oj.uz

답안 #482252

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
482252 2021-10-23T21:53:59 Z nonsensenonsense1 새 집 (APIO18_new_home) C++17
10 / 100
 5000 ms 17644 KB 
#include <cstdio>
#include <utility>
#include <algorithm>
#include <cstring>
#include <vector>

const int INF = 0x3f3f3f3f;

struct store {
	int x, t, l, r;
	bool operator<(store arg) {
		return x < arg.x;
	}
};

struct query {
	int l, y, ind;
	bool operator<(query arg) {
		return y < arg.y;
	}
};

bool cmp_l(query a, query b) 
{
	return a.l < b.l;
}

const int N = 300000;
const int K = 500;
int n, k, q, next[N + 1], type_amt[N], ans[N], it[N], fi[N], last[N], right[N], to[N];
bool ut[N], active[N];
store a[N + 1];
query qr[N];

int main() 
{
	scanf("%d%d%d", &n, &k, &q);
	a[n].x = INF;
	next[n] = n;
	memset(to, 0x3f, k << 2);
	for (int i = 0; i < n; ++i) {
		scanf("%d%d%d%d", &a[i].x, &a[i].t, &a[i].l, &a[i].r);
		--a[i].t;
		++a[i].r;
	}
	std::sort(a, a + n);
	for (int i = 0; i < q; ++i) {
		scanf("%d%d", &qr[i].l, &qr[i].y);
		qr[i].ind = i;
	}
	std::sort(qr, qr + q);
	std::vector<int> inter, inter_type;
	for (int i = 0; i < q;) {
		memset(ut, 0, k);
		int until = std::min(i + K, q);
		inter.resize(0);
		inter_type.resize(0);
		for (int j = 0; j < n; ++j) if (a[j].l >= qr[i].y + 1 && a[j].l <= qr[until - 1].y || a[j].r >= qr[i].y + 1 && a[j].r <= qr[until - 1].y) {
			if (!ut[a[j].t]) {
				inter_type.push_back(a[j].t);
				fi[a[j].t] = n;
			}
			ut[a[j].t] = 1;
			inter.push_back(j);
		}
		memset(last, -1, n << 2);
		for (int j = 0; j < n; ++j) {
			if (a[j].l <= qr[i].y && a[j].r > qr[until - 1].y) {
				if (ut[a[j].t]) {
					active[j] = false;
					if (last[a[j].t] == -1) fi[a[j].t] = j;
					else next[last[a[j].t]] = j;
					last[a[j].t] = j;
					next[j] = n;
				}
				else active[j] = true;
			}
			else active[j] = false;
		}
		for (int j = 0, l = 0, amt = 0; j < n; ++j) {
			while (l == j || l <= n && amt < k - inter_type.size()) {
				if (l < n && active[l]) {
					if (!type_amt[a[l].t]) ++amt;
					++type_amt[a[l].t];
				}
				++l;
			}
			right[j] = l;
			if (active[j]) {
				--type_amt[a[j].t];
				if (!type_amt[a[j].t]) --amt;
			}
		}
		std::sort(qr + i, qr + until, cmp_l);
		for (int j = 0; i < until; ++i) {
			while (qr[i].l - a[j].x > a[right[j] - 1].x - qr[i].l) ++j;
			int res = std::min(j ? qr[i].l - a[j - 1].x : INF, a[right[j] - 1].x - qr[i].l);
			for (int k = 0; k < (int)inter.size(); ++k) if (a[inter[k]].l <= qr[i].y && a[inter[k]].r > qr[i].y) to[a[inter[k]].t] = std::min(to[a[inter[k]].t], abs(qr[i].l - a[inter[k]].x));
			for (int k = 0; k < (int)inter_type.size() && res <= INF >> 1; ++k) {
				int cur = inter_type[k], &pos = fi[cur];
				while (a[next[pos]].x <= qr[i].l) pos = next[pos];
				res = std::max(res, std::min(to[cur], std::min(abs(qr[i].l - a[pos].x), a[next[pos]].x - qr[i].l)));
				to[cur] = INF;
			}
			ans[qr[i].ind] = res > INF / 2 ? -1 : res;
		}
	}
	for (int i = 0; i < q; ++i) printf("%d\n", ans[i]);
	return 0;
}

Compilation message

new_home.cpp: In function 'int main()':
new_home.cpp:58:57: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   58 |   for (int j = 0; j < n; ++j) if (a[j].l >= qr[i].y + 1 && a[j].l <= qr[until - 1].y || a[j].r >= qr[i].y + 1 && a[j].r <= qr[until - 1].y) {
      |                                   ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:81:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |    while (l == j || l <= n && amt < k - inter_type.size()) {
      |                               ~~~~^~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:81:28: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   81 |    while (l == j || l <= n && amt < k - inter_type.size()) {
      |                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  scanf("%d%d%d", &n, &k, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |   scanf("%d%d%d%d", &a[i].x, &a[i].t, &a[i].l, &a[i].r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:48:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |   scanf("%d%d", &qr[i].l, &qr[i].y);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 232 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Incorrect 2 ms 332 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 232 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Incorrect 2 ms 332 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2213 ms 15588 KB Output is correct
2 Correct 2565 ms 13724 KB Output is correct
3 Correct 2642 ms 17644 KB Output is correct
4 Correct 2269 ms 15888 KB Output is correct
5 Correct 2306 ms 13344 KB Output is correct
6 Correct 2973 ms 13724 KB Output is correct
7 Correct 2659 ms 17636 KB Output is correct
8 Correct 2319 ms 15888 KB Output is correct
9 Correct 2202 ms 15268 KB Output is correct
10 Correct 2272 ms 14372 KB Output is correct
11 Correct 2236 ms 13924 KB Output is correct
12 Correct 2198 ms 14472 KB Output is correct

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5091 ms 13580 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 232 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Incorrect 2 ms 332 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 232 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Incorrect 2 ms 332 KB Output isn't correct
7 Halted 0 ms 0 KB -