Submission #680807

#	Time	Username	Problem	Language	Result	Execution time	Memory
680807		stevancv	trapezoid (balkan11_trapezoid)	C++14	0 / 100	114 ms	46020 KiB

trapezoid

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
#define sadd(a, b) a = Add(a, b)
#define smul(a, b) a = Mul(a, b)
using namespace std;
const int N = 1e5 + 2;
const int mod = 30013;
int Add(int a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    return a;
}
struct Node {
    Node() {
        x = y = 0;
    }
    Node(int a, int b) {
        x = a; y = b;
    }
    int x, y;
};
Node Merge(Node a, Node b) {
    Node c;
    if (a.x > b.x) c = a;
    else if (a.x < b.x) c = b;
    else c = Node(a.x, Add(a.y, b.y));
}
Node st[8 * N];
void Set(int node, int l, int r, int p, int x, int y) {
    if (l == r) {
        st[node] = Node(x, y);
        return;
    }
    int mid = l + r >> 1;
    if (p <= mid) Set(2 * node, l, mid, p, x, y);
    else Set(2 * node + 1, mid + 1, r, p, x, y);
    st[node] = Merge(st[2 * node], st[2 * node + 1]);
}
Node Get(int node, int l, int r, int ql, int qr) {
    if (r < ql || qr < l) return Node();
    if (ql <= l && r <= qr) return st[node];
    int mid = l + r >> 1;
    return Merge(Get(2 * node, l, mid, ql, qr), Get(2 * node + 1, mid + 1, r, ql, qr));
}
Node ans[N];
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n; cin >> n;
    vector<int> a(n), b(n), c(n), d(n);
    vector<array<int, 3>> all;
    vector<int> v;
    for (int i = 0; i < n; i++) {
        cin >> a[i] >> b[i] >> c[i] >> d[i];
        all.push_back({a[i], i, 0});
        all.push_back({b[i], i, 1});
        v.push_back(c[i]); v.push_back(d[i]);
    }
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(), v.end()), v.end());
    sort(all.begin(), all.end());
    map<int, int> mp;
    int x = 0;
    for (int i : v) mp[i] = x++;
    for (auto u : all) {
        if (u[2] == 0) {
            ans[u[1]] = Get(1, 0, x - 1, 0, mp[c[u[1]]]);
            ans[u[1]].x += 1;
            if (ans[u[1]].x == 1) ans[u[1]].y += 1;
        }
        else Set(1, 0, x - 1, mp[d[u[1]]], ans[u[1]].x, ans[u[1]].y);
    }
    int mx = 0;
    for (int i = 0; i < n; i++) smax(mx, ans[i].x);
    int sol = 0;
    for (int i = 0; i < n; i++) if (ans[i].x == mx) sol = Add(sol, ans[i].y);
    cout << mx << en;
    cout << sol << en;
    return 0;
}

Compilation message (stderr)

trapezoid.cpp: In function 'Node Merge(Node, Node)':
trapezoid.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type]
   32 | }
      | ^
trapezoid.cpp: In function 'void Set(int, int, int, int, int, int)':
trapezoid.cpp:39:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   39 |     int mid = l + r >> 1;
      |               ~~^~~
trapezoid.cpp: In function 'Node Get(int, int, int, int, int)':
trapezoid.cpp:47:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |     int mid = l + r >> 1;
      |               ~~^~~

• Subtask 1: 0 / 100