oj.uz

Submission #528259

# Submission time Handle Problem Language Result Execution time Memory
528259 2022-02-19T18:30:35 Z rainboy Izbori (COCI22_izbori) C
40 / 110
 1034 ms 2604 KB 
#include <stdio.h>

#define N	200000
#define SMALL	2000

int main() {
	static int aa[N], kk[N + 1], cc[N * 2 + 1];
	int n, i, l, r, a, k, k_;
	long long cnt;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &aa[i]);
	if (n <= SMALL) {
		cnt = 0;
		for (l = 0; l < n; l++) {
			a = 0, k = 0;
			for (r = l; r < n; r++) {
				if (k == 0)
					a = aa[r], k++;
				else if (a == aa[r])
					k++;
				else
					k--;
				k_ = 0;
				for (i = l; i <= r; i++)
					if (aa[i] == a)
						k_++;
					else
						k_--;
				if (k_ > 0)
					cnt++;
			}
		}
	} else {
		k = 0;
		for (i = 0; i < n; i++)
			kk[i + 1] = kk[i] + (aa[i] == 1 ? 1 : -1);
		for (i = 0; i <= n; i++)
			cc[n + kk[i]]++;
		cnt = (long long) n * (n + 1) / 2;
		for (k = -n; k <= n; k++)
			cnt -= (long long) cc[n + k] * (cc[n + k] - 1) / 2;
	}
	printf("%lld\n", cnt);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:11:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:13:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 4 ms 284 KB Output is correct
4 Correct 4 ms 204 KB Output is correct
5 Correct 4 ms 204 KB Output is correct
6 Correct 4 ms 284 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 4 ms 284 KB Output is correct
4 Correct 4 ms 204 KB Output is correct
5 Correct 4 ms 204 KB Output is correct
6 Correct 4 ms 284 KB Output is correct
7 Correct 102 ms 272 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1012 ms 272 KB Output is correct
10 Correct 1034 ms 280 KB Output is correct
11 Correct 988 ms 292 KB Output is correct
12 Correct 1012 ms 276 KB Output is correct
13 Correct 1014 ms 280 KB Output is correct
14 Correct 990 ms 272 KB Output is correct
15 Correct 975 ms 204 KB Output is correct
16 Correct 969 ms 280 KB Output is correct
17 Correct 965 ms 280 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 1228 KB Output is correct
2 Correct 15 ms 1624 KB Output is correct
3 Correct 10 ms 1100 KB Output is correct
4 Correct 16 ms 1700 KB Output is correct
5 Correct 17 ms 1636 KB Output is correct
6 Correct 21 ms 1764 KB Output is correct
7 Correct 17 ms 1824 KB Output is correct
8 Correct 19 ms 1740 KB Output is correct
9 Correct 18 ms 1868 KB Output is correct
10 Correct 18 ms 1744 KB Output is correct
11 Correct 18 ms 2596 KB Output is correct

Subtask #4
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 4 ms 284 KB Output is correct
4 Correct 4 ms 204 KB Output is correct
5 Correct 4 ms 204 KB Output is correct
6 Correct 4 ms 284 KB Output is correct
7 Correct 102 ms 272 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1012 ms 272 KB Output is correct
10 Correct 1034 ms 280 KB Output is correct
11 Correct 988 ms 292 KB Output is correct
12 Correct 1012 ms 276 KB Output is correct
13 Correct 1014 ms 280 KB Output is correct
14 Correct 990 ms 272 KB Output is correct
15 Correct 975 ms 204 KB Output is correct
16 Correct 969 ms 280 KB Output is correct
17 Correct 965 ms 280 KB Output is correct
18 Correct 11 ms 1228 KB Output is correct
19 Correct 15 ms 1624 KB Output is correct
20 Correct 10 ms 1100 KB Output is correct
21 Correct 16 ms 1700 KB Output is correct
22 Correct 17 ms 1636 KB Output is correct
23 Correct 21 ms 1764 KB Output is correct
24 Correct 17 ms 1824 KB Output is correct
25 Correct 19 ms 1740 KB Output is correct
26 Correct 18 ms 1868 KB Output is correct
27 Correct 18 ms 1744 KB Output is correct
28 Correct 18 ms 2596 KB Output is correct
29 Correct 26 ms 2604 KB Output is correct
30 Incorrect 5 ms 912 KB Output isn't correct
31 Halted 0 ms 0 KB -