 23 ms 21760 KB Output is correct
43 Correct 23 ms 22016 KB Output is correct
44 Correct 29 ms 22144 KB Output is correct
45 Correct 24 ms 22016 KB Output is correct
46 Correct 23 ms 22016 KB Output is correct
47 Correct 23 ms 21888 KB Output is correct
48 Correct 25 ms 21760 KB Output is correct
49 Correct 23 ms 21760 KB Output is correct
50 Correct 22 ms 21760 KB Output is correct
51 Correct 21 ms 21760 KB Output is correct
52 Correct 23 ms 21760 KB Output is correct
53 Correct 25 ms 21888 KB Output is correct
54 Correct 24 ms 21808 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 21504 KB Output is correct
2 Correct 17 ms 21504 KB Output is correct
3 Correct 17 ms 21504 KB Output is correct
4 Correct 17 ms 21504 KB Output is correct
5 Correct 17 ms 21504 KB Output is correct
6 Correct 19 ms 21504 KB Output is correct
7 Correct 17 ms 21504 KB Output is correct
8 Correct 19 ms 21504 KB Output is correct
9 Correct 17 ms 21504 KB Output is correct
10 Correct 18 ms 21504 KB Output is correct
11 Correct 17 ms 21504 KB Output is correct
12 Correct 18 ms 21504 KB Output is correct
13 Correct 17 ms 21504 KB Output is correct
14 Correct 18 ms 21480 KB Output is correct
15 Correct 17 ms 21504 KB Output is correct
16 Correct 22 ms 21504 KB Output is correct
17 Correct 20 ms 21504 KB Output is correct
18 Correct 18 ms 21504 KB Output is correct
19 Correct 17 ms 21504 KB Output is correct
20 Correct 17 ms 21504 KB Output is correct
21 Correct 18 ms 21504 KB Output is correct
22 Correct 17 ms 21504 KB Output is correct
23 Correct 17 ms 21504 KB Output is correct
24 Correct 18 ms 21504 KB Output is correct
25 Correct 17 ms 21504 KB Output is correct
26 Correct 17 ms 21504 KB Output is correct
27 Correct 18 ms 21504 KB Output is correct
28 Correct 18 ms 21456 KB Output is correct
29 Correct 17 ms 21504 KB Output is correct
30 Correct 18 ms 21504 KB Output is correct
31 Correct 19 ms 21504 KB Output is correct
32 Correct 20 ms 21504 KB Output is correct
33 Correct 20 ms 21632 KB Output is correct
34 Correct 21 ms 21632 KB Output is correct
35 Correct 21 ms 21624 KB Output is correct
36 Correct 23 ms 21760 KB Output is correct
37 Correct 25 ms 21760 KB Output is correct
38 Correct 26 ms 21888 KB Output is correct
39 Correct 26 ms 21752 KB Output is correct
40 Correct 22 ms 22272 KB Output is correct
41 Correct 25 ms 22272 KB Output is correct
42 Correct 23 ms 21760 KB Output is correct
43 Correct 23 ms 22016 KB Output is correct
44 Correct 29 ms 22144 KB Output is correct
45 Correct 24 ms 22016 KB Output is correct
46 Correct 23 ms 22016 KB Output is correct
47 Correct 23 ms 21888 KB Output is correct
48 Correct 25 ms 21760 KB Output is correct
49 Correct 23 ms 21760 KB Output is correct
50 Correct 22 ms 21760 KB Output is correct
51 Correct 21 ms 21760 KB Output is correct
52 Correct 23 ms 21760 KB Output is correct
53 Correct 25 ms 21888 KB Output is correct
54 Correct 24 ms 21808 KB Output is correct
55 Correct 37 ms 22392 KB Output is correct
56 Correct 86 ms 24704 KB Output is correct
57 Correct 150 ms 27132 KB Output is correct
58 Correct 191 ms 28656 KB Output is correct
59 Correct 249 ms 30960 KB Output is correct
60 Correct 317 ms 33392 KB Output is correct
61 Correct 360 ms 35512 KB Output is correct
62 Correct 393 ms 36720 KB Output is correct
63 Correct 490 ms 39532 KB Output is correct
64 Correct 539 ms 40376 KB Output is correct
65 Correct 392 ms 69752 KB Output is correct
66 Correct 398 ms 69752 KB Output is correct
67 Correct 395 ms 36984 KB Output is correct
68 Correct 440 ms 54796 KB Output is correct
69 Correct 474 ms 51876 KB Output is correct
70 Correct 463 ms 51948 KB Output is correct
71 Correct 446 ms 49508 KB Output is correct
72 Correct 454 ms 49892 KB Output is correct
73 Correct 395 ms 45920 KB Output is correct
74 Correct 413 ms 46024 KB Output is correct
75 Correct 433 ms 44900 KB Output is correct
76 Correct 395 ms 45008 KB Output is correct
77 Correct 423 ms 44904 KB Output is correct
78 Correct 412 ms 42596 KB Output is correct
79 Correct 370 ms 43744 KB Output is correct