oj.uz

Submission #922616

# Submission time Handle Problem Language Result Execution time Memory
922616 2024-02-05T19:58:29 Z rainboy April Fools (LMIO17_faktai) C
100 / 100
 42 ms 9648 KB 
#include <stdio.h>

#define N	20

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

int cnt[1 << N];

void init() {
	int b;

	for (b = 1; b < 1 << N; b++)
		cnt[b] = cnt[b & b - 1] + 1;
}

int main() {
	static int ss[1 << N];
	static char bad[1 << N];
	int n, m, h, i, b, mn, mx;

	init();
	scanf("%d%d", &m, &n);
	for (h = 0; h < m; h++) {
		int k;

		scanf("%d", &k);
		b = 0;
		while (k--) {
			scanf("%d", &i), i--;
			b ^= 1 << i;
			ss[1 << i]++;
		}
		bad[(1 << n) - 1 ^ b] = 1;
	}
	for (b = 0; b < 1 << n; b++)
		ss[b] = ss[b & b - 1] + ss[b & -b];
	for (i = 0; i < n; i++)
		for (b = 0; b < 1 << n; b++)
			if ((b & 1 << i) == 0 && bad[b | 1 << i])
				bad[b] = 1;
	mn = n + 1, mx = -1;
	for (b = 0; b < 1 << n; b++)
		if (!bad[b] && ss[b] == m)
			mn = min(mn, cnt[b]), mx = max(mx, cnt[b]);
	printf("%d %d\n", mn, mx);
	return 0;
}

Compilation message

faktai.c: In function 'init':
faktai.c:14:22: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   14 |   cnt[b] = cnt[b & b - 1] + 1;
      |                    ~~^~~
faktai.c: In function 'main':
faktai.c:34:16: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   34 |   bad[(1 << n) - 1 ^ b] = 1;
      |       ~~~~~~~~~^~~
faktai.c:37:20: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   37 |   ss[b] = ss[b & b - 1] + ss[b & -b];
      |                  ~~^~~
faktai.c:23:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%d%d", &m, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~
faktai.c:27:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%d", &k);
      |   ^~~~~~~~~~~~~~~
faktai.c:30:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |    scanf("%d", &i), i--;
      |    ^~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5464 KB Output is correct
2 Correct 2 ms 5464 KB Output is correct
3 Correct 2 ms 5468 KB Output is correct
4 Correct 2 ms 5468 KB Output is correct
5 Correct 2 ms 5468 KB Output is correct
6 Correct 2 ms 5468 KB Output is correct
7 Correct 2 ms 5468 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5468 KB Output is correct
2 Correct 2 ms 5468 KB Output is correct
3 Correct 2 ms 5468 KB Output is correct
4 Correct 2 ms 5468 KB Output is correct
5 Correct 2 ms 5664 KB Output is correct
6 Correct 27 ms 9560 KB Output is correct
7 Correct 2 ms 5468 KB Output is correct
8 Correct 34 ms 9624 KB Output is correct
9 Correct 26 ms 9564 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5664 KB Output is correct
2 Correct 27 ms 9560 KB Output is correct
3 Correct 2 ms 5468 KB Output is correct
4 Correct 34 ms 9624 KB Output is correct
5 Correct 26 ms 9564 KB Output is correct
6 Correct 3 ms 5464 KB Output is correct
7 Correct 2 ms 5464 KB Output is correct
8 Correct 2 ms 5468 KB Output is correct
9 Correct 2 ms 5468 KB Output is correct
10 Correct 2 ms 5468 KB Output is correct
11 Correct 2 ms 5468 KB Output is correct
12 Correct 2 ms 5468 KB Output is correct
13 Correct 34 ms 9648 KB Output is correct
14 Correct 28 ms 9644 KB Output is correct
15 Correct 42 ms 9560 KB Output is correct
16 Correct 26 ms 9564 KB Output is correct
17 Correct 32 ms 9560 KB Output is correct
18 Correct 31 ms 9564 KB Output is correct
19 Correct 28 ms 9564 KB Output is correct