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Submission #528293

# Submission time Handle Problem Language Result Execution time Memory
528293 2022-02-19T20:11:48 Z rainboy Izbori (COCI22_izbori) C
110 / 110
 780 ms 13632 KB 
#include <stdio.h>
#include <string.h>

#define N	200000
#define N_	(1 << 19)	/* N_ = pow2(ceil(log2(N * 2 + 5))) */

unsigned int X = 12345;

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

int aa[N], ii[N];

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 = aa[ii[j]] != aa[i_] ? aa[ii[j]] - aa[i_] : 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;
	}
}

long long st1[N_ * 2], st2[N_ * 2]; int sz[N_ * 2], lz[N_], h_, n_;

void build(int n) {
	int i;

	h_ = 0;
	while (1 << h_ <= n)
		h_++;
	n_ = 1 << h_;
	for (i = 0; i < n_; i++)
		sz[n_ + i] = 1;
	for (i = n_ - 1; i > 0; i--)
		sz[i] = sz[i << 1 | 0] + sz[i << 1 | 1];
}

void put(int i, int x) {
	st1[i] += (long long) x * sz[i], st2[i] += (long long) x * sz[i] * (sz[i] + 1) / 2;
	if (i < n_)
		lz[i] += x;
}

void pus(int i) {
	if (lz[i])
		put(i << 1 | 0, lz[i]), put(i << 1 | 1, lz[i]), lz[i] = 0;
}

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

		st1[i] = st1[l] + st1[r], st2[i] = st2[l] + st1[l] * sz[r] + st2[r];
	}
}

void push(int i) {
	int h;

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

void pull(int i) {
	while (i > 1)
		pul(i >>= 1);
}

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

	push(l_), push(r_);
	for ( ; l <= r; l >>= 1, r >>= 1) {
		if ((l & 1) == 1)
			put(l++, x);
		if ((r & 1) == 0)
			put(r--, x);
	}
	pull(l_), pull(r_);
}

long long query(int r) {
	int l, s;
	long long x;

	l = 0;
	push(l += n_), push(r += n_);
	x = 0, s = 0;
	for (; l <= r; l >>= 1, r >>= 1)
		if ((r & 1) == 0)
			x += st2[r] + st1[r] * s, s += sz[r], r--;
	return x;
}

int main() {
	int n, h, i, i_, j, j_, k, d;
	long long ans;

	scanf("%d", &n);
	for (i = 0; i < n; i++) {
		scanf("%d", &aa[i]);
		ii[i] = i;
	}
	sort(ii, 0, n);
	ans = 0;
	build(n * 2 + 4);
	for (i = 0; i < n; i = j) {
		j = i + 1;
		while (j < n && aa[ii[j]] == aa[ii[i]])
			j++;
		d = n + 2;
		update(d, d, 1);
		for (i_ = -1, h = i; h <= j; h++) {
			j_ = h == j ? n : ii[h], k = j_ - i_ - 1;
			if (k > 0) {
				ans += query(d - 2) - query(d - k - 2);
				update(d - k, d - 1, 1);
				d -= k;
			}
			if (h < j) {
				d++;
				ans += query(d - 1) - query(d - 2);
				update(d, d, 1);
				i_ = ii[h];
			}
		}
		d = n + 2, update(d, d, -1);
		for (i_ = -1, h = i; h <= j; h++) {
			j_ = h == j ? n : ii[h], k = j_ - i_ - 1;
			if (k > 0) {
				update(d - k, d - 1, -1);
				d -= k;
			}
			if (h < j) {
				d++;
				update(d, d, -1);
				i_ = ii[h];
			}
		}
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:113:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  113 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:115:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 2 ms 440 KB Output is correct
10 Correct 3 ms 460 KB Output is correct
11 Correct 3 ms 460 KB Output is correct
12 Correct 3 ms 460 KB Output is correct
13 Correct 3 ms 460 KB Output is correct
14 Correct 3 ms 460 KB Output is correct
15 Correct 3 ms 460 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 2 ms 460 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 190 ms 5604 KB Output is correct
2 Correct 201 ms 5912 KB Output is correct
3 Correct 110 ms 3264 KB Output is correct
4 Correct 229 ms 5948 KB Output is correct
5 Correct 225 ms 5956 KB Output is correct
6 Correct 234 ms 6088 KB Output is correct
7 Correct 226 ms 6084 KB Output is correct
8 Correct 240 ms 6144 KB Output is correct
9 Correct 232 ms 6084 KB Output is correct
10 Correct 228 ms 6312 KB Output is correct
11 Correct 170 ms 12300 KB Output is correct

Subtask #4
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 2 ms 440 KB Output is correct
10 Correct 3 ms 460 KB Output is correct
11 Correct 3 ms 460 KB Output is correct
12 Correct 3 ms 460 KB Output is correct
13 Correct 3 ms 460 KB Output is correct
14 Correct 3 ms 460 KB Output is correct
15 Correct 3 ms 460 KB Output is correct
16 Correct 3 ms 460 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 190 ms 5604 KB Output is correct
19 Correct 201 ms 5912 KB Output is correct
20 Correct 110 ms 3264 KB Output is correct
21 Correct 229 ms 5948 KB Output is correct
22 Correct 225 ms 5956 KB Output is correct
23 Correct 234 ms 6088 KB Output is correct
24 Correct 226 ms 6084 KB Output is correct
25 Correct 240 ms 6144 KB Output is correct
26 Correct 232 ms 6084 KB Output is correct
27 Correct 228 ms 6312 KB Output is correct
28 Correct 170 ms 12300 KB Output is correct
29 Correct 177 ms 12212 KB Output is correct
30 Correct 137 ms 3280 KB Output is correct
31 Correct 291 ms 5884 KB Output is correct
32 Correct 780 ms 13632 KB Output is correct
33 Correct 328 ms 6424 KB Output is correct
34 Correct 348 ms 6616 KB Output is correct
35 Correct 200 ms 3908 KB Output is correct
36 Correct 117 ms 3044 KB Output is correct
37 Correct 140 ms 3384 KB Output is correct
38 Correct 306 ms 10668 KB Output is correct
39 Correct 283 ms 10572 KB Output is correct
40 Correct 308 ms 10660 KB Output is correct
41 Correct 288 ms 10692 KB Output is correct
42 Correct 286 ms 10616 KB Output is correct
43 Correct 355 ms 13536 KB Output is correct
44 Correct 327 ms 13476 KB Output is correct
45 Correct 347 ms 12140 KB Output is correct
46 Correct 328 ms 11848 KB Output is correct
47 Correct 332 ms 11844 KB Output is correct
48 Correct 419 ms 12972 KB Output is correct
49 Correct 391 ms 13124 KB Output is correct
50 Correct 403 ms 12868 KB Output is correct
51 Correct 395 ms 12956 KB Output is correct
52 Correct 385 ms 13056 KB Output is correct
53 Correct 399 ms 12976 KB Output is correct
54 Correct 370 ms 13032 KB Output is correct