oj.uz

Submission #266953

# Submission time Handle Problem Language Result Execution time Memory
266953 2020-08-15T14:31:14 Z shayan_p Fireworks (APIO16_fireworks) C++14
55 / 100
 403 ms 16884 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 = 1e5 + 10, mod = 1e9 + 7;
const ll inf = 1e18 + 10;

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

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

void dfs(int u, int S = 0){
    if(u >= n){
	peb[u].PB(S);
	peb[u].PB(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].PB(x);
    }
    sort(peb[u].begin(), peb[u].end());
    int N = sz(peb[u]) + infs[u];
    assert(sz(peb[u]) >= (N/2)+1);
    ll L = peb[u][(N/2)-1], R = peb[u][(N/2)];
    infs[u]+= sz(peb[u]) - (N/2) - 1;
    peb[u].resize((N/2) + 1);
    peb[u].pop_back(), peb[u].pop_back();
    peb[u].PB(L + S);
    peb[u].PB(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);
    sort(peb[0].begin(), peb[0].end());
    int N = sz(peb[0]) + infs[0];
    ll bst = peb[0][(N/2)-1];
    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 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 5 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4992 KB Output is correct
4 Correct 3 ms 4992 KB Output is correct
5 Correct 5 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 3 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 5 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 5 ms 4992 KB Output is correct
12 Correct 5 ms 5120 KB Output is correct
13 Correct 5 ms 4992 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 5 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 5 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 5 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 5 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 3 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 5 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 4992 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 5 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 5 ms 4992 KB Output is correct
28 Correct 4 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 5 ms 4992 KB Output is correct
31 Correct 6 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 6 ms 5120 KB Output is correct
34 Correct 8 ms 5180 KB Output is correct
35 Correct 7 ms 5248 KB Output is correct
36 Correct 7 ms 5248 KB Output is correct
37 Correct 9 ms 5376 KB Output is correct
38 Correct 11 ms 5352 KB Output is correct
39 Correct 10 ms 5376 KB Output is correct
40 Correct 7 ms 6016 KB Output is correct
41 Correct 6 ms 6016 KB Output is correct
42 Correct 6 ms 5248 KB Output is correct
43 Correct 85 ms 5632 KB Output is correct
44 Correct 67 ms 5600 KB Output is correct
45 Correct 66 ms 5700 KB Output is correct
46 Correct 7 ms 5504 KB Output is correct
47 Correct 7 ms 5504 KB Output is correct
48 Correct 9 ms 5376 KB Output is correct
49 Correct 10 ms 5376 KB Output is correct
50 Correct 9 ms 5376 KB Output is correct
51 Correct 7 ms 5364 KB Output is correct
52 Correct 7 ms 5376 KB Output is correct
53 Correct 8 ms 5376 KB Output is correct
54 Correct 6 ms 5376 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 5 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 5 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 3 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 5 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 4992 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 5 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 5 ms 4992 KB Output is correct
28 Correct 4 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 5 ms 4992 KB Output is correct
31 Correct 6 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 6 ms 5120 KB Output is correct
34 Correct 8 ms 5180 KB Output is correct
35 Correct 7 ms 5248 KB Output is correct
36 Correct 7 ms 5248 KB Output is correct
37 Correct 9 ms 5376 KB Output is correct
38 Correct 11 ms 5352 KB Output is correct
39 Correct 10 ms 5376 KB Output is correct
40 Correct 7 ms 6016 KB Output is correct
41 Correct 6 ms 6016 KB Output is correct
42 Correct 6 ms 5248 KB Output is correct
43 Correct 85 ms 5632 KB Output is correct
44 Correct 67 ms 5600 KB Output is correct
45 Correct 66 ms 5700 KB Output is correct
46 Correct 7 ms 5504 KB Output is correct
47 Correct 7 ms 5504 KB Output is correct
48 Correct 9 ms 5376 KB Output is correct
49 Correct 10 ms 5376 KB Output is correct
50 Correct 9 ms 5376 KB Output is correct
51 Correct 7 ms 5364 KB Output is correct
52 Correct 7 ms 5376 KB Output is correct
53 Correct 8 ms 5376 KB Output is correct
54 Correct 6 ms 5376 KB Output is correct
55 Correct 25 ms 5880 KB Output is correct
56 Correct 184 ms 8272 KB Output is correct
57 Correct 403 ms 10616 KB Output is correct
58 Runtime error 48 ms 16884 KB Execution killed with signal 11
59 Halted 0 ms 0 KB -