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Submission #823946

# Submission time Handle Problem Language Result Execution time Memory
823946 2023-08-13T10:34:49 Z rainboy Triangle Collection (CCO23_day2problem3) C
25 / 25
 192 ms 16680 KB 
#include <stdio.h>

#define N	200000
#define N_	(1 << 18)	/* N_ = pow2(ceil(log2(N))) */

long long min(long long a, long long b) { return a < b ? a : b; }

long long ss[N_ * 2], qq[N_ * 2]; int n_;

void pul(int i) {
	int l = i << 1, r = l | 1;

	ss[i] = ss[l] + ss[r];
	qq[i] = min(qq[l] + ss[r], qq[r]);
}

void build(int *aa, int n) {
	int i;

	n_ = 1;
	while (n_ < n)
		n_ <<= 1;
	for (i = 0; i < n; i++) {
		ss[n_ + i] += aa[i] / 2;
		if (aa[i] % 2 != 0)
			ss[n_ + (i + 1) / 2]--;
	}
	for (i = 0; i < n_; i++)
		qq[n_ + i] = min(ss[n_ + i], 0);
	for (i = n_ - 1; i > 0; i--)
		pul(i);
}

void update(int i, int x) {
	i += n_;
	qq[i] = min(ss[i] += x, 0);
	while (i > 1)
		pul(i >>= 1);
}

int main() {
	static int aa[N];
	int n, q, i, d;
	long long sum;

	scanf("%d%d", &n, &q);
	sum = 0;
	for (i = 0; i < n; i++) {
		scanf("%d", &aa[i]);
		sum += aa[i];
	}
	build(aa, n);
	while (q--) {
		scanf("%d%d", &i, &d), i--;
		update(i, -(aa[i] / 2));
		if (aa[i] % 2 != 0)
			update((i + 1) / 2, 1);
		aa[i] += d, sum += d;
		update(i, aa[i] / 2);
		if (aa[i] % 2 != 0)
			update((i + 1) / 2, -1);
		printf("%lld\n", (sum + qq[1]) / 3);
	}
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:46:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:49:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
Main.c:54:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d%d", &i, &d), i--;
      |   ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 292 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 292 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 0 ms 292 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 212 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 50 ms 1356 KB Output is correct
4 Correct 140 ms 11880 KB Output is correct
5 Correct 120 ms 11980 KB Output is correct
6 Correct 129 ms 11952 KB Output is correct
7 Correct 131 ms 11928 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 138 ms 12140 KB Output is correct
6 Correct 143 ms 15032 KB Output is correct
7 Correct 169 ms 14724 KB Output is correct
8 Correct 134 ms 15096 KB Output is correct
9 Correct 134 ms 15192 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 292 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 292 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 304 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 0 ms 292 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 50 ms 1356 KB Output is correct
32 Correct 140 ms 11880 KB Output is correct
33 Correct 120 ms 11980 KB Output is correct
34 Correct 129 ms 11952 KB Output is correct
35 Correct 131 ms 11928 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 138 ms 12140 KB Output is correct
41 Correct 143 ms 15032 KB Output is correct
42 Correct 169 ms 14724 KB Output is correct
43 Correct 134 ms 15096 KB Output is correct
44 Correct 134 ms 15192 KB Output is correct
45 Correct 192 ms 15668 KB Output is correct
46 Correct 143 ms 15420 KB Output is correct
47 Correct 153 ms 15760 KB Output is correct
48 Correct 143 ms 11884 KB Output is correct
49 Correct 119 ms 15180 KB Output is correct
50 Correct 129 ms 13880 KB Output is correct
51 Correct 116 ms 14068 KB Output is correct
52 Correct 142 ms 16680 KB Output is correct
53 Correct 118 ms 13288 KB Output is correct
54 Correct 138 ms 12912 KB Output is correct