Submission #260389

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
260389	2020-08-10T08:12:38 Z	patrikpavic2	Lamps (JOI19_lamps)	C++17	6 / 100	262 ms	8440 KB

lamp

#include <cstdio>
#include <cstring>
#include <queue>

using namespace std;

const int N = 1e6 + 500;

int dis[N], n, A, B;
queue < int > Q;

int main(){
	memset(dis, -1, sizeof(dis));
	scanf("%d", &n);
	for(int i = 0;i < n;i++){
		char c; scanf(" %c", &c);
		A += (1 << i) * (c - '0');
	}
	for(int i = 0;i < n;i++){
		char c; scanf(" %c", &c);
		B += (1 << i) * (c - '0');
	}
	dis[A] = 0; Q.push(A);
	for(;!Q.empty();Q.pop()){
		int cur = Q.front();
		for(int l = 0;l < n;l++){
			int t1 = cur, t2 = cur, t3 = cur;
			for(int r = l;r < n;r++){
				t1 &= (1 << n) - (1 << r) - 1;
				t2 |= (1 << r);
				t3 ^= (1 << r);
				if(dis[t1] == -1){
					dis[t1] = dis[cur] + 1;
					Q.push(t1);
				}
				if(dis[t2] == -1){
					dis[t2] = dis[cur] + 1;
					Q.push(t2);
				}
				if(dis[t3] == -1){
					dis[t3] = dis[cur] + 1;
					Q.push(t3);
				}
			}
		}
	}
	printf("%d\n", dis[B]);
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
lamp.cpp:16:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   char c; scanf(" %c", &c);
           ~~~~~^~~~~~~~~~~
lamp.cpp:20:16: 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	4224 KB	Output is correct
2	Correct	2 ms	4224 KB	Output is correct
3	Correct	3 ms	4224 KB	Output is correct
4	Correct	3 ms	4224 KB	Output is correct
5	Correct	3 ms	4224 KB	Output is correct
6	Correct	2 ms	4224 KB	Output is correct
7	Correct	3 ms	4224 KB	Output is correct
8	Correct	253 ms	4728 KB	Output is correct
9	Correct	256 ms	4600 KB	Output is correct
10	Correct	102 ms	4480 KB	Output is correct
11	Correct	109 ms	4472 KB	Output is correct
12	Correct	252 ms	4856 KB	Output is correct
13	Correct	101 ms	4480 KB	Output is correct
14	Correct	253 ms	4728 KB	Output is correct
15	Correct	103 ms	4600 KB	Output is correct
16	Correct	248 ms	4736 KB	Output is correct
17	Correct	101 ms	4480 KB	Output is correct
18	Correct	250 ms	4856 KB	Output is correct
19	Correct	105 ms	4480 KB	Output is correct
20	Correct	253 ms	4728 KB	Output is correct
21	Correct	108 ms	4540 KB	Output is correct
22	Correct	255 ms	4728 KB	Output is correct
23	Correct	105 ms	4480 KB	Output is correct
24	Correct	251 ms	4856 KB	Output is correct
25	Correct	121 ms	4480 KB	Output is correct
26	Correct	249 ms	4728 KB	Output is correct
27	Correct	103 ms	4480 KB	Output is correct
28	Correct	44 ms	4352 KB	Output is correct
29	Correct	249 ms	4736 KB	Output is correct
30	Correct	103 ms	4480 KB	Output is correct
31	Correct	46 ms	4352 KB	Output is correct
32	Correct	262 ms	4828 KB	Output is correct
33	Correct	115 ms	4480 KB	Output is correct
34	Correct	45 ms	4352 KB	Output is correct

Subtask #2
0 / 41.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	4224 KB	Output is correct
2	Correct	2 ms	4224 KB	Output is correct
3	Correct	3 ms	4224 KB	Output is correct
4	Correct	3 ms	4224 KB	Output is correct
5	Correct	3 ms	4224 KB	Output is correct
6	Correct	2 ms	4224 KB	Output is correct
7	Correct	3 ms	4224 KB	Output is correct
8	Correct	253 ms	4728 KB	Output is correct
9	Correct	256 ms	4600 KB	Output is correct
10	Correct	102 ms	4480 KB	Output is correct
11	Correct	109 ms	4472 KB	Output is correct
12	Correct	252 ms	4856 KB	Output is correct
13	Correct	101 ms	4480 KB	Output is correct
14	Correct	253 ms	4728 KB	Output is correct
15	Correct	103 ms	4600 KB	Output is correct
16	Correct	248 ms	4736 KB	Output is correct
17	Correct	101 ms	4480 KB	Output is correct
18	Correct	250 ms	4856 KB	Output is correct
19	Correct	105 ms	4480 KB	Output is correct
20	Correct	253 ms	4728 KB	Output is correct
21	Correct	108 ms	4540 KB	Output is correct
22	Correct	255 ms	4728 KB	Output is correct
23	Correct	105 ms	4480 KB	Output is correct
24	Correct	251 ms	4856 KB	Output is correct
25	Correct	121 ms	4480 KB	Output is correct
26	Correct	249 ms	4728 KB	Output is correct
27	Correct	103 ms	4480 KB	Output is correct
28	Correct	44 ms	4352 KB	Output is correct
29	Correct	249 ms	4736 KB	Output is correct
30	Correct	103 ms	4480 KB	Output is correct
31	Correct	46 ms	4352 KB	Output is correct
32	Correct	262 ms	4828 KB	Output is correct
33	Correct	115 ms	4480 KB	Output is correct
34	Correct	45 ms	4352 KB	Output is correct
35	Runtime error	10 ms	8320 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
36	Halted	0 ms	0 KB	-

Subtask #3
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	4224 KB	Output is correct
2	Correct	3 ms	4224 KB	Output is correct
3	Correct	3 ms	4224 KB	Output is correct
4	Correct	3 ms	4224 KB	Output is correct
5	Correct	3 ms	4224 KB	Output is correct
6	Correct	2 ms	4224 KB	Output is correct
7	Runtime error	130 ms	8440 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
8	Halted	0 ms	0 KB	-

Subtask #4
0 / 49.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	4224 KB	Output is correct
2	Correct	2 ms	4224 KB	Output is correct
3	Correct	3 ms	4224 KB	Output is correct
4	Correct	3 ms	4224 KB	Output is correct
5	Correct	3 ms	4224 KB	Output is correct
6	Correct	2 ms	4224 KB	Output is correct
7	Correct	3 ms	4224 KB	Output is correct
8	Correct	253 ms	4728 KB	Output is correct
9	Correct	256 ms	4600 KB	Output is correct
10	Correct	102 ms	4480 KB	Output is correct
11	Correct	109 ms	4472 KB	Output is correct
12	Correct	252 ms	4856 KB	Output is correct
13	Correct	101 ms	4480 KB	Output is correct
14	Correct	253 ms	4728 KB	Output is correct
15	Correct	103 ms	4600 KB	Output is correct
16	Correct	248 ms	4736 KB	Output is correct
17	Correct	101 ms	4480 KB	Output is correct
18	Correct	250 ms	4856 KB	Output is correct
19	Correct	105 ms	4480 KB	Output is correct
20	Correct	253 ms	4728 KB	Output is correct
21	Correct	108 ms	4540 KB	Output is correct
22	Correct	255 ms	4728 KB	Output is correct
23	Correct	105 ms	4480 KB	Output is correct
24	Correct	251 ms	4856 KB	Output is correct
25	Correct	121 ms	4480 KB	Output is correct
26	Correct	249 ms	4728 KB	Output is correct
27	Correct	103 ms	4480 KB	Output is correct
28	Correct	44 ms	4352 KB	Output is correct
29	Correct	249 ms	4736 KB	Output is correct
30	Correct	103 ms	4480 KB	Output is correct
31	Correct	46 ms	4352 KB	Output is correct
32	Correct	262 ms	4828 KB	Output is correct
33	Correct	115 ms	4480 KB	Output is correct
34	Correct	45 ms	4352 KB	Output is correct
35	Runtime error	10 ms	8320 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
36	Halted	0 ms	0 KB	-

Submission #260389

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 0 / 41.0

Subtask #3 0 / 4.0

Subtask #4 0 / 49.0

Subtask #1
6.0 / 6.0

Subtask #2
0 / 41.0

Subtask #3
0 / 4.0

Subtask #4
0 / 49.0