oj.uz

Submission #204060

# Submission time Handle Problem Language Result Execution time Memory
204060 2020-02-24T05:05:12 Z ics0503 Lamps (JOI19_lamps) C++17
10 / 100
 200 ms 67064 KB 
#include<stdio.h>

char a[1212121], b[1212121];
int D[1212121][4][4];
int min(int a, int b) { if (a < b)return a; return b; }
bool oper(int type, int type2, int w) {
	if (type == 0)return b[w] == '0';
	if (type == 1)return b[w] == '1';
	if (type == 2 && type2 == 3)return b[w] != a[w];
	if (type == 2 && type2 == 2)return b[w] == a[w];
	if (type == 2 && type2 == 1)return b[w] == '0';
	if (type == 2 && type2 == 0)return b[w] == '0';
	if (type == 3 && type2 == 3)return a[w] == b[w];
	return oper(type2, 3, w);
}
int main() {
	int n, i, j, k, p; scanf("%d%s%s", &n,a+1,b+1);
	for (i = 0; i < 4; i++)for (j = 0; j < 4; j++)D[0][i][j] = 1e9;
	D[0][3][3] = 0;
	for (i = 1; i <= n; i++) {
		for (j = 0; j < 4; j++) {
			for (k = 0; k < 4; k++) {
				D[i][j][k] = 1e9;
				if (oper(j, k, i)) {
					D[i][j][k] = D[i - 1][j][k];
					for (p = 0; p < 4; p++)
						D[i][j][k] = min(D[i][j][k], D[i - 1][p][k] + (j != 3));
					if (k == 3) {
						for (p = 0; p < 4; p++)
							D[i][j][3] = min(D[i][j][3], D[i - 1][p][j] + (p == 3));
					}
					for (p = 0; p < 4; p++)
						D[i][j][k] = min(D[i][j][k], D[i - 1][k][p] + (j != 3));
				}
			}
		}
	}
	int ans = 1e9;
	for (i = 0; i < 4; i++)for (j = 0; j < 4; j++)ans = min(ans, D[n][i][j]);
	printf("%d", ans);

	return 0;
}

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:17:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n, i, j, k, p; scanf("%d%s%s", &n,a+1,b+1);
                     ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 128 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 248 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 4 ms 376 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 128 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 248 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 4 ms 376 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 380 KB Output is correct
36 Correct 5 ms 376 KB Output is correct
37 Correct 5 ms 376 KB Output is correct
38 Correct 5 ms 376 KB Output is correct
39 Correct 5 ms 376 KB Output is correct
40 Incorrect 5 ms 376 KB Output isn't correct
41 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 372 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 200 ms 66808 KB Output is correct
8 Correct 191 ms 66812 KB Output is correct
9 Correct 196 ms 66936 KB Output is correct
10 Correct 191 ms 66808 KB Output is correct
11 Correct 194 ms 66808 KB Output is correct
12 Correct 186 ms 66808 KB Output is correct
13 Correct 192 ms 66808 KB Output is correct
14 Correct 198 ms 67064 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 128 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 248 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 376 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 6 ms 376 KB Output is correct
24 Correct 5 ms 256 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 4 ms 376 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 380 KB Output is correct
36 Correct 5 ms 376 KB Output is correct
37 Correct 5 ms 376 KB Output is correct
38 Correct 5 ms 376 KB Output is correct
39 Correct 5 ms 376 KB Output is correct
40 Incorrect 5 ms 376 KB Output isn't correct
41 Halted 0 ms 0 KB -