Submission #110511

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
110511	2019-05-11T05:06:56 Z	AngusRitossa	Lamps (JOI19_lamps)	C++14	47 / 100	1000 ms	102008 KB

lamp

#include <bits/stdc++.h>
using namespace std;
int memo[1000010][2], done[1000010][2], a[1000010], b[1000010], n;
int dp(int i, int t)
{
	if (i == n) return 0;
	if (done[i][t]) return memo[i][t];
	done[i][t] = 1;
	if (a[i] == (b[i]^t)) return memo[i][t] = dp(i+1, t);
	int ans = dp(i+1, !t) + !t; // Remove/add a toggle, therefore curr is correct
	int extracost = 1, isok = 1, istoggled = t;
	for (int j = i; j < n; j++)
	{
		if ((b[j] == b[i]) != isok)
		{
			isok = !isok;
			istoggled = !istoggled;
			if (istoggled) extracost++;
		}
		int am = dp(j+1, istoggled)+extracost;
		ans = min(ans, am);
	}
	return memo[i][t] = ans;
}
int main()
{
	scanf("%d", &n);
	for (int i = 0; i < n; i++) 
	{
		char c;
		scanf(" %c", &c);
		a[i] = c-'0';
	}
	for (int i = 0; i < n; i++) 
	{
		char c;
		scanf(" %c", &c);
		b[i] = c-'0';
	}
	int ans = dp(0, 0);
	printf("%d\n", ans);
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:27:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
lamp.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &c);
   ~~~~~^~~~~~~~~~~
lamp.cpp:37:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &c);
   ~~~~~^~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	384 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	3 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	3 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct

Subtask #2
41.0 / 41.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	384 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	3 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	3 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	13 ms	512 KB	Output is correct
36	Correct	14 ms	512 KB	Output is correct
37	Correct	17 ms	512 KB	Output is correct
38	Correct	24 ms	512 KB	Output is correct
39	Correct	17 ms	512 KB	Output is correct
40	Correct	19 ms	640 KB	Output is correct
41	Correct	19 ms	512 KB	Output is correct
42	Correct	17 ms	512 KB	Output is correct
43	Correct	18 ms	512 KB	Output is correct
44	Correct	20 ms	512 KB	Output is correct
45	Correct	18 ms	512 KB	Output is correct
46	Correct	17 ms	640 KB	Output is correct
47	Correct	22 ms	512 KB	Output is correct
48	Correct	26 ms	512 KB	Output is correct
49	Correct	27 ms	512 KB	Output is correct
50	Correct	32 ms	616 KB	Output is correct
51	Correct	24 ms	512 KB	Output is correct
52	Correct	25 ms	640 KB	Output is correct
53	Correct	24 ms	512 KB	Output is correct
54	Correct	24 ms	512 KB	Output is correct
55	Correct	25 ms	512 KB	Output is correct
56	Correct	24 ms	512 KB	Output is correct
57	Correct	28 ms	512 KB	Output is correct
58	Correct	25 ms	556 KB	Output is correct

Subtask #3
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	23 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	2 ms	384 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	201 ms	102008 KB	Output is correct
8	Execution timed out	1078 ms	94584 KB	Time limit exceeded
9	Halted	0 ms	0 KB	-

Subtask #4
0 / 49.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	384 KB	Output is correct
2	Correct	2 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	384 KB	Output is correct
5	Correct	2 ms	384 KB	Output is correct
6	Correct	2 ms	384 KB	Output is correct
7	Correct	2 ms	384 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	384 KB	Output is correct
10	Correct	2 ms	384 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	3 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	2 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	2 ms	384 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	3 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	13 ms	512 KB	Output is correct
36	Correct	14 ms	512 KB	Output is correct
37	Correct	17 ms	512 KB	Output is correct
38	Correct	24 ms	512 KB	Output is correct
39	Correct	17 ms	512 KB	Output is correct
40	Correct	19 ms	640 KB	Output is correct
41	Correct	19 ms	512 KB	Output is correct
42	Correct	17 ms	512 KB	Output is correct
43	Correct	18 ms	512 KB	Output is correct
44	Correct	20 ms	512 KB	Output is correct
45	Correct	18 ms	512 KB	Output is correct
46	Correct	17 ms	640 KB	Output is correct
47	Correct	22 ms	512 KB	Output is correct
48	Correct	26 ms	512 KB	Output is correct
49	Correct	27 ms	512 KB	Output is correct
50	Correct	32 ms	616 KB	Output is correct
51	Correct	24 ms	512 KB	Output is correct
52	Correct	25 ms	640 KB	Output is correct
53	Correct	24 ms	512 KB	Output is correct
54	Correct	24 ms	512 KB	Output is correct
55	Correct	25 ms	512 KB	Output is correct
56	Correct	24 ms	512 KB	Output is correct
57	Correct	28 ms	512 KB	Output is correct
58	Correct	25 ms	556 KB	Output is correct
59	Correct	23 ms	384 KB	Output is correct
60	Correct	2 ms	384 KB	Output is correct
61	Correct	2 ms	384 KB	Output is correct
62	Correct	2 ms	384 KB	Output is correct
63	Correct	2 ms	384 KB	Output is correct
64	Correct	2 ms	384 KB	Output is correct
65	Correct	201 ms	102008 KB	Output is correct
66	Execution timed out	1078 ms	94584 KB	Time limit exceeded
67	Halted	0 ms	0 KB	-

Submission #110511

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 0 / 4.0

Subtask #4 0 / 49.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
0 / 4.0

Subtask #4
0 / 49.0