Submission #678871

#	Time	Username	Problem	Language	Result	Execution time	Memory
678871		MilosMilutinovic	trapezoid (balkan11_trapezoid)	C++14	100 / 100	174 ms	21804 KiB

trapezoid

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <chrono>
#include <random>
#include <bitset>
#include <array>
using namespace std;

#ifdef LOCAL
	#define eprintf(...) {fprintf(stderr, __VA_ARGS__);fflush(stderr);}
#else
	#define eprintf(...) 42
#endif

using ll = long long;
using ld = long double;
using uint = unsigned int;
using ull = unsigned long long;
template<typename T>
using pair2 = pair<T, T>;
using pii = pair<int, int>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
	return (ull)rng() % B;
}

#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second

clock_t startTime;
double getCurrentTime() {
	return (double)(clock() - startTime) / CLOCKS_PER_SEC;
}

const int N = 100100;
int n;
int a[N];
int b[N];
int c[N];
int d[N];
vector<int> ev[2 * N];

void compress(int* v, int* u) {
	vector<int> xs;
	for (int i = 0; i < n; i++) {
		xs.push_back(v[i]);
		xs.push_back(u[i]);
	}
	sort(xs.begin(), xs.end());
	xs.erase(unique(xs.begin(), xs.end()), xs.end());
	for (int i = 0; i < n; i++) {
		v[i] = lower_bound(xs.begin(), xs.end(), v[i]) - xs.begin();
		u[i] = lower_bound(xs.begin(), xs.end(), u[i]) - xs.begin();
	}
}

const int MOD = 30013;
int add(int a, int b) {
	return a + b < MOD ? a + b : a + b - MOD;
}

struct Node {
	int sz, ways;

	Node() : sz(-1), ways(0) {}
	Node(int _sz, int _ways) : sz(_sz), ways(_ways) {}
};
Node const operator + (Node x, Node y) {
	Node w;
	w.sz = max(x.sz, y.sz);
	w.ways = 0;
	if (x.sz == w.sz) w.ways = add(w.ways, x.ways);
	if (y.sz == w.sz) w.ways = add(w.ways, y.ways);
	return w;
}
const int K = (1 << 20);
Node st[K];
Node dp[N];

void buildDP(int p, int l, int r) {
	st[p] = Node(0, 0);
	if (l == r) return;
	int mid = l + (r - l) / 2;
	buildDP(p * 2, l, mid);
	buildDP(p * 2 + 1, mid + 1, r);
}
Node getDP(int p, int l, int r, int tl, int tr) {
	if (l > r || l > tr || r < tl) return Node(-1, 0);
	if (tl <= l && r <= tr) return st[p];
	int mid = l + (r - l) / 2;
	return getDP(p * 2, l, mid, tl, tr) + getDP(p * 2 + 1, mid + 1, r, tl, tr);
}
void updateDP(int p, int l, int r, int i, Node nd) {
	if (l == r) {
		st[p] = st[p] + nd;
		return;
	}
	int mid = l + (r - l) / 2;
	if (i <= mid)
		updateDP(p * 2, l, mid, i, nd);
	else
		updateDP(p * 2 + 1, mid + 1, r, i, nd);
	st[p] = st[p * 2] + st[p * 2 + 1];
}

int main()
{
	startTime = clock();
//	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);

	scanf("%d", &n);
	for (int i = 0; i < n; i++)
		scanf("%d%d%d%d", &a[i], &b[i], &c[i], &d[i]);
	compress(a, b);
	compress(c, d);
	for (int i = 0; i < n; i++) {
		ev[a[i]].push_back(~i);
		ev[b[i]].push_back(i);
	}
	buildDP(1, -1, 2 * N);
	for (int i = 0; i < 2 * N; i++) {
		sort(ev[i].begin(), ev[i].end());
		for (int p : ev[i]) {
			if (p < 0) {
				p = (~p);
				dp[p] = getDP(1, -1, 2 * N, -1, c[p] - 1);
				dp[p].sz += 1;
				if (dp[p].sz == 1) dp[p].ways = 1;
			} else {
				updateDP(1, -1, 2 * N, d[p], dp[p]);
			}
		}
	}
	printf("%d %d\n", st[1].sz, st[1].ways);

	return 0;
}

Compilation message (stderr)

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:131:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  131 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
trapezoid.cpp:133:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  133 |   scanf("%d%d%d%d", &a[i], &b[i], &c[i], &d[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100