oj.uz

답안 #645724

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
645724 2022-09-27T18:01:57 Z rainboy Fish 2 (JOI22_fish2) C
8 / 100
 4000 ms 4072 KB 
#include <stdio.h>
#include <string.h>

#define N	100000
#define N_	(1 << 17)	/* N_ = pow2(ceil(log2(N + 1))) */
#define INF	0x3f3f3f3f
#define LG	30

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

int aa[N], st1[N_ * 2], st2[N_ * 2], kk2[N_ * 2], lz2[N_], h_, n_;

void pul1(int i) {
	st1[i] = min(st1[i << 1 | 0] + st1[i << 1 | 1], INF);
}

void build(int *aa, int n) {
	int i;

	h_ = 0;
	while (1 << h_ <= n)
		h_++;
	n_ = 1 << h_;
	for (i = 0; i < n; i++)
		st1[n_ + i] = aa[i], kk2[n_ + i] = 1;
	for (i = n_ - 1; i > 0; i--)
		pul1(i);
}

void update1(int i, int a) {
	i += n_;
	st1[i] = a;
	while (i > 1)
		pul1(i >>= 1);
}

int queryl1(int r, int s) {
	int l = 0;

	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
		if ((r & 1) == 0) {
			if (s > st1[r])
				s -= st1[r--];
			else {
				while (r < n_)
					if (s <= st1[r << 1 | 1])
						r = r << 1 | 1;
					else
						s -= st1[r << 1 | 1], r = r << 1 | 0;
				return r - n_;
			}
		}
	return -1;
}

int queryr1(int l, int s) {
	int r = n_ - 1;

	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
		if ((l & 1) == 1) {
			if (s > st1[l])
				s -= st1[l++];
			else {
				while (l < n_)
					if (s <= st1[l << 1 | 0])
						l = l << 1 | 0;
					else
						s -= st1[l << 1 | 0], l = l << 1 | 1;
				return l - n_;
			}
		}
	return n_;
}

void put2(int i, int x) {
	st2[i] += x;
	if (i < n_)
		lz2[i] += x;
}

void pus2(int i) {
	if (lz2[i])
		put2(i << 1 | 0, lz2[i]), put2(i << 1 | 1, lz2[i]), lz2[i] = 0;
}

void pul2(int i) {
	if (!lz2[i]) {
		int l = i << 1, r = l | 1;

		if (st2[l] < st2[r])
			st2[i] = st2[l], kk2[i] = kk2[l];
		else if (st2[l] > st2[r])
			st2[i] = st2[r], kk2[i] = kk2[r];
		else
			st2[i] = st2[l], kk2[i] = kk2[l] + kk2[r];
	}
}

void push2(int i) {
	int h;

	for (h = h_; h > 0; h--)
		pus2(i >> h);
}

void pull2(int i) {
	while (i > 1)
		pul2(i >>= 1);
}

void update2(int l, int r, int x) {
	int l_ = l += n_, r_ = r += n_;

	push2(l_), push2(r_);
	for ( ; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			put2(l++, x);
		if ((r & 1) == 0)
			put2(r--, x);
	}
	pull2(l_), pull2(r_);
}

int query2(int l, int r) {
	int x = INF, k = 0;

	push2(l += n_), push2(r += n_);
	for ( ; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1) {
			if (x > st2[l])
				x = st2[l], k = 0;
			if (x == st2[l])
				k += kk2[l];
			l++;
		}
		if ((r & 1) == 0) {
			if (x > st2[r])
				x = st2[r], k = 0;
			if (x == st2[r])
				k += kk2[r];
			r--;
		}
	}
	return x == 0 ? k : 0;
}

void upd(int l, int r, int i, int x) {
	int j;

	j = max(queryl1(i - 1, aa[i]), l - 1);
	if (j < l || aa[j] > aa[i])
		update2(j + 1, i - 1, x);
	j = min(queryr1(i + 1, aa[i]), r + 1);
	if (j > r || aa[j] >= aa[i])
		update2(i + 1, j - 1, x);
}

int main() {
	int n, q, i, j;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]);
	build(aa, n);
	scanf("%d", &q);
	for (i = 0; i < n; i++)
		upd(0, n - 1, i, 1);
	while (q--) {
		static char used[N];
		static int qu[N];
		int t, a, l, r, lg, cnt, h;

		scanf("%d", &t);
		if (t == 1) {
			scanf("%d%d", &i, &a), i--;
			cnt = 0;
			qu[cnt++] = i;
			for (lg = 0; lg <= LG; lg++) {
				j = queryl1(i - 1, 1 << lg);
				if (j >= 0 && !used[j])
					used[j] = 1, qu[cnt++] = j;
				j = queryr1(i + 1, 1 << lg);
				if (j < n && !used[j])
					used[j] = 1, qu[cnt++] = j;
			}
			for (h = 0; h < cnt; h++)
				upd(0, n - 1, qu[h], -1);
			aa[i] = a, update1(i, a);
			for (h = 0; h < cnt; h++)
				upd(0, n - 1, qu[h], 1);
			for (h = 0; h < cnt; h++)
				used[qu[h]] = 0;
		} else {
			scanf("%d%d", &l, &r), l--, r--;
			cnt = 0;
			for (lg = 0; lg <= LG; lg++) {
				j = queryl1(l - 1, 1 << lg);
				if (j >= 0 && !used[j])
					used[j] = 1, qu[cnt++] = j;
				j = queryr1(l, 1 << lg);
				if (j < n && !used[j])
					used[j] = 1, qu[cnt++] = j;
				j = queryl1(r, 1 << lg);
				if (j >= 0 && !used[j])
					used[j] = 1, qu[cnt++] = j;
				j = queryr1(r + 1, 1 << lg);
				if (j < n && !used[j])
					used[j] = 1, qu[cnt++] = j;
			}
			for (h = 0; h < cnt; h++) {
				upd(0, n - 1, qu[h], -1);
				if (l <= qu[h] && qu[h] <= r)
					upd(l, r, qu[h], 1);
			}
			printf("%d\n", query2(l, r));
			for (h = 0; h < cnt; h++) {
				if (l <= qu[h] && qu[h] <= r)
					upd(l, r, qu[h], -1);
				upd(0, n - 1, qu[h], 1);
			}
			for (h = 0; h < cnt; h++)
				used[qu[h]] = 0;
		}
	}
	return 0;
}

Compilation message

fish2.c: In function 'main':
fish2.c:162:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  162 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
fish2.c:164:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  164 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
fish2.c:166:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  166 |  scanf("%d", &q);
      |  ^~~~~~~~~~~~~~~
fish2.c:174:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  174 |   scanf("%d", &t);
      |   ^~~~~~~~~~~~~~~
fish2.c:176:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  176 |    scanf("%d%d", &i, &a), i--;
      |    ^~~~~~~~~~~~~~~~~~~~~
fish2.c:195:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  195 |    scanf("%d%d", &l, &r), l--, r--;
      |    ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 11 ms 212 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 66 ms 3452 KB Output is correct
3 Correct 66 ms 3532 KB Output is correct
4 Correct 66 ms 3556 KB Output is correct
5 Correct 68 ms 3536 KB Output is correct
6 Correct 54 ms 3460 KB Output is correct
7 Correct 47 ms 3516 KB Output is correct
8 Correct 50 ms 3480 KB Output is correct
9 Correct 44 ms 3544 KB Output is correct
10 Correct 58 ms 3472 KB Output is correct
11 Correct 51 ms 3520 KB Output is correct
12 Correct 50 ms 3496 KB Output is correct
13 Correct 46 ms 3556 KB Output is correct
14 Correct 56 ms 3504 KB Output is correct
15 Correct 55 ms 3452 KB Output is correct

Subtask #3
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 11 ms 212 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 66 ms 3452 KB Output is correct
3 Correct 66 ms 3532 KB Output is correct
4 Correct 66 ms 3556 KB Output is correct
5 Correct 68 ms 3536 KB Output is correct
6 Correct 54 ms 3460 KB Output is correct
7 Correct 47 ms 3516 KB Output is correct
8 Correct 50 ms 3480 KB Output is correct
9 Correct 44 ms 3544 KB Output is correct
10 Correct 58 ms 3472 KB Output is correct
11 Correct 51 ms 3520 KB Output is correct
12 Correct 50 ms 3496 KB Output is correct
13 Correct 46 ms 3556 KB Output is correct
14 Correct 56 ms 3504 KB Output is correct
15 Correct 55 ms 3452 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Execution timed out 4037 ms 4072 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 66 ms 3452 KB Output is correct
3 Correct 66 ms 3532 KB Output is correct
4 Correct 66 ms 3556 KB Output is correct
5 Correct 68 ms 3536 KB Output is correct
6 Correct 54 ms 3460 KB Output is correct
7 Correct 47 ms 3516 KB Output is correct
8 Correct 50 ms 3480 KB Output is correct
9 Correct 44 ms 3544 KB Output is correct
10 Correct 58 ms 3472 KB Output is correct
11 Correct 51 ms 3520 KB Output is correct
12 Correct 50 ms 3496 KB Output is correct
13 Correct 46 ms 3556 KB Output is correct
14 Correct 56 ms 3504 KB Output is correct
15 Correct 55 ms 3452 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Execution timed out 4053 ms 3912 KB Time limit exceeded
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 11 ms 212 KB Output isn't correct
6 Halted 0 ms 0 KB -