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Submission #730015

# Submission time Handle Problem Language Result Execution time Memory
730015 2023-04-25T05:14:31 Z InternetPerson10 Fireworks (APIO16_fireworks) C++17
55 / 100
 1562 ms 524288 KB 
#include <bits/stdc++.h>
typedef long long ll;

using namespace std;

vector<int> top;
vector<vector<int>> ch;
vector<multiset<ll>*> s;

// Slope trick, remove the chs until you get something with slope >= -1.

// new 0,    new 1
// x(i-1)+6, x(i)+6

void dfs(int x) {
    if(ch[x].size() == 0) {
        s[x] = new multiset<ll>();
        s[x]->insert(top[x]);
        s[x]->insert(top[x]);
        return;
    }
    for(int i = 0; i < ch[x].size(); i++) {
        dfs(ch[x][i]);
    }
    sort(ch[x].begin(), ch[x].end(), [](int y1, int y2){
        return s[y1]->size() < s[y2]->size();
    });
    s[x] = s[ch[x][0]];
    for(int i = 1; i < ch[x].size(); i++) {
        for(ll g : *(s[ch[x][i]])) {
            s[x]->insert(g);
        }
    }
    ll y, z;
    int k = ch[x].size() + 1;
    while(k--) {
        auto it = --(s[x]->end());
        y = z;
        z = *it;
        s[x]->erase(it);
    }
    s[x]->insert(y+top[x]);
    s[x]->insert(z+top[x]);
}


int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    n += m;
    top.resize(n, 0);
    ch.resize(n, vector<int>());
    s.resize(n, nullptr);
    ll sum = 0;
    for(int i = 1; i < n; i++) {
        int x;
        cin >> x >> top[i];
        x--;
        sum += top[i];
        ch[x].push_back(i);
    }
    dfs(0);
    ll pr = 0, sl = s[0]->size() - 1;
    for(ll g : *s[0]) {
        sum -= sl * (g - pr);
        pr = g;
        sl--;
    }
    cout << sum << '\n';
}

Compilation message

fireworks.cpp: In function 'void dfs(int)':
fireworks.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i = 0; i < ch[x].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~
fireworks.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int i = 1; i < ch[x].size(); i++) {
      |                    ~~^~~~~~~~~~~~~~
fireworks.cpp:43:19: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |     s[x]->insert(z+top[x]);
fireworks.cpp:42:19: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 |     s[x]->insert(y+top[x]);

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 2 ms 980 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 4 ms 1520 KB Output is correct
34 Correct 6 ms 2112 KB Output is correct
35 Correct 10 ms 3924 KB Output is correct
36 Correct 10 ms 3788 KB Output is correct
37 Correct 8 ms 3380 KB Output is correct
38 Correct 21 ms 7892 KB Output is correct
39 Correct 10 ms 4144 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 3 ms 1228 KB Output is correct
42 Correct 3 ms 724 KB Output is correct
43 Correct 336 ms 147960 KB Output is correct
44 Correct 251 ms 109804 KB Output is correct
45 Correct 259 ms 107996 KB Output is correct
46 Correct 4 ms 1868 KB Output is correct
47 Correct 5 ms 1876 KB Output is correct
48 Correct 4 ms 1620 KB Output is correct
49 Correct 4 ms 1748 KB Output is correct
50 Correct 3 ms 1612 KB Output is correct
51 Correct 3 ms 1492 KB Output is correct
52 Correct 9 ms 3556 KB Output is correct
53 Correct 4 ms 1996 KB Output is correct
54 Correct 3 ms 1712 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 2 ms 980 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 4 ms 1520 KB Output is correct
34 Correct 6 ms 2112 KB Output is correct
35 Correct 10 ms 3924 KB Output is correct
36 Correct 10 ms 3788 KB Output is correct
37 Correct 8 ms 3380 KB Output is correct
38 Correct 21 ms 7892 KB Output is correct
39 Correct 10 ms 4144 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 3 ms 1228 KB Output is correct
42 Correct 3 ms 724 KB Output is correct
43 Correct 336 ms 147960 KB Output is correct
44 Correct 251 ms 109804 KB Output is correct
45 Correct 259 ms 107996 KB Output is correct
46 Correct 4 ms 1868 KB Output is correct
47 Correct 5 ms 1876 KB Output is correct
48 Correct 4 ms 1620 KB Output is correct
49 Correct 4 ms 1748 KB Output is correct
50 Correct 3 ms 1612 KB Output is correct
51 Correct 3 ms 1492 KB Output is correct
52 Correct 9 ms 3556 KB Output is correct
53 Correct 4 ms 1996 KB Output is correct
54 Correct 3 ms 1712 KB Output is correct
55 Correct 51 ms 19008 KB Output is correct
56 Correct 485 ms 172540 KB Output is correct
57 Correct 1052 ms 357872 KB Output is correct
58 Correct 1210 ms 399480 KB Output is correct
59 Runtime error 1562 ms 524288 KB Execution killed with signal 9
60 Halted 0 ms 0 KB -