oj.uz

Submission #488526

# Submission time Handle Problem Language Result Execution time Memory
488526 2021-11-19T13:19:58 Z rainboy Set (COCI21_set) C
40 / 110
 195 ms 332 KB 
#include <stdio.h>

#define K	7
#define A	2187

int sub(int a, int b) {
	return b == 0 ? a : sub(a / 3, b / 3) * 3 + (a % 3 - b % 3 + 3) % 3;
}

int main() {
	static int cnt[A];
	int n, k, i, a, b;
	long long ans;

	scanf("%d%d", &n, &k);
	for (i = 0; i < n; i++) {
		static char cc[K + 1];
		int h;

		scanf("%s", cc);
		a = 0;
		for (h = 0; h < k; h++)
			a = a * 3 + (cc[h] - '1');
		cnt[a]++;
	}
	ans = 0;
	for (a = 0; a < A; a++)
		for (b = 0; b < A; b++)
			ans += (long long) cnt[a] * cnt[b] * cnt[sub(sub(0, a), b)];
	for (a = 0; a < A; a++) {
		ans -= (long long) cnt[a] * cnt[a] * cnt[a];
		ans += (long long) cnt[a] * (cnt[a] - 1) * (cnt[a] - 2);
	}
	ans /= 6;
	printf("%lld\n", ans);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:15:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:20:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%s", cc);
      |   ^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 264 KB Output is correct
2 Correct 174 ms 256 KB Output is correct
3 Correct 166 ms 204 KB Output is correct
4 Correct 182 ms 204 KB Output is correct
5 Correct 173 ms 204 KB Output is correct
6 Correct 167 ms 252 KB Output is correct
7 Correct 188 ms 252 KB Output is correct
8 Correct 171 ms 252 KB Output is correct
9 Correct 170 ms 252 KB Output is correct
10 Correct 180 ms 252 KB Output is correct
11 Correct 170 ms 256 KB Output is correct
12 Correct 174 ms 252 KB Output is correct
13 Correct 195 ms 252 KB Output is correct
14 Correct 169 ms 256 KB Output is correct
15 Correct 171 ms 256 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 264 KB Output is correct
2 Correct 174 ms 256 KB Output is correct
3 Correct 166 ms 204 KB Output is correct
4 Correct 182 ms 204 KB Output is correct
5 Correct 173 ms 204 KB Output is correct
6 Correct 167 ms 252 KB Output is correct
7 Correct 188 ms 252 KB Output is correct
8 Correct 171 ms 252 KB Output is correct
9 Correct 170 ms 252 KB Output is correct
10 Correct 180 ms 252 KB Output is correct
11 Correct 170 ms 256 KB Output is correct
12 Correct 174 ms 252 KB Output is correct
13 Correct 195 ms 252 KB Output is correct
14 Correct 169 ms 256 KB Output is correct
15 Correct 171 ms 256 KB Output is correct
16 Correct 186 ms 268 KB Output is correct
17 Correct 168 ms 332 KB Output is correct
18 Correct 172 ms 260 KB Output is correct
19 Correct 183 ms 292 KB Output is correct
20 Correct 183 ms 204 KB Output is correct
21 Correct 167 ms 256 KB Output is correct
22 Correct 173 ms 264 KB Output is correct
23 Correct 175 ms 288 KB Output is correct
24 Correct 177 ms 324 KB Output is correct
25 Correct 185 ms 276 KB Output is correct
26 Correct 169 ms 260 KB Output is correct
27 Correct 182 ms 276 KB Output is correct
28 Correct 184 ms 272 KB Output is correct
29 Correct 169 ms 260 KB Output is correct
30 Correct 173 ms 204 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 264 KB Output is correct
2 Correct 174 ms 256 KB Output is correct
3 Correct 166 ms 204 KB Output is correct
4 Correct 182 ms 204 KB Output is correct
5 Correct 173 ms 204 KB Output is correct
6 Correct 167 ms 252 KB Output is correct
7 Correct 188 ms 252 KB Output is correct
8 Correct 171 ms 252 KB Output is correct
9 Correct 170 ms 252 KB Output is correct
10 Correct 180 ms 252 KB Output is correct
11 Correct 170 ms 256 KB Output is correct
12 Correct 174 ms 252 KB Output is correct
13 Correct 195 ms 252 KB Output is correct
14 Correct 169 ms 256 KB Output is correct
15 Correct 171 ms 256 KB Output is correct
16 Correct 186 ms 268 KB Output is correct
17 Correct 168 ms 332 KB Output is correct
18 Correct 172 ms 260 KB Output is correct
19 Correct 183 ms 292 KB Output is correct
20 Correct 183 ms 204 KB Output is correct
21 Correct 167 ms 256 KB Output is correct
22 Correct 173 ms 264 KB Output is correct
23 Correct 175 ms 288 KB Output is correct
24 Correct 177 ms 324 KB Output is correct
25 Correct 185 ms 276 KB Output is correct
26 Correct 169 ms 260 KB Output is correct
27 Correct 182 ms 276 KB Output is correct
28 Correct 184 ms 272 KB Output is correct
29 Correct 169 ms 260 KB Output is correct
30 Correct 173 ms 204 KB Output is correct
31 Runtime error 1 ms 332 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -