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답안 #740610

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
740610 2023-05-12T19:29:33 Z rainboy Exercise Deadlines (CCO20_day1problem2) C
25 / 25
 58 ms 4228 KB 
#include <stdio.h>

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

int st[N_ * 2], n_;

void build(int n) {
	int i;

	n_ = 1;
	while (n_ <= n)
		n_ <<= 1;
	for (i = 0; i < n; i++)
		st[n_ + i] = 1;
	for (i = n_ - 1; i > 0; i--)
		st[i] = st[i << 1 | 0] + st[i << 1 | 1];
}

void update(int i) {
	for (i += n_; i > 0; i >>= 1)
		st[i]--;
}

int query(int l) {
	int r = n_ - 1, x = 0;

	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
		if ((l & 1) == 1)
			x += st[l++];
	return x;
}

int prev(int r) {
	int l = 0;

	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
		if ((r & 1) == 0) {
			if (st[r]) {
				while (r < n_)
					r = st[r << 1 | 1] ? r << 1 | 1 : r << 1 | 0;
				return r - n_;
			}
			r--;
		}
	return -1;
}

int main() {
	static int dd[N];
	int n, i, d;
	long long ans;

	scanf("%d", &n);
	for (i = 0; i < n; i++)
		scanf("%d", &dd[i]), dd[i]--;
	build(n);
	ans = 0;
	for (i = n - 1; i >= 0; i--) {
		if ((d = prev(dd[i])) == -1) {
			printf("-1\n");
			return 0;
		}
		ans += query(d + 1);
		update(d);
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:54:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
Main.c:56:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |   scanf("%d", &dd[i]), dd[i]--;
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 304 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 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 2 ms 308 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 304 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 388 KB Output is correct
35 Correct 1 ms 340 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 1 ms 308 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 304 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 292 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 308 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 304 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 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 2 ms 308 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 304 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 388 KB Output is correct
35 Correct 1 ms 340 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 1 ms 308 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 304 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 292 KB Output is correct
46 Correct 54 ms 4196 KB Output is correct
47 Correct 54 ms 4172 KB Output is correct
48 Correct 57 ms 4196 KB Output is correct
49 Correct 55 ms 4200 KB Output is correct
50 Correct 51 ms 4096 KB Output is correct
51 Correct 49 ms 4196 KB Output is correct
52 Correct 43 ms 4048 KB Output is correct
53 Correct 43 ms 4028 KB Output is correct
54 Correct 38 ms 4044 KB Output is correct
55 Correct 33 ms 4044 KB Output is correct
56 Correct 36 ms 4016 KB Output is correct
57 Correct 36 ms 4076 KB Output is correct
58 Correct 50 ms 4116 KB Output is correct
59 Correct 46 ms 4052 KB Output is correct
60 Correct 45 ms 4112 KB Output is correct
61 Correct 41 ms 4116 KB Output is correct
62 Correct 35 ms 4116 KB Output is correct
63 Correct 41 ms 4116 KB Output is correct
64 Correct 47 ms 4044 KB Output is correct
65 Correct 51 ms 4116 KB Output is correct
66 Correct 45 ms 4116 KB Output is correct
67 Correct 43 ms 4116 KB Output is correct
68 Correct 43 ms 4044 KB Output is correct
69 Correct 47 ms 4112 KB Output is correct
70 Correct 51 ms 4152 KB Output is correct
71 Correct 51 ms 4128 KB Output is correct
72 Correct 51 ms 4060 KB Output is correct
73 Correct 53 ms 4132 KB Output is correct
74 Correct 39 ms 4064 KB Output is correct
75 Correct 47 ms 4156 KB Output is correct
76 Correct 54 ms 4180 KB Output is correct
77 Correct 48 ms 4172 KB Output is correct
78 Correct 32 ms 4124 KB Output is correct
79 Correct 33 ms 4024 KB Output is correct
80 Correct 58 ms 4132 KB Output is correct
81 Correct 51 ms 4228 KB Output is correct
82 Correct 35 ms 4120 KB Output is correct
83 Correct 35 ms 4120 KB Output is correct
84 Correct 51 ms 4172 KB Output is correct
85 Correct 51 ms 4180 KB Output is correct
86 Correct 51 ms 4112 KB Output is correct
87 Correct 53 ms 4140 KB Output is correct
88 Correct 52 ms 4176 KB Output is correct