Submission #953545

#	Time	Username	Problem	Language	Result	Execution time	Memory
953545		tnknguyen_	Vinjete (COI22_vinjete)	C++14	100 / 100	519 ms	193292 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n' 
#define pii pair<int, int>
 
const int MX = 1e5 + 5;
vector<pair<int, pii>> gr[MX];
int L[MX], R[MX], f[MX];
int ans[MX];
 
struct node{
    int good, sum;
    node *l, *r;

    node(){
        this->good = this->sum = 0;
        this->l = this->r = NULL;
    }
};
 
struct SMT{ 
    // vector<node> tree;
    node *root;
    int n;
 
    SMT(){
        // tree.assign(4*n + 5, node());
        this->n = 1e9 + 5;
        this->root = new node();
    };
 
    node *update(node *cur, int l, int r, int u, int v, int val){
        if(r < u || l > v){
            return cur;
        }
        if(cur == NULL){
            cur = new node();
        }
        if(u <= l && r <= v){
            cur->good += val;
            cur->sum = (cur->good ? r-l+1 : (cur->l ? cur->l->sum : 0) + (cur->r ? cur->r->sum : 0));
            // tree[id].good += val;
            // tree[id].sum = (tree[id].good ? r-l+1 : tree[2*id].sum + tree[2*id+1].sum);
            return cur;
        }
        int mid = (l + r) >> 1;
        cur->l = update(cur->l, l, mid, u, v, val);
        cur->r = update(cur->r, mid+1, r, u, v, val);
 
        // tree[id].sum = (tree[id].good ? r-l+1 : tree[ID].sum + tree[ID|1].sum);
        cur->sum = (cur->good ? r-l+1 : (cur->l ? cur->l->sum : 0) + (cur->r ? cur->r->sum : 0));
        return cur;
    }
 
    void update(int l, int r, int val){
        root = update(root, 1, n, l, r, val);
    }
 
    int get(node *cur, int l, int r, int u, int v){
        if(r < u || l > v || cur == NULL){
            return 0;
        }
        if(u <= l && r <= v){
            return cur->sum;
        }
        int mid = (l + r) >> 1;
        return get(cur->l, l, mid, u, v) + get(cur->r, mid+1, r, u, v);
    }
};
SMT smt;
 
void dfs(int u, int p){
    ans[u] = smt.root->sum;
    for(pair<int, pii> e : gr[u]){
        int v, l, r;
        v = e.first;
        tie(l, r) = e.second;
        if(v != p){
            smt.update(l, r, 1);
            dfs(v, u);
            smt.update(l, r, -1);
        }
    }
}
 
int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
 
//    freopen("main.inp","r",stdin);
//    freopen("main.out","w",stdout);
 
    int n, m;
    cin>>n>>m;
 
    for(int i=1; i<n; ++i){
        int u, v, l, r;
        cin>>u>>v>>l>>r;
        gr[u].push_back({v, {l, r}});
        gr[v].push_back({u, {l, r}});
    }
 
    dfs(1, 0);
 
    for(int i=2; i<=n; ++i){
        cout<<ans[i]<<endl;
    }
 
    return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 16 / 16
• Subtask 4: 29 / 29
• Subtask 5: 31 / 31