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Submission #266977

# Submission time Handle Problem Language Result Execution time Memory
266977 2020-08-15T14:48:58 Z shayan_p Fireworks (APIO16_fireworks) C++14
100 / 100
 581 ms 98192 KB 
// And you curse yourself for things you never done

#include<bits/stdc++.h>

#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

const int maxn = 3e5 + 10, mod = 1e9 + 7;
const ll inf = 1e18 + 10;

vector<pii> v[maxn];
int n, m;

multiset<ll> peb[maxn];
int infs[maxn];

void dfs(int u, int S = 0){
    if(u >= n){
	peb[u].insert(S);
	peb[u].insert(S);
	return;
    }
    for(auto [y, x] : v[u]){
	dfs(y, x);
	infs[u]+= infs[y];
	if(sz(peb[u]) < sz(peb[y]))
	    swap(peb[u], peb[y]);
	for(ll x : peb[y])
	    peb[u].insert(x);
    }
    int N = sz(peb[u]) + infs[u];
    assert(sz(peb[u]) >= (N/2)+1);
    while(sz(peb[u]) > (N/2)+1)
	infs[u]++, peb[u].erase(--peb[u].end());
    ll R = *peb[u].rbegin();
    peb[u].erase(--peb[u].end());
    ll L = *peb[u].rbegin();
    peb[u].erase(--peb[u].end());
    peb[u].insert(L + S);
    peb[u].insert(R + S);
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie();

    ll sm = 0;
    
    cin >> n >> m;
    for(int i = 1; i < n+m; i++){
	int a, b;
	cin >> a >> b;
	v[--a].PB({i, b});
	sm+= b;
    }
    dfs(0);
    int N = sz(peb[0]) + infs[0];
    while(sz(peb[0]) > (N/2))
	infs[0]++, peb[0].erase(--peb[0].end());
    ll bst = *peb[0].rbegin();
    ll df = 0;
    for(ll x : peb[0]){
	df+= abs(x - bst);
	df-= x;
    }
    df+= -bst * infs[0];
    ll ans = df + sm *2;
    return cout << ans/2 << endl, 0;
}

Compilation message

fireworks.cpp: In function 'void dfs(int, int)':
fireworks.cpp:31:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   31 |     for(auto [y, x] : v[u]){
      |              ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21632 KB Output is correct
6 Correct 16 ms 21504 KB Output is correct
7 Correct 16 ms 21504 KB Output is correct
8 Correct 14 ms 21484 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 14 ms 21504 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 21504 KB Output is correct
2 Correct 13 ms 21504 KB Output is correct
3 Correct 13 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 13 ms 21504 KB Output is correct
6 Correct 14 ms 21504 KB Output is correct
7 Correct 14 ms 21504 KB Output is correct
8 Correct 13 ms 21504 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 14 ms 21504 KB Output is correct
11 Correct 14 ms 21504 KB Output is correct
12 Correct 14 ms 21504 KB Output is correct
13 Correct 14 ms 21504 KB Output is correct
14 Correct 14 ms 21504 KB Output is correct
15 Correct 14 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 14 ms 21504 KB Output is correct
19 Correct 14 ms 21632 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21632 KB Output is correct
6 Correct 16 ms 21504 KB Output is correct
7 Correct 16 ms 21504 KB Output is correct
8 Correct 14 ms 21484 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 14 ms 21504 KB Output is correct
11 Correct 13 ms 21504 KB Output is correct
12 Correct 13 ms 21504 KB Output is correct
13 Correct 13 ms 21504 KB Output is correct
14 Correct 14 ms 21504 KB Output is correct
15 Correct 13 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 13 ms 21504 KB Output is correct
19 Correct 14 ms 21504 KB Output is correct
20 Correct 14 ms 21504 KB Output is correct
21 Correct 14 ms 21504 KB Output is correct
22 Correct 14 ms 21504 KB Output is correct
23 Correct 14 ms 21504 KB Output is correct
24 Correct 14 ms 21504 KB Output is correct
25 Correct 14 ms 21504 KB Output is correct
26 Correct 14 ms 21504 KB Output is correct
27 Correct 14 ms 21504 KB Output is correct
28 Correct 14 ms 21504 KB Output is correct
29 Correct 14 ms 21632 KB Output is correct
30 Correct 14 ms 21504 KB Output is correct
31 Correct 16 ms 21632 KB Output is correct
32 Correct 16 ms 21632 KB Output is correct
33 Correct 15 ms 21760 KB Output is correct
34 Correct 16 ms 21760 KB Output is correct
35 Correct 16 ms 21888 KB Output is correct
36 Correct 16 ms 21888 KB Output is correct
37 Correct 17 ms 22016 KB Output is correct
38 Correct 20 ms 22016 KB Output is correct
39 Correct 17 ms 22016 KB Output is correct
40 Correct 16 ms 22144 KB Output is correct
41 Correct 16 ms 22144 KB Output is correct
42 Correct 16 ms 21632 KB Output is correct
43 Correct 18 ms 22144 KB Output is correct
44 Correct 17 ms 22144 KB Output is correct
45 Correct 17 ms 22144 KB Output is correct
46 Correct 20 ms 22400 KB Output is correct
47 Correct 18 ms 22400 KB Output is correct
48 Correct 18 ms 22272 KB Output is correct
49 Correct 18 ms 22400 KB Output is correct
50 Correct 17 ms 22272 KB Output is correct
51 Correct 17 ms 22144 KB Output is correct
52 Correct 17 ms 22272 KB Output is correct
53 Correct 18 ms 22272 KB Output is correct
54 Correct 18 ms 22400 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21504 KB Output is correct
2 Correct 14 ms 21504 KB Output is correct
3 Correct 14 ms 21504 KB Output is correct
4 Correct 14 ms 21504 KB Output is correct
5 Correct 14 ms 21632 KB Output is correct
6 Correct 16 ms 21504 KB Output is correct
7 Correct 16 ms 21504 KB Output is correct
8 Correct 14 ms 21484 KB Output is correct
9 Correct 14 ms 21504 KB Output is correct
10 Correct 14 ms 21504 KB Output is correct
11 Correct 13 ms 21504 KB Output is correct
12 Correct 13 ms 21504 KB Output is correct
13 Correct 13 ms 21504 KB Output is correct
14 Correct 14 ms 21504 KB Output is correct
15 Correct 13 ms 21504 KB Output is correct
16 Correct 14 ms 21504 KB Output is correct
17 Correct 14 ms 21504 KB Output is correct
18 Correct 13 ms 21504 KB Output is correct
19 Correct 14 ms 21504 KB Output is correct
20 Correct 14 ms 21504 KB Output is correct
21 Correct 14 ms 21504 KB Output is correct
22 Correct 14 ms 21504 KB Output is correct
23 Correct 14 ms 21504 KB Output is correct
24 Correct 14 ms 21504 KB Output is correct
25 Correct 14 ms 21504 KB Output is correct
26 Correct 14 ms 21504 KB Output is correct
27 Correct 14 ms 21504 KB Output is correct
28 Correct 14 ms 21504 KB Output is correct
29 Correct 14 ms 21632 KB Output is correct
30 Correct 14 ms 21504 KB Output is correct
31 Correct 16 ms 21632 KB Output is correct
32 Correct 16 ms 21632 KB Output is correct
33 Correct 15 ms 21760 KB Output is correct
34 Correct 16 ms 21760 KB Output is correct
35 Correct 16 ms 21888 KB Output is correct
36 Correct 16 ms 21888 KB Output is correct
37 Correct 17 ms 22016 KB Output is correct
38 Correct 20 ms 22016 KB Output is correct
39 Correct 17 ms 22016 KB Output is correct
40 Correct 16 ms 22144 KB Output is correct
41 Correct 16 ms 22144 KB Output is correct
42 Correct 16 ms 21632 KB Output is correct
43 Correct 18 ms 22144 KB Output is correct
44 Correct 17 ms 22144 KB Output is correct
45 Correct 17 ms 22144 KB Output is correct
46 Correct 20 ms 22400 KB Output is correct
47 Correct 18 ms 22400 KB Output is correct
48 Correct 18 ms 22272 KB Output is correct
49 Correct 18 ms 22400 KB Output is correct
50 Correct 17 ms 22272 KB Output is correct
51 Correct 17 ms 22144 KB Output is correct
52 Correct 17 ms 22272 KB Output is correct
53 Correct 18 ms 22272 KB Output is correct
54 Correct 18 ms 22400 KB Output is correct
55 Correct 24 ms 22912 KB Output is correct
56 Correct 59 ms 27384 KB Output is correct
57 Correct 96 ms 31864 KB Output is correct
58 Correct 138 ms 35064 KB Output is correct
59 Correct 183 ms 39416 KB Output is correct
60 Correct 226 ms 44024 KB Output is correct
61 Correct 270 ms 47096 KB Output is correct
62 Correct 281 ms 50296 KB Output is correct
63 Correct 339 ms 56696 KB Output is correct
64 Correct 348 ms 56952 KB Output is correct
65 Correct 175 ms 69752 KB Output is correct
66 Correct 179 ms 69752 KB Output is correct
67 Correct 173 ms 37240 KB Output is correct
68 Correct 282 ms 69112 KB Output is correct
69 Correct 343 ms 67448 KB Output is correct
70 Correct 337 ms 67540 KB Output is correct
71 Correct 486 ms 98192 KB Output is correct
72 Correct 526 ms 97784 KB Output is correct
73 Correct 581 ms 84732 KB Output is correct
74 Correct 536 ms 84856 KB Output is correct
75 Correct 516 ms 84020 KB Output is correct
76 Correct 500 ms 84216 KB Output is correct
77 Correct 497 ms 82296 KB Output is correct
78 Correct 508 ms 79348 KB Output is correct
79 Correct 504 ms 83672 KB Output is correct