Submission #488532

#	Time	Username	Problem	Language	Result	Execution time	Memory
488532		rainboy	Volontiranje (COCI21_volontiranje)	C11	10 / 110	16 ms	536 KiB

Main

#include <stdio.h>

#define N	15

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

int main() {
	static int pp[N], kk[1 << N], cc[1 << N];
	static char good[1 << N];
	int n, i, j, b, c, k_, l_;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &pp[i]), pp[i]--;
	for (b = 1; b < 1 << n; b++)
		kk[b] = kk[b & b - 1] + 1;
	k_ = 0, l_ = 0;
	for (b = 0; b < 1 << n; b++) {
		int incr;

		incr = 1;
		for (i = -1, j = 0; j < n; j++)
			if ((b & 1 << j) != 0) {
				if (i != -1 && pp[i] > pp[j]) {
					incr = 0;
					break;
				}
				i = j;
			}
		if (incr)
			good[b] = 1, k_ = max(k_, kk[b]);
	}
	for (b = 0; b < 1 << n; b++)
		if (good[b] && kk[b] != k_)
			good[b] = 0;
	cc[0] = -1;
	for (b = 0; b < 1 << n; b++) {
		c = 0;
		while (c = c - b & b)
			if (good[c] && cc[b ^ c]) {
				cc[b] = c;
				break;
			}
		if (cc[b])
			l_ = max(l_, kk[b] / k_);
	}
	printf("%d %d\n", l_, k_);
	for (b = 0; b < 1 << n; b++)
		if (cc[b] && kk[b] == l_ * k_) {
			while (b) {
				for (i = 0; i < n; i++)
					if ((cc[b] & 1 << i) != 0)
						printf("%d ", i + 1);
				printf("\n");
				b ^= cc[b];
			}
			return 0;
		}
	return 0;
}

Compilation message (stderr)

Main.c: In function 'main':
Main.c:16:20: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   16 |   kk[b] = kk[b & b - 1] + 1;
      |                  ~~^~~
Main.c:39:16: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   39 |   while (c = c - b & b)
      |              ~~^~~
Main.c:39:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   39 |   while (c = c - b & b)
      |          ^
Main.c:12:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%d", &pp[i]), pp[i]--;
      |   ^~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 60