oj.uz

Submission #935211

# Submission time Handle Problem Language Result Execution time Memory
935211 2024-02-28T20:08:39 Z velislavgarkov Worst Reporter 4 (JOI21_worst_reporter4) C++14
14 / 100
 2000 ms 82248 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
using namespace std;
const int MAXN=2e5+3;
#define endl '\n'
#define getchar getchar_unlocked
struct Node {
    long long mx, lazyadd, lazyset;
};
vector <int> v[MAXN];
set <int> vals;
vector <pair <int, long long> > dp[MAXN];
Node tree[4*MAXN];
long long c[MAXN];
int h[MAXN], cnt;
pair <int,int> kopie[MAXN];
int ss[MAXN];

void merge_lazy(int par, int ch) {
    if (tree[par].lazyset!=-1) {
        tree[ch].lazyset=tree[par].lazyset;
        tree[ch].lazyadd=0;
        return;
    }

    if (tree[ch].lazyset==-1) tree[ch].lazyadd+=tree[par].lazyadd;
    else tree[ch].lazyset+=tree[par].lazyadd;
}

void push_lazy(int node, int l, int r) {
    if (tree[node].lazyadd==0 && tree[node].lazyset==-1) return;

    if (tree[node].lazyadd==0) tree[node].mx=tree[node].lazyset;
    else tree[node].mx+=tree[node].lazyadd;

    if (l!=r) {
        merge_lazy(node,node*2);
        merge_lazy(node,node*2+1);
    }

    tree[node].lazyadd=0;
    tree[node].lazyset=-1;
}
void add_update(int node, int l, int r, int ql, int qr, long long ch) {
    push_lazy(node,l,r);
    if (ql>r || qr<l) return;

    if (l>=ql && r<=qr) {
        tree[node].lazyadd=ch;
        push_lazy(node,l,r);
        return;
    }

    int mid=(l+r)/2;
    add_update(node*2,l,mid,ql,qr,ch);
    add_update(node*2+1,mid+1,r,ql,qr,ch);

    tree[node].mx=max(tree[node*2].mx,tree[node*2+1].mx);
}
void set_update(int node, int l, int r, int ql, int qr, long long ch) {
    push_lazy(node,l,r);
    if (ql>r || qr<l) return;

    if (l>=ql && r<=qr) {
        tree[node].lazyset=ch;
        push_lazy(node,l,r);
        return;
    }

    int mid=(l+r)/2;
    set_update(node*2,l,mid,ql,qr,ch);
    set_update(node*2+1,mid+1,r,ql,qr,ch);

    tree[node].mx=max(tree[node*2].mx,tree[node*2+1].mx);
}
long long query(int node, int l, int r, int qind) {
    push_lazy(node,l,r);
    if (l==r) return tree[node].mx;

    int mid=(l+r)/2;
    if (qind<=mid) return query(node*2,l,mid,qind);
    return query(node*2+1,mid+1,r,qind);
}
int find_ind(int node, int l, int r, int ql, int qr, long long ch) {
    push_lazy(node,l,r);
    if (ql>r || qr<l || tree[node].mx<=ch) return -1;

    if (l==r) return l;
    int mid=(l+r)/2;
    int res=find_ind(node*2,l,mid,ql,qr,ch);
    if (res!=-1) return res;
    return find_ind(node*2+1,mid+1,r,ql,qr,ch);
}
void find_ss(int x) {
    ss[x]=1;
    for (int i=0;i<v[x].size();++i) {
        find_ss(v[x][i]);
        ss[x]+=ss[v[x][i]];
    }
    for (int i=1;i<v[x].size();++i) {
        if (ss[v[x][i]]>ss[v[x][0]]) swap(v[x][0],v[x][i]);
    }
}
void find_dp(int x) {
    if (v[x].empty()) {
        add_update(1,1,cnt,h[x]+1,cnt,c[x]);
        vals.insert(h[x]);
        vals.insert(cnt);
        return;
    }

    long long cur_res;
    int k;
    cur_res=0;
    for (int i=1;i<v[x].size();++i) {
        find_dp(v[x][i]);
        
        dp[v[x][i]].resize(vals.size());
        k=0;
        for (auto j:vals) {
            dp[v[x][i]][k]={j,query(1,1,cnt,j)};
            k++;
        }

        cur_res+=query(1,1,cnt,(*vals.lower_bound(h[x])));

        set_update(1,1,cnt,1,cnt,0);
        vals.clear();
    }
    find_dp(v[x][0]);
    cur_res+=query(1,1,cnt,(*vals.lower_bound(h[x])));

    for (int i=1;i<v[x].size();++i) {
        for (int j=0;j<dp[v[x][i]].size();j++) {
            int newv=dp[v[x][i]][j].first;
            set_update(1,1,cnt,newv,newv, query(1,1,cnt, (*vals.lower_bound(newv)) ) );
        }
    }

    for (int i=1;i<v[x].size();++i) {
        int ch=v[x][i];
        for (int j=0;j<dp[ch].size();j++) {
            if (j==0) add_update(1,1,cnt,1,dp[ch][j].first,dp[ch][j].second);
            else {
                add_update(1,1,cnt,dp[ch][j-1].first+1,dp[ch][j].first,dp[ch][j].second);
            }
            vals.insert(dp[ch][j].first);
        }
    }
    add_update(1,1,cnt,1,cnt,c[x]);

    int pos=find_ind(1,1,cnt,1,h[x],cur_res);
    if (pos!=-1) {
        set_update(1,1,cnt,pos,h[x],cur_res);
    }
    
    vals.insert(h[x]);
}
int read() {
    int res=0;
    char c=getchar();
    while (c<'0' || c>'9') c=getchar();
    while (c>='0' && c<='9') {
        res=res*10+c-'0';
        c=getchar();
    }
    return res;
}
int main () {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, par;
    n=read();
    for (int i=1;i<=n;++i) {
        par=read();
        h[i]=read();
        c[i]=read();
        if (i!=1) v[par].push_back(i);
        kopie[i].first=h[i];
        kopie[i].second=i;
    }
    sort(kopie+1,kopie+n+1);
    cnt=0;
    for (int i=1;i<=n;++i) {
        if (kopie[i].first!=kopie[i-1].second) cnt++;
        h[kopie[i].second]=cnt;
    }
    cnt++;
    find_ss(1);
    for (int j=1;j<=4*cnt;++j) {
        tree[j].lazyset=-1;
    }
    find_dp(1);
    cout << query(1,1,cnt,1) << endl;
    return 0;
}
/*
6
1 6 5
1 3 6
1 8 4
3 4 9
2 2 5
2 5 6
*/

Compilation message

worst_reporter2.cpp: In function 'void find_ss(int)':
worst_reporter2.cpp:98:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |     for (int i=0;i<v[x].size();++i) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:102:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |     for (int i=1;i<v[x].size();++i) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp: In function 'void find_dp(int)':
worst_reporter2.cpp:117:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  117 |     for (int i=1;i<v[x].size();++i) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:135:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  135 |     for (int i=1;i<v[x].size();++i) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:136:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         for (int j=0;j<dp[v[x][i]].size();j++) {
      |                      ~^~~~~~~~~~~~~~~~~~~
worst_reporter2.cpp:142:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |     for (int i=1;i<v[x].size();++i) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:144:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  144 |         for (int j=0;j<dp[ch].size();j++) {
      |                      ~^~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16732 KB Output is correct
4 Correct 5 ms 16708 KB Output is correct
5 Correct 27 ms 17500 KB Output is correct
6 Correct 24 ms 17232 KB Output is correct
7 Correct 24 ms 17232 KB Output is correct
8 Correct 24 ms 17496 KB Output is correct
9 Correct 25 ms 17500 KB Output is correct
10 Correct 24 ms 17488 KB Output is correct
11 Correct 24 ms 17496 KB Output is correct
12 Correct 11 ms 17980 KB Output is correct
13 Correct 10 ms 17776 KB Output is correct
14 Correct 12 ms 17496 KB Output is correct
15 Correct 12 ms 17548 KB Output is correct
16 Correct 32 ms 17520 KB Output is correct
17 Correct 31 ms 17492 KB Output is correct
18 Correct 24 ms 17492 KB Output is correct
19 Correct 12 ms 17500 KB Output is correct
20 Correct 13 ms 17480 KB Output is correct
21 Correct 12 ms 17500 KB Output is correct
22 Correct 14 ms 17244 KB Output is correct
23 Correct 15 ms 17372 KB Output is correct
24 Correct 11 ms 17752 KB Output is correct
25 Correct 12 ms 17500 KB Output is correct
26 Correct 8 ms 17776 KB Output is correct
27 Correct 13 ms 17500 KB Output is correct
28 Correct 12 ms 17624 KB Output is correct
29 Correct 11 ms 17752 KB Output is correct
30 Correct 10 ms 17500 KB Output is correct
31 Correct 10 ms 17500 KB Output is correct

Subtask #2
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16732 KB Output is correct
4 Correct 5 ms 16708 KB Output is correct
5 Correct 27 ms 17500 KB Output is correct
6 Correct 24 ms 17232 KB Output is correct
7 Correct 24 ms 17232 KB Output is correct
8 Correct 24 ms 17496 KB Output is correct
9 Correct 25 ms 17500 KB Output is correct
10 Correct 24 ms 17488 KB Output is correct
11 Correct 24 ms 17496 KB Output is correct
12 Correct 11 ms 17980 KB Output is correct
13 Correct 10 ms 17776 KB Output is correct
14 Correct 12 ms 17496 KB Output is correct
15 Correct 12 ms 17548 KB Output is correct
16 Correct 32 ms 17520 KB Output is correct
17 Correct 31 ms 17492 KB Output is correct
18 Correct 24 ms 17492 KB Output is correct
19 Correct 12 ms 17500 KB Output is correct
20 Correct 13 ms 17480 KB Output is correct
21 Correct 12 ms 17500 KB Output is correct
22 Correct 14 ms 17244 KB Output is correct
23 Correct 15 ms 17372 KB Output is correct
24 Correct 11 ms 17752 KB Output is correct
25 Correct 12 ms 17500 KB Output is correct
26 Correct 8 ms 17776 KB Output is correct
27 Correct 13 ms 17500 KB Output is correct
28 Correct 12 ms 17624 KB Output is correct
29 Correct 11 ms 17752 KB Output is correct
30 Correct 10 ms 17500 KB Output is correct
31 Correct 10 ms 17500 KB Output is correct
32 Correct 24 ms 17492 KB Output is correct
33 Correct 1617 ms 67940 KB Output is correct
34 Correct 1665 ms 67700 KB Output is correct
35 Correct 1621 ms 67036 KB Output is correct
36 Correct 1652 ms 67936 KB Output is correct
37 Correct 1588 ms 67528 KB Output is correct
38 Correct 1546 ms 66940 KB Output is correct
39 Correct 464 ms 82248 KB Output is correct
40 Correct 420 ms 82116 KB Output is correct
41 Correct 345 ms 82164 KB Output is correct
42 Correct 556 ms 69916 KB Output is correct
43 Correct 495 ms 69660 KB Output is correct
44 Execution timed out 2044 ms 68256 KB Time limit exceeded
45 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16732 KB Output is correct
4 Correct 5 ms 16708 KB Output is correct
5 Correct 27 ms 17500 KB Output is correct
6 Correct 24 ms 17232 KB Output is correct
7 Correct 24 ms 17232 KB Output is correct
8 Correct 24 ms 17496 KB Output is correct
9 Correct 25 ms 17500 KB Output is correct
10 Correct 24 ms 17488 KB Output is correct
11 Correct 24 ms 17496 KB Output is correct
12 Correct 11 ms 17980 KB Output is correct
13 Correct 10 ms 17776 KB Output is correct
14 Correct 12 ms 17496 KB Output is correct
15 Correct 12 ms 17548 KB Output is correct
16 Correct 32 ms 17520 KB Output is correct
17 Correct 31 ms 17492 KB Output is correct
18 Correct 24 ms 17492 KB Output is correct
19 Correct 12 ms 17500 KB Output is correct
20 Correct 13 ms 17480 KB Output is correct
21 Correct 12 ms 17500 KB Output is correct
22 Correct 14 ms 17244 KB Output is correct
23 Correct 15 ms 17372 KB Output is correct
24 Correct 11 ms 17752 KB Output is correct
25 Correct 12 ms 17500 KB Output is correct
26 Correct 8 ms 17776 KB Output is correct
27 Correct 13 ms 17500 KB Output is correct
28 Correct 12 ms 17624 KB Output is correct
29 Correct 11 ms 17752 KB Output is correct
30 Correct 10 ms 17500 KB Output is correct
31 Correct 10 ms 17500 KB Output is correct
32 Correct 24 ms 17492 KB Output is correct
33 Correct 1617 ms 67940 KB Output is correct
34 Correct 1665 ms 67700 KB Output is correct
35 Correct 1621 ms 67036 KB Output is correct
36 Correct 1652 ms 67936 KB Output is correct
37 Correct 1588 ms 67528 KB Output is correct
38 Correct 1546 ms 66940 KB Output is correct
39 Correct 464 ms 82248 KB Output is correct
40 Correct 420 ms 82116 KB Output is correct
41 Correct 345 ms 82164 KB Output is correct
42 Correct 556 ms 69916 KB Output is correct
43 Correct 495 ms 69660 KB Output is correct
44 Execution timed out 2044 ms 68256 KB Time limit exceeded
45 Halted 0 ms 0 KB -