답안 #260391

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
260391	2020-08-10T08:13:51 Z	patrikpavic2	Lamps (JOI19_lamps)	C++17	100 / 100	591 ms	229372 KB

lamp

#include <cstdio>
#include <cstring>
#include <algorithm>

using namespace std;

const int N = 1e6 + 500;

int A[N], B[N], dp[N][2][8], n;

int f(int x, int inv, int msk){
	if(x == n) return 0;
	if(dp[x][inv][msk] != -1) return dp[x][inv][msk];
	int ret = N;
	if(msk & 1) 
		ret = min(ret, f(x, inv, msk - 1));
	if(msk & 2) 
		ret = min(ret, f(x, inv, msk - 2));
	if(msk & 4)
		 ret = min(ret, f(x, inv, msk - 4));
	if(msk == 4)
		ret = min(ret, f(x, inv, 1));
	int zlm = B[x] ^ inv, jos = 0, ol = msk;
	if(A[x] == 0 && zlm == 0){
		if(msk & 4) msk -= 4;
		if((msk & 3) == 1)
			msk = 0;
	}
	if(A[x] == 1 && zlm == 1){
		if((msk & 6) == 2)
			msk -= 2;
	}
	if(A[x] == 1 && zlm == 0){
		if(msk & 4) msk -= 4;
		if(!(msk & 2))
			msk += 2, jos++;
		
	}
	if(A[x] == 0 && zlm == 1){
		if(msk == 3)
			msk = 1;
		if(msk == 2)
			msk += 4, jos++;
		if(msk == 0)
			msk = 1, jos++;
	}
	ret = min(ret, jos + min(f(x + 1, inv, msk), f(x + 1, !inv, msk) + (!inv)));
	return dp[x][inv][ol] = ret;
}

int main(){
	memset(dp, -1, sizeof(dp));
	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';
	}
	printf("%d\n", min(f(0, 0, 0), 1 + f(0, 1, 0)));
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:53:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
lamp.cpp:55:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   char c; scanf(" %c", &c);
           ~~~~~^~~~~~~~~~~
lamp.cpp:59:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   char c; scanf(" %c", &c);
           ~~~~~^~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	62944 KB	Output is correct
2	Correct	32 ms	62968 KB	Output is correct
3	Correct	36 ms	62976 KB	Output is correct
4	Correct	31 ms	62968 KB	Output is correct
5	Correct	31 ms	62976 KB	Output is correct
6	Correct	32 ms	62968 KB	Output is correct
7	Correct	32 ms	62976 KB	Output is correct
8	Correct	32 ms	62976 KB	Output is correct
9	Correct	31 ms	62968 KB	Output is correct
10	Correct	31 ms	62984 KB	Output is correct
11	Correct	32 ms	62968 KB	Output is correct
12	Correct	36 ms	62968 KB	Output is correct
13	Correct	32 ms	62976 KB	Output is correct
14	Correct	34 ms	62976 KB	Output is correct
15	Correct	35 ms	62972 KB	Output is correct
16	Correct	31 ms	62976 KB	Output is correct
17	Correct	31 ms	62968 KB	Output is correct
18	Correct	37 ms	62976 KB	Output is correct
19	Correct	31 ms	62976 KB	Output is correct
20	Correct	30 ms	62968 KB	Output is correct
21	Correct	38 ms	62968 KB	Output is correct
22	Correct	33 ms	62952 KB	Output is correct
23	Correct	36 ms	63096 KB	Output is correct
24	Correct	30 ms	62976 KB	Output is correct
25	Correct	32 ms	62976 KB	Output is correct
26	Correct	33 ms	62968 KB	Output is correct
27	Correct	31 ms	62976 KB	Output is correct
28	Correct	31 ms	62976 KB	Output is correct
29	Correct	39 ms	62976 KB	Output is correct
30	Correct	41 ms	62968 KB	Output is correct
31	Correct	31 ms	62968 KB	Output is correct
32	Correct	37 ms	62968 KB	Output is correct
33	Correct	31 ms	62968 KB	Output is correct
34	Correct	33 ms	62968 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	62944 KB	Output is correct
2	Correct	32 ms	62968 KB	Output is correct
3	Correct	36 ms	62976 KB	Output is correct
4	Correct	31 ms	62968 KB	Output is correct
5	Correct	31 ms	62976 KB	Output is correct
6	Correct	32 ms	62968 KB	Output is correct
7	Correct	32 ms	62976 KB	Output is correct
8	Correct	32 ms	62976 KB	Output is correct
9	Correct	31 ms	62968 KB	Output is correct
10	Correct	31 ms	62984 KB	Output is correct
11	Correct	32 ms	62968 KB	Output is correct
12	Correct	36 ms	62968 KB	Output is correct
13	Correct	32 ms	62976 KB	Output is correct
14	Correct	34 ms	62976 KB	Output is correct
15	Correct	35 ms	62972 KB	Output is correct
16	Correct	31 ms	62976 KB	Output is correct
17	Correct	31 ms	62968 KB	Output is correct
18	Correct	37 ms	62976 KB	Output is correct
19	Correct	31 ms	62976 KB	Output is correct
20	Correct	30 ms	62968 KB	Output is correct
21	Correct	38 ms	62968 KB	Output is correct
22	Correct	33 ms	62952 KB	Output is correct
23	Correct	36 ms	63096 KB	Output is correct
24	Correct	30 ms	62976 KB	Output is correct
25	Correct	32 ms	62976 KB	Output is correct
26	Correct	33 ms	62968 KB	Output is correct
27	Correct	31 ms	62976 KB	Output is correct
28	Correct	31 ms	62976 KB	Output is correct
29	Correct	39 ms	62976 KB	Output is correct
30	Correct	41 ms	62968 KB	Output is correct
31	Correct	31 ms	62968 KB	Output is correct
32	Correct	37 ms	62968 KB	Output is correct
33	Correct	31 ms	62968 KB	Output is correct
34	Correct	33 ms	62968 KB	Output is correct
35	Correct	31 ms	63232 KB	Output is correct
36	Correct	37 ms	63224 KB	Output is correct
37	Correct	32 ms	63096 KB	Output is correct
38	Correct	35 ms	63096 KB	Output is correct
39	Correct	32 ms	63224 KB	Output is correct
40	Correct	38 ms	63224 KB	Output is correct
41	Correct	32 ms	63232 KB	Output is correct
42	Correct	37 ms	63224 KB	Output is correct
43	Correct	41 ms	63224 KB	Output is correct
44	Correct	36 ms	63224 KB	Output is correct
45	Correct	37 ms	63224 KB	Output is correct
46	Correct	39 ms	63224 KB	Output is correct
47	Correct	41 ms	63224 KB	Output is correct
48	Correct	37 ms	63228 KB	Output is correct
49	Correct	39 ms	63224 KB	Output is correct
50	Correct	36 ms	63224 KB	Output is correct
51	Correct	31 ms	63224 KB	Output is correct
52	Correct	38 ms	63224 KB	Output is correct
53	Correct	35 ms	63232 KB	Output is correct
54	Correct	36 ms	63224 KB	Output is correct
55	Correct	32 ms	63224 KB	Output is correct
56	Correct	32 ms	63224 KB	Output is correct
57	Correct	32 ms	63232 KB	Output is correct
58	Correct	32 ms	63224 KB	Output is correct

Subtask #3
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	37 ms	62972 KB	Output is correct
2	Correct	37 ms	62968 KB	Output is correct
3	Correct	33 ms	62908 KB	Output is correct
4	Correct	32 ms	62976 KB	Output is correct
5	Correct	38 ms	62968 KB	Output is correct
6	Correct	36 ms	62968 KB	Output is correct
7	Correct	270 ms	188152 KB	Output is correct
8	Correct	260 ms	148984 KB	Output is correct
9	Correct	285 ms	148984 KB	Output is correct
10	Correct	294 ms	227380 KB	Output is correct
11	Correct	313 ms	227260 KB	Output is correct
12	Correct	288 ms	188152 KB	Output is correct
13	Correct	277 ms	188240 KB	Output is correct
14	Correct	299 ms	188152 KB	Output is correct

Subtask #4
49.0 / 49.0

#	결과	실행 시간	메모리	Grader output
1	Correct	31 ms	62944 KB	Output is correct
2	Correct	32 ms	62968 KB	Output is correct
3	Correct	36 ms	62976 KB	Output is correct
4	Correct	31 ms	62968 KB	Output is correct
5	Correct	31 ms	62976 KB	Output is correct
6	Correct	32 ms	62968 KB	Output is correct
7	Correct	32 ms	62976 KB	Output is correct
8	Correct	32 ms	62976 KB	Output is correct
9	Correct	31 ms	62968 KB	Output is correct
10	Correct	31 ms	62984 KB	Output is correct
11	Correct	32 ms	62968 KB	Output is correct
12	Correct	36 ms	62968 KB	Output is correct
13	Correct	32 ms	62976 KB	Output is correct
14	Correct	34 ms	62976 KB	Output is correct
15	Correct	35 ms	62972 KB	Output is correct
16	Correct	31 ms	62976 KB	Output is correct
17	Correct	31 ms	62968 KB	Output is correct
18	Correct	37 ms	62976 KB	Output is correct
19	Correct	31 ms	62976 KB	Output is correct
20	Correct	30 ms	62968 KB	Output is correct
21	Correct	38 ms	62968 KB	Output is correct
22	Correct	33 ms	62952 KB	Output is correct
23	Correct	36 ms	63096 KB	Output is correct
24	Correct	30 ms	62976 KB	Output is correct
25	Correct	32 ms	62976 KB	Output is correct
26	Correct	33 ms	62968 KB	Output is correct
27	Correct	31 ms	62976 KB	Output is correct
28	Correct	31 ms	62976 KB	Output is correct
29	Correct	39 ms	62976 KB	Output is correct
30	Correct	41 ms	62968 KB	Output is correct
31	Correct	31 ms	62968 KB	Output is correct
32	Correct	37 ms	62968 KB	Output is correct
33	Correct	31 ms	62968 KB	Output is correct
34	Correct	33 ms	62968 KB	Output is correct
35	Correct	31 ms	63232 KB	Output is correct
36	Correct	37 ms	63224 KB	Output is correct
37	Correct	32 ms	63096 KB	Output is correct
38	Correct	35 ms	63096 KB	Output is correct
39	Correct	32 ms	63224 KB	Output is correct
40	Correct	38 ms	63224 KB	Output is correct
41	Correct	32 ms	63232 KB	Output is correct
42	Correct	37 ms	63224 KB	Output is correct
43	Correct	41 ms	63224 KB	Output is correct
44	Correct	36 ms	63224 KB	Output is correct
45	Correct	37 ms	63224 KB	Output is correct
46	Correct	39 ms	63224 KB	Output is correct
47	Correct	41 ms	63224 KB	Output is correct
48	Correct	37 ms	63228 KB	Output is correct
49	Correct	39 ms	63224 KB	Output is correct
50	Correct	36 ms	63224 KB	Output is correct
51	Correct	31 ms	63224 KB	Output is correct
52	Correct	38 ms	63224 KB	Output is correct
53	Correct	35 ms	63232 KB	Output is correct
54	Correct	36 ms	63224 KB	Output is correct
55	Correct	32 ms	63224 KB	Output is correct
56	Correct	32 ms	63224 KB	Output is correct
57	Correct	32 ms	63232 KB	Output is correct
58	Correct	32 ms	63224 KB	Output is correct
59	Correct	37 ms	62972 KB	Output is correct
60	Correct	37 ms	62968 KB	Output is correct
61	Correct	33 ms	62908 KB	Output is correct
62	Correct	32 ms	62976 KB	Output is correct
63	Correct	38 ms	62968 KB	Output is correct
64	Correct	36 ms	62968 KB	Output is correct
65	Correct	270 ms	188152 KB	Output is correct
66	Correct	260 ms	148984 KB	Output is correct
67	Correct	285 ms	148984 KB	Output is correct
68	Correct	294 ms	227380 KB	Output is correct
69	Correct	313 ms	227260 KB	Output is correct
70	Correct	288 ms	188152 KB	Output is correct
71	Correct	277 ms	188240 KB	Output is correct
72	Correct	299 ms	188152 KB	Output is correct
73	Correct	402 ms	150976 KB	Output is correct
74	Correct	422 ms	190200 KB	Output is correct
75	Correct	417 ms	190200 KB	Output is correct
76	Correct	417 ms	190176 KB	Output is correct
77	Correct	311 ms	229264 KB	Output is correct
78	Correct	269 ms	150948 KB	Output is correct
79	Correct	418 ms	190072 KB	Output is correct
80	Correct	421 ms	190200 KB	Output is correct
81	Correct	309 ms	229372 KB	Output is correct
82	Correct	270 ms	151032 KB	Output is correct
83	Correct	537 ms	190256 KB	Output is correct
84	Correct	428 ms	190200 KB	Output is correct
85	Correct	453 ms	190072 KB	Output is correct
86	Correct	591 ms	190200 KB	Output is correct
87	Correct	435 ms	190152 KB	Output is correct
88	Correct	445 ms	190244 KB	Output is correct
89	Correct	464 ms	190172 KB	Output is correct
90	Correct	456 ms	190272 KB	Output is correct
91	Correct	450 ms	190200 KB	Output is correct
92	Correct	485 ms	190200 KB	Output is correct
93	Correct	462 ms	190272 KB	Output is correct
94	Correct	479 ms	190200 KB	Output is correct
95	Correct	477 ms	190220 KB	Output is correct
96	Correct	485 ms	190200 KB	Output is correct
97	Correct	493 ms	190200 KB	Output is correct
98	Correct	482 ms	190232 KB	Output is correct
99	Correct	487 ms	190180 KB	Output is correct
100	Correct	546 ms	190272 KB	Output is correct
101	Correct	512 ms	190072 KB	Output is correct
102	Correct	462 ms	190180 KB	Output is correct

답안 #260391

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 4.0 / 4.0

Subtask #4 49.0 / 49.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
4.0 / 4.0

Subtask #4
49.0 / 49.0