oj.uz

Submission #381244

# Submission time Handle Problem Language Result Execution time Memory
381244 2021-03-24T22:13:14 Z rainboy New Home (APIO18_new_home) C
47 / 100
 5000 ms 246948 KB 
#include <stdio.h>
#include <stdlib.h>
 
#define N	300000
#define Q	300000
#define N_	(1 << 19)	/* N_ = pow2(ceil(log2(Q))) */
#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], n;
int yy[Q], yy_[Q], tt_[Q], tt1[Q], q_;
 
int compareh_y(int h1, int h2) {
	return yy[h1] - yy[h2];
}
 
int compareh_t(int h1, int h2) {
	return tt_[h1] - tt_[h2];
}
 
int compare_i(int i, int j) {
	return gg[i] != gg[j] ? gg[i] - gg[j] : xx[i] - xx[j];
}
 
int (*compare)(int, int);
 
void sort(int *ii, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;
 
		while (j < k) {
			int c = compare(ii[j], i_);
 
			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
			}
		}
		sort(ii, l, i);
		l = k;
	}
}
 
int idx(int *xx, int x) {
	int lower = -1, upper = q_;
 
	while (upper - lower > 1) {
		int h = (lower + upper) / 2;
 
		if (xx[h] <= x)
			lower = h;
		else
			upper = h;
	}
	return lower;
}
 
int *stmn[N_ * 2], *stmx[N_ * 2], eo[N_ * 2], eo1[N_ * 2], *ei[N_ * 2], eo_[N_ * 2], n_;
 
void push(int i, int x) {
	int o = eo[i]++;
 
	if (o == eo1[i]) {
		eo1[i] *= 2;
		stmn[i] = (int *) realloc(stmn[i], eo1[i] * sizeof *stmn[i]);
		stmx[i] = (int *) realloc(stmx[i], eo1[i] * sizeof *stmx[i]);
	}
	stmn[i][o] = min(o == 0 ? INF : stmn[i][o - 1], x);
	stmx[i][o] = max(o == 0 ? -INF : stmx[i][o - 1], x);
}
 
void pop(int i) {
	eo[i]--;
}
 
int getmin(int i) {
	return eo[i] == 0 ? INF : stmn[i][eo[i] - 1];
}
 
int getmax(int i) {
	return eo[i] == 0 ? -INF : stmx[i][eo[i] - 1];
}
 
void build() {
	int i;
 
	n_ = 1;
	while (n_ < q_)
		n_ <<= 1;
	for (i = 1; i < n_ * 2; i++) {
		eo1[i] = 2;
		stmn[i] = (int *) malloc(eo1[i] * sizeof *stmn[i]);
		stmx[i] = (int *) malloc(eo1[i] * sizeof *stmx[i]);
	}
	for (i = 1; i < n_ * 2; i++)
		ei[i] = (int *) malloc(2 * sizeof *ei[i]);
}
 
void update(int l, int r, int x) {
	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			push(l++, x);
		if ((r & 1) == 0)
			push(r--, x);
	}
}
 
void undo(int l, int r) {
	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			pop(l++);
		if ((r & 1) == 0)
			pop(r--);
	}
}
 
int query(int i) {
	int y, l, r;
 
	l = r = y = yy_[i];
	for (i += n_; i > 0; i >>= 1)
		l = min(l, getmin(i)), r = max(r, getmax(i));
	return l == -INF || r == INF ? -1 : max(y - l, r - y);
}
 
int mid(int a, int b) {
	return a + b > 0 ? (a + b) / 2 : -(-a + b + 1) / 2;
}
 
int pp[N], qq[N];
 
void remove_(int i) {
	int p = pp[i], q = qq[i];
 
	if (p != -1)
		qq[p] = q;
	if (q != -1)
		pp[q] = p;
	if (p == -1 && q == -1)
		update(0, q_ - 1, INF), update(0, q_ - 1, -INF);
	else if (p == -1)
		update(0, idx(yy_, xx[q]), xx[q]);
	else if (q == -1)
		update(idx(yy_, xx[p] - 1) + 1, q_ - 1, xx[p]);
	else {
		int l = idx(yy_, xx[p] - 1) + 1, h = idx(yy_, mid(xx[p], xx[q])), r = idx(yy_, xx[q]);
 
		update(l, h, xx[p]), update(h + 1, r, xx[q]);
	}
}
 
void add(int i) {
	int p = pp[i], q = qq[i];
 
	if (p != -1)
		qq[p] = i;
	if (q != -1)
		pp[q] = i;
	if (p == -1 && q == -1)
		undo(0, q_ - 1), undo(0, q_ - 1);
	else if (p == -1)
		undo(0, idx(yy_, xx[q]));
	else if (q == -1)
		undo(idx(yy_, xx[p] - 1) + 1, q_ - 1);
	else {
		int l = idx(yy_, xx[p] - 1) + 1, h = idx(yy_, mid(xx[p], xx[q])), r = idx(yy_, xx[q]);
 
		undo(l, h), undo(h + 1, r);
	}
}
 
void append_(int i, int i_) {
	int o = eo_[i]++;
 
	if (o >= 2 && (o & o - 1) == 0)
		ei[i] = (int *) realloc(ei[i], o * 2 * sizeof *ei[i]);
	ei[i][o] = i_;
}
 
void update_(int l, int r, int i_) {
	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			append_(l++, i_);
		if ((r & 1) == 0)
			append_(r--, i_);
	}
}
 
int hh[Q], inv[Q], ans[Q];
 
void solve(int i) {
	int o;
 
	for (o = eo_[i]; o--; ) {
		int i_ = ei[i][o];
 
		remove_(i_);
	}
	if (i >= n_) {
		int h = i - n_;
 
		if (h < q_)
			ans[hh[h]] = query(inv[hh[h]]);
	} else
		solve(i << 1 | 0), solve(i << 1 | 1);
	for (o = 0; o < eo_[i]; o++) {
		int i_ = ei[i][o];
 
		add(i_);
	}
}
 
int main() {
	static int tt[N * 2], ii[N], ll[N], rr[N];
	static char used[N];
	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]--;
		used[gg[i]] = 1;
	}
	for (g = 0; g < k; g++)
		if (!used[g]) {
			for (h = 0; h < q_; h++)
				printf("-1\n");
			return 0;
		}
	for (h = 0; h < q_; h++)
		scanf("%d%d", &yy[h], &tt_[h]);
	for (h = 0; h < q_; h++)
		hh[h] = h;
	compare = compareh_y, sort(hh, 0, q_);
	for (h = 0; h < q_; h++)
		yy_[h] = yy[hh[h]], inv[hh[h]] = h;
	for (i = 0; i < n; i++)
		ii[i] = i;
	compare = compare_i, sort(ii, 0, n);
	pp[ii[0]] = -1, qq[ii[n - 1]] = -1;
	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_ = idx(yy_, mid(xx[ii[h]], xx[ii[h + 1]]));
 
			qq[ii[h]] = ii[h + 1], pp[ii[h + 1]] = ii[h];
			rr[h] = h_, ll[h + 1] = h_ + 1;
		} else {
			qq[ii[h]] = -1, pp[ii[h + 1]] = -1;
			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]]);
	compare = compareh_t, sort(hh, 0, q_);
	for (h = 0; h < q_; h++)
		tt1[h] = tt_[hh[h]];
	for (i = 0; i < n; i++)
		update_(0, idx(tt1, tt[i << 1 | 0] - 1), i), update_(idx(tt1, tt[i << 1 | 1]) + 1, n_ - 1, i);
	solve(1);
	for (h = 0; h < q_; h++)
		printf("%d\n", ans[h]);
	return 0;
}

Compilation message

new_home.c: In function 'append_':
new_home.c:188:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
  188 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
new_home.c: In function 'main':
new_home.c:231:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  231 |  scanf("%d%d%d", &n, &k, &q_);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.c:233:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  233 |   scanf("%d%d%d%d", &xx[i], &gg[i], &tt[i << 1 | 0], &tt[i << 1 | 1]), gg[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.c:243:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  243 |   scanf("%d%d", &yy[h], &tt_[h]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 4 ms 620 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 3 ms 620 KB Output is correct
11 Correct 3 ms 620 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 3 ms 620 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct
17 Correct 3 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 2 ms 620 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 3 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 620 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 3 ms 620 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 4 ms 620 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 3 ms 620 KB Output is correct
11 Correct 3 ms 620 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 3 ms 620 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct
17 Correct 3 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 2 ms 620 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 3 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 620 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 3 ms 620 KB Output is correct
31 Correct 2226 ms 44320 KB Output is correct
32 Correct 863 ms 31852 KB Output is correct
33 Correct 1606 ms 34412 KB Output is correct
34 Correct 2395 ms 44836 KB Output is correct
35 Correct 2094 ms 41436 KB Output is correct
36 Correct 1520 ms 34540 KB Output is correct
37 Correct 1286 ms 36920 KB Output is correct
38 Correct 1020 ms 30956 KB Output is correct
39 Correct 904 ms 32748 KB Output is correct
40 Correct 879 ms 30828 KB Output is correct
41 Correct 1867 ms 47340 KB Output is correct
42 Correct 1904 ms 47172 KB Output is correct
43 Correct 220 ms 22248 KB Output is correct
44 Correct 1981 ms 47416 KB Output is correct
45 Correct 1943 ms 44688 KB Output is correct
46 Correct 1903 ms 40368 KB Output is correct
47 Correct 791 ms 42284 KB Output is correct
48 Correct 754 ms 36236 KB Output is correct
49 Correct 908 ms 38252 KB Output is correct
50 Correct 1006 ms 45892 KB Output is correct
51 Correct 956 ms 36332 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5091 ms 246948 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5056 ms 219216 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 4 ms 620 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 3 ms 620 KB Output is correct
11 Correct 3 ms 620 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 3 ms 620 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct
17 Correct 3 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 2 ms 620 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 3 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 620 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 3 ms 620 KB Output is correct
31 Correct 2226 ms 44320 KB Output is correct
32 Correct 863 ms 31852 KB Output is correct
33 Correct 1606 ms 34412 KB Output is correct
34 Correct 2395 ms 44836 KB Output is correct
35 Correct 2094 ms 41436 KB Output is correct
36 Correct 1520 ms 34540 KB Output is correct
37 Correct 1286 ms 36920 KB Output is correct
38 Correct 1020 ms 30956 KB Output is correct
39 Correct 904 ms 32748 KB Output is correct
40 Correct 879 ms 30828 KB Output is correct
41 Correct 1867 ms 47340 KB Output is correct
42 Correct 1904 ms 47172 KB Output is correct
43 Correct 220 ms 22248 KB Output is correct
44 Correct 1981 ms 47416 KB Output is correct
45 Correct 1943 ms 44688 KB Output is correct
46 Correct 1903 ms 40368 KB Output is correct
47 Correct 791 ms 42284 KB Output is correct
48 Correct 754 ms 36236 KB Output is correct
49 Correct 908 ms 38252 KB Output is correct
50 Correct 1006 ms 45892 KB Output is correct
51 Correct 956 ms 36332 KB Output is correct
52 Correct 375 ms 36084 KB Output is correct
53 Correct 369 ms 35668 KB Output is correct
54 Correct 1279 ms 40012 KB Output is correct
55 Correct 1347 ms 43776 KB Output is correct
56 Correct 1056 ms 41908 KB Output is correct
57 Correct 1735 ms 46184 KB Output is correct
58 Correct 1352 ms 44268 KB Output is correct
59 Correct 1100 ms 41924 KB Output is correct
60 Correct 1702 ms 46188 KB Output is correct
61 Correct 153 ms 32468 KB Output is correct
62 Correct 347 ms 35828 KB Output is correct
63 Correct 845 ms 38380 KB Output is correct
64 Correct 1031 ms 39916 KB Output is correct
65 Correct 1533 ms 46060 KB Output is correct
66 Correct 1963 ms 48364 KB Output is correct
67 Correct 1089 ms 46264 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 4 ms 620 KB Output is correct
7 Correct 2 ms 620 KB Output is correct
8 Correct 3 ms 620 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 3 ms 620 KB Output is correct
11 Correct 3 ms 620 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 3 ms 620 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct
17 Correct 3 ms 620 KB Output is correct
18 Correct 3 ms 620 KB Output is correct
19 Correct 3 ms 620 KB Output is correct
20 Correct 3 ms 620 KB Output is correct
21 Correct 2 ms 620 KB Output is correct
22 Correct 2 ms 620 KB Output is correct
23 Correct 3 ms 620 KB Output is correct
24 Correct 3 ms 620 KB Output is correct
25 Correct 3 ms 620 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 620 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 3 ms 620 KB Output is correct
31 Correct 2226 ms 44320 KB Output is correct
32 Correct 863 ms 31852 KB Output is correct
33 Correct 1606 ms 34412 KB Output is correct
34 Correct 2395 ms 44836 KB Output is correct
35 Correct 2094 ms 41436 KB Output is correct
36 Correct 1520 ms 34540 KB Output is correct
37 Correct 1286 ms 36920 KB Output is correct
38 Correct 1020 ms 30956 KB Output is correct
39 Correct 904 ms 32748 KB Output is correct
40 Correct 879 ms 30828 KB Output is correct
41 Correct 1867 ms 47340 KB Output is correct
42 Correct 1904 ms 47172 KB Output is correct
43 Correct 220 ms 22248 KB Output is correct
44 Correct 1981 ms 47416 KB Output is correct
45 Correct 1943 ms 44688 KB Output is correct
46 Correct 1903 ms 40368 KB Output is correct
47 Correct 791 ms 42284 KB Output is correct
48 Correct 754 ms 36236 KB Output is correct
49 Correct 908 ms 38252 KB Output is correct
50 Correct 1006 ms 45892 KB Output is correct
51 Correct 956 ms 36332 KB Output is correct
52 Execution timed out 5091 ms 246948 KB Time limit exceeded
53 Halted 0 ms 0 KB -