Submission #962707

#	Time	Username	Problem	Language	Result	Execution time	Memory
962707		Whisper	Vinjete (COI22_vinjete)	C++17	100 / 100	391 ms	206500 KiB

Main

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
int numNode, nLicense;
const int MAX = 1e5 + 5;
struct Edge{
    int u, v, l, r;
    Edge(){}
    Edge(int _u, int _v, int _l, int _r){
        u = _u;
        v = _v;
        l = _l;
        r = _r;
    }
    int other(int x){
        return (u ^ v ^ x);
    }
} edge[MAX];

vector<int> G[MAX];
int ans[MAX];
struct Node{
    int l, r, cnt, cover;
    Node(): l(-1), r(-1), cnt(0), cover(0){}
    Node(int _l, int _r, int _cnt, int _cover): l(_l), r(_r), cnt(_cnt), cover(_cover){}
};

struct SparseSegmentTree{
    vector<Node> st;
    int n;
    SparseSegmentTree(): st(MAX * 60), n(1){}

    void modify(int u, int v, int val, int id = 1, int l = 1, int r = 2e9){
        if (u > r || v < l) return;
        if (u <= l && v >= r) {
            st[id].cover += val;
            if (st[id].cover != 0) st[id].cnt = r - l + 1;
            else if(l != r) st[id].cnt = st[st[id].l].cnt + st[st[id].r].cnt;
            else st[id].cnt = 0;
            return;
        }
        if (st[id].l == -1) st[id].l = ++n;
        if (st[id].r == -1) st[id].r = ++n;
        int mid = (l + r) >> 1;
        modify(u, v, val, st[id].l, l, mid);
        modify(u, v, val, st[id].r, mid + 1, r);
        if (st[id].cover != 0) st[id].cnt = r - l + 1;
        else st[id].cnt = st[st[id].l].cnt + st[st[id].r].cnt;
    }

    int query(int u, int v, int id = 1, int l = 1, int r = 2e9){
        if (u > r || v < l) return 0;
        if (u <= l && v >= r) return st[id].cnt;
        int mid = (l + r) >> 1;
        if (st[id].l == -1) st[id].l = ++n;
        if (st[id].r == -1) st[id].r = ++n;

        int ql = query(u, v, st[id].l, l, mid);
        int qr = query(u, v, st[id].r, mid + 1, r);
        return (ql + qr);
    }
} st;
void dfs(int u, int p = -1){
    ans[u] = st.st[1].cnt;
    for (int&i : G[u]) {
        int v = edge[i].other(u);
        int l = edge[i].l, r = edge[i].r;
        if(v ^ p){
            st.modify(l, r, 1);
            dfs(v, u);
            st.modify(l, r, -1);
        }
    }
}
void Whisper(){
    cin >> numNode >> nLicense;
    for (int i = 1; i < numNode; ++i){
        cin >> edge[i].u >> edge[i].v >> edge[i].l >> edge[i].r;
        G[edge[i].u].emplace_back(i);
        G[edge[i].v].emplace_back(i);
    }
    dfs(1);
    for (int i = 2; i <= numNode; ++i) cout << ans[i] << '\n';
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

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