Submission #874337

#	Time	Username	Problem	Language	Result	Execution time	Memory
874337		Macker	trapezoid (balkan11_trapezoid)	C++17	100 / 100	192 ms	11516 KiB

trapezoid

#include <iostream> // #include <fstream>
#include <vector>
#include <list>
#include <algorithm>
#include <math.h>
#include <tuple>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <set>
#include <map>
#include <array>
#include <climits>
#include <cassert>

using namespace std;
typedef long long ll;
#define all(v) v.begin(), v.end()

//ifstream cin("optmilk.in");
//ofstream cout("optmilk.out");

vector<pair<int, int>> st;
int len = 1;
int mod = 30013;

vector<int> xs;
int cx(int x) {
    return lower_bound(all(xs), x) - xs.begin();
}

pair<int, int> query(int f, int t, int i = 1, int s = 0, int e = len) {
    if (f >= e || t <= s) return { -1, -1 };
    if (f <= s && e <= t) return st[i];

    pair<int, int> a = query(f, t, i * 2, s, (s + e) / 2);
    pair<int, int> b = query(f, t, i * 2 + 1, (s + e) / 2, e);
    if (a.first > b.first) return a;
    if (a.first < b.first) return b;
    if (a.first == b.first) return { a.first, (a.second + b.second) % mod };
}

void add(int idx, int val, int cnt, int i = 1, int s = 0, int e = len) {
    if (s > idx || e <= idx) return;
    if (s == idx && s == e - 1) {
        if (st[i].first == val) st[i].second = (st[i].second + cnt) % mod;
        if (st[i].first < val) st[i] = { val, cnt % mod };
        return;
    }
    add(idx, val, cnt, i * 2, s, (s + e) / 2);
    add(idx, val, cnt, i * 2 + 1, (s + e) / 2, e);
    if (st[i * 2].first == st[i * 2 + 1].first) st[i] = { st[i * 2].first, st[i * 2].second + st[i * 2 + 1].second };
    if (st[i * 2].first > st[i * 2 + 1].first) st[i] = st[i * 2];
    if (st[i * 2].first < st[i * 2 + 1].first) st[i] = st[i * 2 + 1];
    st[i].second %= mod;
}

int main()
{
    int n; cin >> n;
    vector<array<int, 5>> ev; // y, t - 0add/1query, x1, -1/(val, val)
    for (int i = 0; i < n; i++) {
        int y, yy, x, xx; cin >> x >> xx >> y >> yy;
        ev.push_back({ y, 1, x, yy, -1 });
        ev.push_back({ yy, 0, xx, -1, -1 });
        xs.push_back(x);
        xs.push_back(xx);
    }
    sort(all(ev));
    sort(all(xs));
    while (len < xs.size()) len *= 2;
    st.resize(len * 2, { 0, 0 });
    
    for (int i = 0; i < ev.size(); i++) {
        int y = ev[i][0], t = ev[i][1], x = ev[i][2];
        if (t == 1) {
            pair<int, int> val = query(0, cx(x) + 1);
            if (val.first == 0) val.second = 1;
            array<int, 5>& tmp = *lower_bound(all(ev), array<int, 5>({ev[i][3], -1, -1, -1, -1 }));
            tmp[3] = val.first + 1; tmp[4] = val.second % mod;
        }
        else {
            int ans = ev[i][3], cnt = ev[i][4];
            add(cx(x), ans, cnt);
        }
    }

    cout << st[1].first << " " << st[1].second % mod << endl;
}

Compilation message (stderr)

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:71:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |     while (len < xs.size()) len *= 2;
      |            ~~~~^~~~~~~~~~~
trapezoid.cpp:74:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 5> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |     for (int i = 0; i < ev.size(); i++) {
      |                     ~~^~~~~~~~~~~
trapezoid.cpp:75:13: warning: unused variable 'y' [-Wunused-variable]
   75 |         int y = ev[i][0], t = ev[i][1], x = ev[i][2];
      |             ^
trapezoid.cpp: In function 'std::pair<int, int> query(int, int, int, int, int)':
trapezoid.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type]
   41 | }
      | ^

• Subtask 1: 100 / 100