Submission #503358

#	Time	Username	Problem	Language	Result	Execution time	Memory
503358		rainboy	Akcija (COCI21_akcija)	C11	40 / 110	281 ms	14880 KiB

Main

#include <stdio.h>

#define N	2000
#define M	(1 << 20)

unsigned int X = 12345;

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

int cc[M];
long long ss[M];

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)
			if (cc[hh[j]] == cc[h] && ss[hh[j]] == ss[h])
				j++;
			else if (cc[hh[j]] > cc[h] || cc[hh[j]] == cc[h] && ss[hh[j]] < ss[h]) {
				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 main() {
	static int ww[N], qu[N][N], cnt[N], hh[M];
	static char available[N];
	int n, m, k, h, i, d, b, c, c_;
	long long s, s_;

	scanf("%d%d", &n, &k);
	for (i = 0; i < n; i++) {
		scanf("%d%d", &ww[i], &d), d--;
		qu[d][cnt[d]++] = i;
	}
	if (n <= 20) {
		m = 0;
		for (b = 0; b < 1 << n; b++) {
			c = s = 0;
			for (d = 0; d < n; d++)
				for (h = 0; h < cnt[d]; h++)
					if ((b & 1 << qu[d][h]) != 0) {
						c++, s += ww[qu[d][h]];
						if (c > d + 1) {
							c = -1;
							goto out;
						}
					}
out:
			if (c != -1)
				cc[m] = c, ss[m] = s, m++;
		}
		for (h = 0; h < m; h++)
			hh[h] = h;
		sort(hh, 0, m);
		for (h = 0; h < k; h++)
			printf("%d %lld\n", cc[hh[h]], ss[hh[h]]);
	} else {
		c_ = 0, s_ = 0;
		for (d = n - 1, c = 0; d >= 0; d--) {
			for (h = 0; h < cnt[d]; h++)
				available[qu[d][h]] = 1, c++;
			if (c > 0) {
				int i_;

				i_ = -1;
				for (i = 0; i < n; i++)
					if (available[i] && (i_ == -1 || ww[i_] > ww[i]))
						i_ = i;
				available[i_] = 0, c--;
				c_++, s_ += ww[i_];
			}
		}
		printf("%d %lld\n", c_, s_);
	}
	return 0;
}

Compilation message (stderr)

Main.c: In function 'sort':
Main.c:22:53: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   22 |    else if (cc[hh[j]] > cc[h] || cc[hh[j]] == cc[h] && ss[hh[j]] < ss[h]) {
      |                                  ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.c: In function 'main':
Main.c:40:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:42:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |   scanf("%d%d", &ww[i], &d), d--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 10 / 10
• Subtask 5: 0 / 30
• Subtask 6: 0 / 20