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Submission #265505

# Submission time Handle Problem Language Result Execution time Memory
265505 2020-08-14T22:50:59 Z ajpiano Fireworks (APIO16_fireworks) C++14
100 / 100
 286 ms 82772 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("sse4")

using namespace std;

#define FOR(a,b) for(int a=0;a<b;a++)
#define F0R(a,b,c) for(int a = b; a<=c; a++)
#define f first
#define s second
#define m0(x) memset(x,0,sizeof(x))
#define all(x) x.begin(), x.end()

typedef pair<int,int> pi;
typedef long long ll;
typedef vector<int> vi;
typedef vector<pi> vpi;

struct hull{
    priority_queue<ll> lhull;
    priority_queue<ll,vector<ll>,greater<ll>> rhull;
    ll height = 0;
    void putpar(ll len){
        if(lhull.empty()){
            lhull.push(len);
            rhull.push(len);
            return;
        }
        ll a = lhull.top(); lhull.pop(); a += len;
        lhull.push(a);
        a = rhull.top();
        while(!rhull.empty()) rhull.pop();
        rhull.push(a+len);
    }
    void plu(ll num){
        lhull.push(num);
        ll a = lhull.top(); lhull.pop();
        height += a-num;
        rhull.push(a);
    }
    void pld(ll num){
        rhull.push(num);
        ll a = rhull.top(); rhull.pop();
        height += num - a;
        lhull.push(a);
    }
    void ins(ll num){
        plu(num);
        pld(num);
    }
    void combine(hull & other){
        while(!other.lhull.empty()){
            ll a = other.lhull.top();
            other.lhull.pop();
            pld(a);
        }
        while(!other.rhull.empty()){
            ll a = other.rhull.top();
            other.rhull.pop();
            plu(a);
        }
        height += other.height;
    }
};

vector<ll> children, root;

const int large = 3e5+1;

vi edges[large];

int dfs1(int child){
    int ccnt = 1;
    for(auto &a: edges[child]) ccnt += dfs1(a);
    children[child] = ccnt;
    return ccnt;
}

void dfs2(int child, hull &ans){
    const int sz = edges[child].size();
    vi &e = edges[child];
    FOR(i,sz){
        if(children[e[i]] > children[e[0]])
            swap(e[i], e[0]);
    }
    if(sz != 0){
        dfs2(e[0],ans);
    }
    F0R(i,1,sz-1){
        hull cur;
        dfs2(e[i],cur);
        ans.combine(cur);
    }
    ans.putpar(root[child]);
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n,m; cin >> n >> m;
    hull ans;
    children.resize(n+m+1);
    root.resize(n+m+1);
    F0R(i,2,n+m){
        int par;
        cin >> par >> root[i];
        edges[par].push_back(i);
    }
    dfs1(1);
    dfs2(1,ans);
    cout << ans.height << "\n";
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 5 ms 7424 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 5 ms 7424 KB Output is correct
11 Correct 5 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 5 ms 7424 KB Output is correct
17 Correct 5 ms 7424 KB Output is correct
18 Correct 5 ms 7424 KB Output is correct
19 Correct 5 ms 7424 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 5 ms 7424 KB Output is correct
11 Correct 5 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 5 ms 7424 KB Output is correct
17 Correct 5 ms 7424 KB Output is correct
18 Correct 5 ms 7424 KB Output is correct
19 Correct 5 ms 7424 KB Output is correct
20 Correct 5 ms 7424 KB Output is correct
21 Correct 5 ms 7424 KB Output is correct
22 Correct 5 ms 7424 KB Output is correct
23 Correct 5 ms 7424 KB Output is correct
24 Correct 5 ms 7424 KB Output is correct
25 Correct 5 ms 7424 KB Output is correct
26 Correct 5 ms 7424 KB Output is correct
27 Correct 5 ms 7424 KB Output is correct
28 Correct 5 ms 7424 KB Output is correct
29 Correct 5 ms 7424 KB Output is correct
30 Correct 5 ms 7456 KB Output is correct
31 Correct 5 ms 7424 KB Output is correct
32 Correct 6 ms 7552 KB Output is correct
33 Correct 6 ms 7552 KB Output is correct
34 Correct 6 ms 7552 KB Output is correct
35 Correct 7 ms 7552 KB Output is correct
36 Correct 7 ms 7680 KB Output is correct
37 Correct 7 ms 7680 KB Output is correct
38 Correct 8 ms 7680 KB Output is correct
39 Correct 7 ms 7680 KB Output is correct
40 Correct 11 ms 8576 KB Output is correct
41 Correct 8 ms 8576 KB Output is correct
42 Correct 7 ms 7680 KB Output is correct
43 Correct 9 ms 8192 KB Output is correct
44 Correct 8 ms 7936 KB Output is correct
45 Correct 9 ms 7968 KB Output is correct
46 Correct 9 ms 7680 KB Output is correct
47 Correct 9 ms 7680 KB Output is correct
48 Correct 9 ms 7680 KB Output is correct
49 Correct 9 ms 7680 KB Output is correct
50 Correct 7 ms 7680 KB Output is correct
51 Correct 7 ms 7712 KB Output is correct
52 Correct 8 ms 7680 KB Output is correct
53 Correct 8 ms 7680 KB Output is correct
54 Correct 8 ms 7680 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 6 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 5 ms 7424 KB Output is correct
11 Correct 5 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 5 ms 7424 KB Output is correct
17 Correct 5 ms 7424 KB Output is correct
18 Correct 5 ms 7424 KB Output is correct
19 Correct 5 ms 7424 KB Output is correct
20 Correct 5 ms 7424 KB Output is correct
21 Correct 5 ms 7424 KB Output is correct
22 Correct 5 ms 7424 KB Output is correct
23 Correct 5 ms 7424 KB Output is correct
24 Correct 5 ms 7424 KB Output is correct
25 Correct 5 ms 7424 KB Output is correct
26 Correct 5 ms 7424 KB Output is correct
27 Correct 5 ms 7424 KB Output is correct
28 Correct 5 ms 7424 KB Output is correct
29 Correct 5 ms 7424 KB Output is correct
30 Correct 5 ms 7456 KB Output is correct
31 Correct 5 ms 7424 KB Output is correct
32 Correct 6 ms 7552 KB Output is correct
33 Correct 6 ms 7552 KB Output is correct
34 Correct 6 ms 7552 KB Output is correct
35 Correct 7 ms 7552 KB Output is correct
36 Correct 7 ms 7680 KB Output is correct
37 Correct 7 ms 7680 KB Output is correct
38 Correct 8 ms 7680 KB Output is correct
39 Correct 7 ms 7680 KB Output is correct
40 Correct 11 ms 8576 KB Output is correct
41 Correct 8 ms 8576 KB Output is correct
42 Correct 7 ms 7680 KB Output is correct
43 Correct 9 ms 8192 KB Output is correct
44 Correct 8 ms 7936 KB Output is correct
45 Correct 9 ms 7968 KB Output is correct
46 Correct 9 ms 7680 KB Output is correct
47 Correct 9 ms 7680 KB Output is correct
48 Correct 9 ms 7680 KB Output is correct
49 Correct 9 ms 7680 KB Output is correct
50 Correct 7 ms 7680 KB Output is correct
51 Correct 7 ms 7712 KB Output is correct
52 Correct 8 ms 7680 KB Output is correct
53 Correct 8 ms 7680 KB Output is correct
54 Correct 8 ms 7680 KB Output is correct
55 Correct 12 ms 8192 KB Output is correct
56 Correct 43 ms 10480 KB Output is correct
57 Correct 61 ms 12280 KB Output is correct
58 Correct 89 ms 13860 KB Output is correct
59 Correct 115 ms 15696 KB Output is correct
60 Correct 162 ms 17440 KB Output is correct
61 Correct 182 ms 19412 KB Output is correct
62 Correct 211 ms 20456 KB Output is correct
63 Correct 277 ms 22780 KB Output is correct
64 Correct 286 ms 23232 KB Output is correct
65 Correct 134 ms 82772 KB Output is correct
66 Correct 137 ms 82680 KB Output is correct
67 Correct 140 ms 26488 KB Output is correct
68 Correct 187 ms 51948 KB Output is correct
69 Correct 215 ms 47232 KB Output is correct
70 Correct 217 ms 47088 KB Output is correct
71 Correct 237 ms 22632 KB Output is correct
72 Correct 233 ms 22620 KB Output is correct
73 Correct 218 ms 21992 KB Output is correct
74 Correct 213 ms 21992 KB Output is correct
75 Correct 218 ms 21864 KB Output is correct
76 Correct 216 ms 21932 KB Output is correct
77 Correct 235 ms 22656 KB Output is correct
78 Correct 233 ms 22964 KB Output is correct
79 Correct 215 ms 24940 KB Output is correct