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답안 #381229

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
381229 2021-03-24T20:27:15 Z rainboy 새 집 (APIO18_new_home) C
12 / 100
 3808 ms 31372 KB 
#include <stdio.h>

#define N	300000
#define Q	300000
#define N_	(1 << 19)	/* N_ = pow2(ceil(log2(Q))) */
#define K	400
#define INF	0x3f3f3f3f

int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }

unsigned int X = 12345;

int rand_() {
	return (X *= 3) >> 1;
}

int xx[N], gg[N], tt[N * 2 + Q], n;
int yy[Q], q;

int compare1(int h1, int h2) {
	int type1, type2;

	if (tt[h1] != tt[h2])
		return tt[h1] - tt[h2];
	type1 = h1 < n * 2 ? ((h1 & 1) == 0 ? 1 : -1) : 0;
	type2 = h2 < n * 2 ? ((h2 & 1) == 0 ? 1 : -1) : 0;
	return type2 - type1;
}

int compare2(int h1, int h2) {
	return yy[h1] - yy[h2];
}

int compare3(int i, int j) {
	return gg[i] != gg[j] ? gg[i] - gg[j] : xx[i] - xx[j];
}

int (*compare)(int, int);

void sort(int *hh, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, h = hh[l + rand_() % (r - l)], tmp;

		while (j < k) {
			int c = compare(hh[j], h);

			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = hh[i], hh[i] = hh[j], hh[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = hh[j], hh[j] = hh[k], hh[k] = tmp;
			}
		}
		sort(hh, l, i);
		l = k;
	}
}

int zz[1 + N], ll[1 + N], rr[1 + N], ii_[1 + N], u_, l_, r_;

int node(int i) {
	static int _ = 1;

	zz[_] = rand_();
	ii_[_] = i;
	return _++;
}

void split(int u, int i) {
	int c;

	if (u == 0) {
		u_ = l_ = r_ = 0;
		return;
	}
	c = xx[ii_[u]] != xx[i] ? xx[ii_[u]] - xx[i] : ii_[u] - i;
	if (c < 0) {
		split(rr[u], i);
		rr[u] = l_, l_ = u;
	} else if (c > 0) {
		split(ll[u], i);
		ll[u] = r_, r_ = u;
	} else {
		u_ = u, l_ = ll[u], r_ = rr[u];
		ll[u] = rr[u] = 0;
	}
}

int merge(int u, int v) {
	if (u == 0)
		return v;
	if (v == 0)
		return u;
	if (zz[u] < zz[v]) {
		rr[u] = merge(rr[u], v);
		return u;
	} else {
		ll[v] = merge(u, ll[v]);
		return v;
	}
}

int tr_update(int u, int i) {
	split(u, i);
	return merge(merge(l_, u_ == 0 ? node(i) : 0), r_);
}

int tr_query(int u, int x) {
	int d;

	d = INF;
	while (u)
		if (xx[ii_[u]] < x)
			d = min(d, x - xx[ii_[u]]), u = rr[u];
		else
			d = min(d, xx[ii_[u]] - x), u = ll[u];
	return d;
}

int hh[N * 2 + Q]; 

int search(int x) {
	int lower = -1, upper = q;

	while (upper - lower > 1) {
		int h = (lower + upper) / 2;

		if (yy[hh[h]] * 2 <= x)
			lower = h;
		else
			upper = h;
	}
	return lower;
}

int stmn[N_ * 2], stmx[N_ * 2], n_;

void build() {
	int i;

	n_ = 1;
	while (n_ < q)
		n_ <<= 1;
	for (i = 1; i < n_ * 2; i++)
		stmn[i] = INF, stmx[i] = -INF;
}

void update(int l, int r, int x) {
	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			stmn[l] = min(stmn[l], x), stmx[l] = max(stmx[l], x), l++;
		if ((r & 1) == 0)
			stmn[r] = min(stmn[r], x), stmx[r] = max(stmx[r], x), r--;
	}
}

int query(int i) {
	int y, l, r;

	l = r = y = yy[hh[i]];
	for (i += n_; i > 0; i >>= 1)
		l = min(l, stmn[i]), r = max(r, stmx[i]);
	return max(y - l, r - y);
}

int main() {
	static int ll_[N], rr_[N], ii[N], tr[K], ans[Q];
	int k, g, h, i;

	scanf("%d%d%d", &n, &k, &q);
	for (i = 0; i < n; i++)
		scanf("%d%d%d%d", &xx[i], &gg[i], &tt[i << 1 | 0], &tt[i << 1 | 1]), gg[i]--;
	for (h = 0; h < q; h++)
		scanf("%d%d", &yy[h], &tt[n * 2 + h]);
	if (k <= 400) {
		for (h = 0; h < n * 2 + q; h++)
			hh[h] = h;
		compare = compare1, sort(hh, 0, n * 2 + q);
		for (h = 0; h < n * 2 + q; h++) {
			int h_ = hh[h];

			if (h_ >= n * 2) {
				h_ -= n * 2;
				for (g = 0; g < k; g++)
					ans[h_] = max(ans[h_], tr_query(tr[g], yy[h_]));
				if (ans[h_] == INF)
					ans[h_] = -1;
			} else {
				i = h_ >> 1;
				tr[gg[i]] = tr_update(tr[gg[i]], i);
			}
		}
	} else {
		for (h = 0; h < q; h++)
			hh[h] = h;
		compare = compare2, sort(hh, 0, q);
		for (i = 0; i < n; i++) {
			tr[gg[i]] = tr_update(tr[gg[i]], i);
			ii[i] = i;
		}
		compare = compare3, sort(ii, 0, n);
		ll_[0] = 0, rr_[n - 1] = q - 1;
		for (h = 0; h + 1 < n; h++)
			if (gg[ii[h]] == gg[ii[h + 1]]) {
				int h_ = search(xx[ii[h]] + xx[ii[h + 1]]);

				rr_[h] = h_, ll_[h + 1] = h_ + 1;
			} else
				rr_[h] = q - 1, ll_[h + 1] = 0;
		build();
		for (h = 0; h < n; h++)
			if (ll_[h] <= rr_[h])
				update(ll_[h], rr_[h], xx[ii[h]]);
		for (h = 0; h < q; h++)
			ans[hh[h]] = query(h);
	}
	for (h = 0; h < q; h++)
		printf("%d\n", ans[h]);
	return 0;
}

Compilation message

new_home.c: In function 'main':
new_home.c:174:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  174 |  scanf("%d%d%d", &n, &k, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.c:176:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  176 |   scanf("%d%d%d%d", &xx[i], &gg[i], &tt[i << 1 | 0], &tt[i << 1 | 1]), gg[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.c:178:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  178 |   scanf("%d%d", &yy[h], &tt[n * 2 + h]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 2 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct
17 Correct 3 ms 364 KB Output is correct
18 Correct 2 ms 364 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 2 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 2 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct
17 Correct 3 ms 364 KB Output is correct
18 Correct 2 ms 364 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 2 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 3808 ms 4092 KB Output is correct
32 Correct 152 ms 3820 KB Output is correct
33 Correct 318 ms 4076 KB Output is correct
34 Correct 2651 ms 4408 KB Output is correct
35 Correct 1781 ms 4160 KB Output is correct
36 Correct 394 ms 4008 KB Output is correct
37 Correct 258 ms 4076 KB Output is correct
38 Correct 162 ms 4076 KB Output is correct
39 Correct 123 ms 4076 KB Output is correct
40 Correct 129 ms 4076 KB Output is correct
41 Correct 293 ms 4132 KB Output is correct
42 Correct 370 ms 4076 KB Output is correct
43 Correct 665 ms 4332 KB Output is correct
44 Correct 258 ms 4248 KB Output is correct
45 Correct 141 ms 4204 KB Output is correct
46 Correct 99 ms 4204 KB Output is correct
47 Correct 87 ms 3820 KB Output is correct
48 Correct 83 ms 3820 KB Output is correct
49 Correct 100 ms 3948 KB Output is correct
50 Correct 222 ms 3960 KB Output is correct
51 Correct 95 ms 4076 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 289 ms 31372 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 289 ms 17264 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 2 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct
17 Correct 3 ms 364 KB Output is correct
18 Correct 2 ms 364 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 2 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 3808 ms 4092 KB Output is correct
32 Correct 152 ms 3820 KB Output is correct
33 Correct 318 ms 4076 KB Output is correct
34 Correct 2651 ms 4408 KB Output is correct
35 Correct 1781 ms 4160 KB Output is correct
36 Correct 394 ms 4008 KB Output is correct
37 Correct 258 ms 4076 KB Output is correct
38 Correct 162 ms 4076 KB Output is correct
39 Correct 123 ms 4076 KB Output is correct
40 Correct 129 ms 4076 KB Output is correct
41 Correct 293 ms 4132 KB Output is correct
42 Correct 370 ms 4076 KB Output is correct
43 Correct 665 ms 4332 KB Output is correct
44 Correct 258 ms 4248 KB Output is correct
45 Correct 141 ms 4204 KB Output is correct
46 Correct 99 ms 4204 KB Output is correct
47 Correct 87 ms 3820 KB Output is correct
48 Correct 83 ms 3820 KB Output is correct
49 Correct 100 ms 3948 KB Output is correct
50 Correct 222 ms 3960 KB Output is correct
51 Correct 95 ms 4076 KB Output is correct
52 Runtime error 57 ms 4588 KB Execution killed with signal 11
53 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 2 ms 364 KB Output is correct
7 Correct 2 ms 364 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 2 ms 364 KB Output is correct
17 Correct 3 ms 364 KB Output is correct
18 Correct 2 ms 364 KB Output is correct
19 Correct 2 ms 512 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 2 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 3808 ms 4092 KB Output is correct
32 Correct 152 ms 3820 KB Output is correct
33 Correct 318 ms 4076 KB Output is correct
34 Correct 2651 ms 4408 KB Output is correct
35 Correct 1781 ms 4160 KB Output is correct
36 Correct 394 ms 4008 KB Output is correct
37 Correct 258 ms 4076 KB Output is correct
38 Correct 162 ms 4076 KB Output is correct
39 Correct 123 ms 4076 KB Output is correct
40 Correct 129 ms 4076 KB Output is correct
41 Correct 293 ms 4132 KB Output is correct
42 Correct 370 ms 4076 KB Output is correct
43 Correct 665 ms 4332 KB Output is correct
44 Correct 258 ms 4248 KB Output is correct
45 Correct 141 ms 4204 KB Output is correct
46 Correct 99 ms 4204 KB Output is correct
47 Correct 87 ms 3820 KB Output is correct
48 Correct 83 ms 3820 KB Output is correct
49 Correct 100 ms 3948 KB Output is correct
50 Correct 222 ms 3960 KB Output is correct
51 Correct 95 ms 4076 KB Output is correct
52 Runtime error 289 ms 31372 KB Execution killed with signal 11
53 Halted 0 ms 0 KB -