oj.uz

답안 #935174

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
935174 2024-02-28T18:51:27 Z velislavgarkov Worst Reporter 4 (JOI21_worst_reporter4) C++14
14 / 100
 2000 ms 139220 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_map>
using namespace std;
const int MAXN=2e5+10;
struct Node {
    long long mx, lazyadd, lazyset;
};
vector <int> v[MAXN];
set <int> vals[MAXN];
vector <long long> dp[MAXN];
Node tree[4*MAXN];
long long c[MAXN];
int h[MAXN], kopie[MAXN], cnt;
int ss[MAXN];
unordered_map <int,int> um;

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[x].insert(h[x]);
        vals[x].insert(cnt);
        return;
    }

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

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

        set_update(1,1,cnt,1,cnt,0);
    }

    find_dp(v[x][0]);
    vals[x]=move(vals[v[x][0]]);
    auto it=vals[x].lower_bound(h[x]);
    cur_res+=query(1,1,cnt,(*it));

    for (int i=1;i<v[x].size();i++) {
        for (auto j:vals[v[x][i]]) {
            auto it=vals[x].lower_bound(j);
            set_update(1,1,cnt,j,j, query(1,1,cnt,(*it)) );
        }
    }

    for (int i=1;i<v[x].size();i++) {
        int k=0;
        for (auto it=vals[v[x][i]].begin();it!=vals[v[x][i]].end();it++,k++) {
            if (k==0) add_update(1,1,cnt,1,(*it),dp[v[x][i]][k]);
            else {
                auto pr=prev(it);
                add_update(1,1,cnt,(*pr)+1,(*it),dp[v[x][i]][k]);
            }
            vals[x].insert((*it));
        }
    }
    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[x].insert(h[x]);
}
int main () {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, par;
    cin >> n;
    for (int i=1;i<=n;i++) {
        cin >> par >> h[i] >> c[i];
        if (i!=1) v[par].push_back(i);
        kopie[i]=h[i];
    }
    sort(kopie+1,kopie+n+1);
    cnt=1;
    for (int i=1;i<=n;i++) {
        if (um[kopie[i]]==0) {
            um[kopie[i]]=cnt;
            cnt++;
        }
    }
    for (int i=1;i<=n;i++) h[i]=um[h[i]];
    find_ss(1);
    for (int j=1;j<=4*cnt;j++) {
        tree[j].lazyset=-1;
        tree[j].mx=tree[j].lazyadd=0;
    }
    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:97:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |     for (int i=0;i<v[x].size();i++) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:101:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |     for (int i=1;i<v[x].size();i++) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp: In function 'void find_dp(int)':
worst_reporter2.cpp:115:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |     for (int i=1;i<v[x].size();i++) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:136:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |     for (int i=1;i<v[x].size();i++) {
      |                  ~^~~~~~~~~~~~
worst_reporter2.cpp:143:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  143 |     for (int i=1;i<v[x].size();i++) {
      |                  ~^~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 25176 KB Output is correct
2 Correct 6 ms 25176 KB Output is correct
3 Correct 5 ms 25360 KB Output is correct
4 Correct 6 ms 25180 KB Output is correct
5 Correct 27 ms 28676 KB Output is correct
6 Correct 16 ms 25948 KB Output is correct
7 Correct 11 ms 25944 KB Output is correct
8 Correct 29 ms 28796 KB Output is correct
9 Correct 17 ms 26084 KB Output is correct
10 Correct 11 ms 25948 KB Output is correct
11 Correct 11 ms 25692 KB Output is correct
12 Correct 14 ms 28764 KB Output is correct
13 Correct 8 ms 26204 KB Output is correct
14 Correct 15 ms 28504 KB Output is correct
15 Correct 9 ms 25948 KB Output is correct
16 Correct 37 ms 29336 KB Output is correct
17 Correct 19 ms 26204 KB Output is correct
18 Correct 8 ms 25692 KB Output is correct
19 Correct 17 ms 28504 KB Output is correct
20 Correct 11 ms 25948 KB Output is correct
21 Correct 9 ms 25948 KB Output is correct
22 Correct 17 ms 28380 KB Output is correct
23 Correct 11 ms 25948 KB Output is correct
24 Correct 15 ms 28568 KB Output is correct
25 Correct 10 ms 26200 KB Output is correct
26 Correct 11 ms 28612 KB Output is correct
27 Correct 18 ms 28520 KB Output is correct
28 Correct 16 ms 28628 KB Output is correct
29 Correct 15 ms 28508 KB Output is correct
30 Correct 13 ms 28508 KB Output is correct
31 Correct 13 ms 28508 KB Output is correct

Subtask #2
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 25176 KB Output is correct
2 Correct 6 ms 25176 KB Output is correct
3 Correct 5 ms 25360 KB Output is correct
4 Correct 6 ms 25180 KB Output is correct
5 Correct 27 ms 28676 KB Output is correct
6 Correct 16 ms 25948 KB Output is correct
7 Correct 11 ms 25944 KB Output is correct
8 Correct 29 ms 28796 KB Output is correct
9 Correct 17 ms 26084 KB Output is correct
10 Correct 11 ms 25948 KB Output is correct
11 Correct 11 ms 25692 KB Output is correct
12 Correct 14 ms 28764 KB Output is correct
13 Correct 8 ms 26204 KB Output is correct
14 Correct 15 ms 28504 KB Output is correct
15 Correct 9 ms 25948 KB Output is correct
16 Correct 37 ms 29336 KB Output is correct
17 Correct 19 ms 26204 KB Output is correct
18 Correct 8 ms 25692 KB Output is correct
19 Correct 17 ms 28504 KB Output is correct
20 Correct 11 ms 25948 KB Output is correct
21 Correct 9 ms 25948 KB Output is correct
22 Correct 17 ms 28380 KB Output is correct
23 Correct 11 ms 25948 KB Output is correct
24 Correct 15 ms 28568 KB Output is correct
25 Correct 10 ms 26200 KB Output is correct
26 Correct 11 ms 28612 KB Output is correct
27 Correct 18 ms 28520 KB Output is correct
28 Correct 16 ms 28628 KB Output is correct
29 Correct 15 ms 28508 KB Output is correct
30 Correct 13 ms 28508 KB Output is correct
31 Correct 13 ms 28508 KB Output is correct
32 Correct 28 ms 28764 KB Output is correct
33 Correct 1795 ms 118632 KB Output is correct
34 Correct 785 ms 66092 KB Output is correct
35 Correct 1735 ms 115412 KB Output is correct
36 Correct 809 ms 66336 KB Output is correct
37 Correct 243 ms 45596 KB Output is correct
38 Correct 170 ms 41092 KB Output is correct
39 Correct 559 ms 97712 KB Output is correct
40 Correct 224 ms 63128 KB Output is correct
41 Correct 117 ms 62920 KB Output is correct
42 Correct 614 ms 87656 KB Output is correct
43 Correct 221 ms 47352 KB Output is correct
44 Execution timed out 2056 ms 139220 KB Time limit exceeded
45 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 25176 KB Output is correct
2 Correct 6 ms 25176 KB Output is correct
3 Correct 5 ms 25360 KB Output is correct
4 Correct 6 ms 25180 KB Output is correct
5 Correct 27 ms 28676 KB Output is correct
6 Correct 16 ms 25948 KB Output is correct
7 Correct 11 ms 25944 KB Output is correct
8 Correct 29 ms 28796 KB Output is correct
9 Correct 17 ms 26084 KB Output is correct
10 Correct 11 ms 25948 KB Output is correct
11 Correct 11 ms 25692 KB Output is correct
12 Correct 14 ms 28764 KB Output is correct
13 Correct 8 ms 26204 KB Output is correct
14 Correct 15 ms 28504 KB Output is correct
15 Correct 9 ms 25948 KB Output is correct
16 Correct 37 ms 29336 KB Output is correct
17 Correct 19 ms 26204 KB Output is correct
18 Correct 8 ms 25692 KB Output is correct
19 Correct 17 ms 28504 KB Output is correct
20 Correct 11 ms 25948 KB Output is correct
21 Correct 9 ms 25948 KB Output is correct
22 Correct 17 ms 28380 KB Output is correct
23 Correct 11 ms 25948 KB Output is correct
24 Correct 15 ms 28568 KB Output is correct
25 Correct 10 ms 26200 KB Output is correct
26 Correct 11 ms 28612 KB Output is correct
27 Correct 18 ms 28520 KB Output is correct
28 Correct 16 ms 28628 KB Output is correct
29 Correct 15 ms 28508 KB Output is correct
30 Correct 13 ms 28508 KB Output is correct
31 Correct 13 ms 28508 KB Output is correct
32 Correct 28 ms 28764 KB Output is correct
33 Correct 1795 ms 118632 KB Output is correct
34 Correct 785 ms 66092 KB Output is correct
35 Correct 1735 ms 115412 KB Output is correct
36 Correct 809 ms 66336 KB Output is correct
37 Correct 243 ms 45596 KB Output is correct
38 Correct 170 ms 41092 KB Output is correct
39 Correct 559 ms 97712 KB Output is correct
40 Correct 224 ms 63128 KB Output is correct
41 Correct 117 ms 62920 KB Output is correct
42 Correct 614 ms 87656 KB Output is correct
43 Correct 221 ms 47352 KB Output is correct
44 Execution timed out 2056 ms 139220 KB Time limit exceeded
45 Halted 0 ms 0 KB -