Submission #1094157

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094157		VMaksimoski008	trapezoid (balkan11_trapezoid)	C++17	5 / 100	205 ms	33916 KiB

trapezoid

#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;

struct SegTree {
    int n;
    vector<pii> tree;

    SegTree(int _n) : n(_n), tree(4*_n, {0, 0}) {}

    pii merge(pii a, pii b) {
        if(a.first > b.first) return a;
        if(a.first < b.first) return b;
        return { a.first, a.second + b.second };
    }

    void update(int u, int tl, int tr, int p, int v, int w) {
        if(tl == tr) {
            tree[u] = merge(tree[u], { v, w });
        } else {
            int tm = (tl + tr) / 2;
            if(p <= tm) update(2*u, tl, tm, p, v, w);
            else update(2*u+1, tm+1, tr, p, v, w);
            tree[u] = merge(tree[2*u], tree[2*u+1]);
        }
    }

    pii query(int u, int tl, int tr, int l, int r) {
        if(l > tr || tl > r) return { 0, 0 };
        if(l <= tl && tr <= r) return tree[u];
        int tm = (tl + tr) / 2;
        return merge(query(2*u, tl, tm, l, r), query(2*u+1, tm+1, tr, l, r));
    }

    void update(int p, int v, int w) { update(1, 0, n-1, p, v, w); }
    pii query(int l, int r) { return query(1, 0, n-1, l, r); }
};

signed main() {
    ios_base::sync_with_stdio(false);
    cout.tie(0); cin.tie(0);

    int n; cin >> n;
    vector<array<int, 4> > v(n);
    set<int> s;
    for(int i=0; i<n; i++) {
        for(int j=0; j<4; j++) cin >> v[i][j];
        for(int j=0; j<4; j++) s.insert(v[i][j]);
    }

    vector<int> comp(s.begin(), s.end());
    sort(v.begin(), v.end());
    for(int i=0; i<n; i++)
        for(int j=0; j<4; j++) v[i][j] = lower_bound(comp.begin(), comp.end(), v[i][j]) - comp.begin();

    vector<pii> dp(n);
    SegTree tree(comp.size());
    priority_queue<pii> pq;
    for(int i=0; i<n; i++) {
        dp[i] = { 1, 1 };
        while(!pq.empty() && pq.top().first < v[i][0]) {
            tree.update(v[pq.top().second][3], dp[pq.top().second].first, dp[pq.top().second].second);
            pq.pop();
        }
        auto res = tree.query(0, v[i][2]-1);
        if(res.first) dp[i] = { res.first + 1, res.second };
        pq.push({ v[i][1], i }); 
    }

    while(!pq.empty()) {
        tree.update(v[pq.top().second][3], dp[pq.top().second].first, dp[pq.top().second].second);
        pq.pop();
    }
    auto [mx, ways] = tree.query(0, comp.size() - 1);
    cout << mx << " " << ways << '\n';
    return 0;
}

• Subtask 1: 5 / 100