#include <bits/stdc++.h>
constexpr int N = 1000000;
int dp[N + 1][2][2][2];
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n;
std::cin >> n;
std::string a, b;
std::cin >> a >> b;
a = "#" + a;
b = "#" + b;
memset(dp, 0x3f, sizeof dp);
dp[0][0][0][0] = 0;
for (int i = 1; i <= n; i++) {
for (int a0 = 0; a0 < 2; a0++)
for (int a1 = 0; a1 < 2; a1++)
for (int xr = 0; xr < 2; xr++) {
char t = a[i];
if (a0) t = '0';
if (a1) t = '1';
if (xr) t ^= 1;
if (t != b[i]) {
continue;
}
int &ret = dp[i][a0][a1][xr];
ret = dp[i - 1][a0][a1][xr];
for (int A0 = 0; A0 < 2; A0++) {
for (int A1 = 0; A1 < 2; A1++) {
for (int XR = 0; XR < 2; XR++) {
ret = std::min(ret, dp[i - 1][A0][A1][XR] + (a0 > A0) + (a1 > A1) + (xr > XR));
}
}
}
}
}
int ans = n;
for (int a0 = 0; a0 < 2; a0++)
for (int a1 = 0; a1 < 2; a1++)
for (int xr = 0; xr < 2; xr++)
ans = std::min(ans, dp[n][a0][a1][xr]);
std::cout << ans << "\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
31544 KB |
Output is correct |
2 |
Correct |
14 ms |
31572 KB |
Output is correct |
3 |
Correct |
14 ms |
31564 KB |
Output is correct |
4 |
Correct |
14 ms |
31564 KB |
Output is correct |
5 |
Correct |
19 ms |
31592 KB |
Output is correct |
6 |
Correct |
16 ms |
31564 KB |
Output is correct |
7 |
Correct |
14 ms |
31540 KB |
Output is correct |
8 |
Correct |
15 ms |
31564 KB |
Output is correct |
9 |
Correct |
14 ms |
31564 KB |
Output is correct |
10 |
Correct |
14 ms |
31576 KB |
Output is correct |
11 |
Correct |
14 ms |
31580 KB |
Output is correct |
12 |
Correct |
15 ms |
31532 KB |
Output is correct |
13 |
Correct |
14 ms |
31532 KB |
Output is correct |
14 |
Correct |
19 ms |
31592 KB |
Output is correct |
15 |
Correct |
14 ms |
31564 KB |
Output is correct |
16 |
Correct |
15 ms |
31560 KB |
Output is correct |
17 |
Correct |
14 ms |
31516 KB |
Output is correct |
18 |
Correct |
21 ms |
31564 KB |
Output is correct |
19 |
Correct |
14 ms |
31624 KB |
Output is correct |
20 |
Correct |
14 ms |
31564 KB |
Output is correct |
21 |
Correct |
17 ms |
31564 KB |
Output is correct |
22 |
Correct |
15 ms |
31564 KB |
Output is correct |
23 |
Correct |
14 ms |
31564 KB |
Output is correct |
24 |
Correct |
15 ms |
31568 KB |
Output is correct |
25 |
Correct |
15 ms |
31548 KB |
Output is correct |
26 |
Correct |
15 ms |
31564 KB |
Output is correct |
27 |
Correct |
18 ms |
31564 KB |
Output is correct |
28 |
Correct |
17 ms |
31588 KB |
Output is correct |
29 |
Correct |
15 ms |
31564 KB |
Output is correct |
30 |
Correct |
18 ms |
31504 KB |
Output is correct |
31 |
Correct |
15 ms |
31536 KB |
Output is correct |
32 |
Correct |
18 ms |
31608 KB |
Output is correct |
33 |
Correct |
16 ms |
31560 KB |
Output is correct |
34 |
Correct |
17 ms |
31564 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
31544 KB |
Output is correct |
2 |
Correct |
14 ms |
31572 KB |
Output is correct |
3 |
Correct |
14 ms |
31564 KB |
Output is correct |
4 |
Correct |
14 ms |
31564 KB |
Output is correct |
5 |
Correct |
19 ms |
31592 KB |
Output is correct |
6 |
Correct |
16 ms |
31564 KB |
Output is correct |
7 |
Correct |
14 ms |
31540 KB |
Output is correct |
8 |
Correct |
15 ms |
31564 KB |
Output is correct |
9 |
Correct |
14 ms |
31564 KB |
Output is correct |
10 |
Correct |
14 ms |
31576 KB |
Output is correct |
11 |
Correct |
14 ms |
31580 KB |
Output is correct |
12 |
Correct |
15 ms |
31532 KB |
Output is correct |
13 |
Correct |
14 ms |
31532 KB |
Output is correct |
14 |
Correct |
19 ms |
31592 KB |
Output is correct |
15 |
Correct |
14 ms |
31564 KB |
Output is correct |
16 |
Correct |
15 ms |
31560 KB |
Output is correct |
17 |
Correct |
14 ms |
31516 KB |
Output is correct |
18 |
Correct |
21 ms |
31564 KB |
Output is correct |
19 |
Correct |
14 ms |
31624 KB |
Output is correct |
20 |
Correct |
14 ms |
31564 KB |
Output is correct |
21 |
Correct |
17 ms |
31564 KB |
Output is correct |
22 |
Correct |
15 ms |
31564 KB |
Output is correct |
23 |
Correct |
14 ms |
31564 KB |
Output is correct |
24 |
Correct |
15 ms |
31568 KB |
Output is correct |
25 |
Correct |
15 ms |
31548 KB |
Output is correct |
26 |
Correct |
15 ms |
31564 KB |
Output is correct |
27 |
Correct |
18 ms |
31564 KB |
Output is correct |
28 |
Correct |
17 ms |
31588 KB |
Output is correct |
29 |
Correct |
15 ms |
31564 KB |
Output is correct |
30 |
Correct |
18 ms |
31504 KB |
Output is correct |
31 |
Correct |
15 ms |
31536 KB |
Output is correct |
32 |
Correct |
18 ms |
31608 KB |
Output is correct |
33 |
Correct |
16 ms |
31560 KB |
Output is correct |
34 |
Correct |
17 ms |
31564 KB |
Output is correct |
35 |
Correct |
14 ms |
31564 KB |
Output is correct |
36 |
Correct |
15 ms |
31544 KB |
Output is correct |
37 |
Correct |
14 ms |
31564 KB |
Output is correct |
38 |
Correct |
16 ms |
31628 KB |
Output is correct |
39 |
Correct |
15 ms |
31564 KB |
Output is correct |
40 |
Correct |
15 ms |
31544 KB |
Output is correct |
41 |
Correct |
15 ms |
31564 KB |
Output is correct |
42 |
Correct |
15 ms |
31564 KB |
Output is correct |
43 |
Correct |
15 ms |
31620 KB |
Output is correct |
44 |
Correct |
19 ms |
31564 KB |
Output is correct |
45 |
Correct |
18 ms |
31576 KB |
Output is correct |
46 |
Correct |
15 ms |
31536 KB |
Output is correct |
47 |
Correct |
15 ms |
31532 KB |
Output is correct |
48 |
Correct |
15 ms |
31536 KB |
Output is correct |
49 |
Correct |
15 ms |
31540 KB |
Output is correct |
50 |
Correct |
14 ms |
31564 KB |
Output is correct |
51 |
Correct |
18 ms |
31516 KB |
Output is correct |
52 |
Correct |
19 ms |
31564 KB |
Output is correct |
53 |
Correct |
15 ms |
31564 KB |
Output is correct |
54 |
Correct |
15 ms |
31520 KB |
Output is correct |
55 |
Correct |
15 ms |
31588 KB |
Output is correct |
56 |
Correct |
17 ms |
31564 KB |
Output is correct |
57 |
Correct |
17 ms |
31572 KB |
Output is correct |
58 |
Correct |
17 ms |
31540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
17 ms |
31564 KB |
Output is correct |
2 |
Correct |
15 ms |
31564 KB |
Output is correct |
3 |
Correct |
14 ms |
31564 KB |
Output is correct |
4 |
Correct |
16 ms |
31692 KB |
Output is correct |
5 |
Correct |
15 ms |
31564 KB |
Output is correct |
6 |
Correct |
15 ms |
31528 KB |
Output is correct |
7 |
Correct |
96 ms |
33512 KB |
Output is correct |
8 |
Correct |
91 ms |
33524 KB |
Output is correct |
9 |
Correct |
92 ms |
33576 KB |
Output is correct |
10 |
Correct |
121 ms |
33592 KB |
Output is correct |
11 |
Correct |
95 ms |
33592 KB |
Output is correct |
12 |
Correct |
93 ms |
33524 KB |
Output is correct |
13 |
Correct |
93 ms |
33524 KB |
Output is correct |
14 |
Correct |
101 ms |
33540 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
18 ms |
31544 KB |
Output is correct |
2 |
Correct |
14 ms |
31572 KB |
Output is correct |
3 |
Correct |
14 ms |
31564 KB |
Output is correct |
4 |
Correct |
14 ms |
31564 KB |
Output is correct |
5 |
Correct |
19 ms |
31592 KB |
Output is correct |
6 |
Correct |
16 ms |
31564 KB |
Output is correct |
7 |
Correct |
14 ms |
31540 KB |
Output is correct |
8 |
Correct |
15 ms |
31564 KB |
Output is correct |
9 |
Correct |
14 ms |
31564 KB |
Output is correct |
10 |
Correct |
14 ms |
31576 KB |
Output is correct |
11 |
Correct |
14 ms |
31580 KB |
Output is correct |
12 |
Correct |
15 ms |
31532 KB |
Output is correct |
13 |
Correct |
14 ms |
31532 KB |
Output is correct |
14 |
Correct |
19 ms |
31592 KB |
Output is correct |
15 |
Correct |
14 ms |
31564 KB |
Output is correct |
16 |
Correct |
15 ms |
31560 KB |
Output is correct |
17 |
Correct |
14 ms |
31516 KB |
Output is correct |
18 |
Correct |
21 ms |
31564 KB |
Output is correct |
19 |
Correct |
14 ms |
31624 KB |
Output is correct |
20 |
Correct |
14 ms |
31564 KB |
Output is correct |
21 |
Correct |
17 ms |
31564 KB |
Output is correct |
22 |
Correct |
15 ms |
31564 KB |
Output is correct |
23 |
Correct |
14 ms |
31564 KB |
Output is correct |
24 |
Correct |
15 ms |
31568 KB |
Output is correct |
25 |
Correct |
15 ms |
31548 KB |
Output is correct |
26 |
Correct |
15 ms |
31564 KB |
Output is correct |
27 |
Correct |
18 ms |
31564 KB |
Output is correct |
28 |
Correct |
17 ms |
31588 KB |
Output is correct |
29 |
Correct |
15 ms |
31564 KB |
Output is correct |
30 |
Correct |
18 ms |
31504 KB |
Output is correct |
31 |
Correct |
15 ms |
31536 KB |
Output is correct |
32 |
Correct |
18 ms |
31608 KB |
Output is correct |
33 |
Correct |
16 ms |
31560 KB |
Output is correct |
34 |
Correct |
17 ms |
31564 KB |
Output is correct |
35 |
Correct |
14 ms |
31564 KB |
Output is correct |
36 |
Correct |
15 ms |
31544 KB |
Output is correct |
37 |
Correct |
14 ms |
31564 KB |
Output is correct |
38 |
Correct |
16 ms |
31628 KB |
Output is correct |
39 |
Correct |
15 ms |
31564 KB |
Output is correct |
40 |
Correct |
15 ms |
31544 KB |
Output is correct |
41 |
Correct |
15 ms |
31564 KB |
Output is correct |
42 |
Correct |
15 ms |
31564 KB |
Output is correct |
43 |
Correct |
15 ms |
31620 KB |
Output is correct |
44 |
Correct |
19 ms |
31564 KB |
Output is correct |
45 |
Correct |
18 ms |
31576 KB |
Output is correct |
46 |
Correct |
15 ms |
31536 KB |
Output is correct |
47 |
Correct |
15 ms |
31532 KB |
Output is correct |
48 |
Correct |
15 ms |
31536 KB |
Output is correct |
49 |
Correct |
15 ms |
31540 KB |
Output is correct |
50 |
Correct |
14 ms |
31564 KB |
Output is correct |
51 |
Correct |
18 ms |
31516 KB |
Output is correct |
52 |
Correct |
19 ms |
31564 KB |
Output is correct |
53 |
Correct |
15 ms |
31564 KB |
Output is correct |
54 |
Correct |
15 ms |
31520 KB |
Output is correct |
55 |
Correct |
15 ms |
31588 KB |
Output is correct |
56 |
Correct |
17 ms |
31564 KB |
Output is correct |
57 |
Correct |
17 ms |
31572 KB |
Output is correct |
58 |
Correct |
17 ms |
31540 KB |
Output is correct |
59 |
Correct |
17 ms |
31564 KB |
Output is correct |
60 |
Correct |
15 ms |
31564 KB |
Output is correct |
61 |
Correct |
14 ms |
31564 KB |
Output is correct |
62 |
Correct |
16 ms |
31692 KB |
Output is correct |
63 |
Correct |
15 ms |
31564 KB |
Output is correct |
64 |
Correct |
15 ms |
31528 KB |
Output is correct |
65 |
Correct |
96 ms |
33512 KB |
Output is correct |
66 |
Correct |
91 ms |
33524 KB |
Output is correct |
67 |
Correct |
92 ms |
33576 KB |
Output is correct |
68 |
Correct |
121 ms |
33592 KB |
Output is correct |
69 |
Correct |
95 ms |
33592 KB |
Output is correct |
70 |
Correct |
93 ms |
33524 KB |
Output is correct |
71 |
Correct |
93 ms |
33524 KB |
Output is correct |
72 |
Correct |
101 ms |
33540 KB |
Output is correct |
73 |
Correct |
99 ms |
33524 KB |
Output is correct |
74 |
Correct |
92 ms |
33584 KB |
Output is correct |
75 |
Correct |
94 ms |
33492 KB |
Output is correct |
76 |
Correct |
95 ms |
33512 KB |
Output is correct |
77 |
Correct |
120 ms |
33524 KB |
Output is correct |
78 |
Correct |
92 ms |
33508 KB |
Output is correct |
79 |
Correct |
98 ms |
33568 KB |
Output is correct |
80 |
Correct |
110 ms |
33528 KB |
Output is correct |
81 |
Correct |
93 ms |
33528 KB |
Output is correct |
82 |
Correct |
91 ms |
33524 KB |
Output is correct |
83 |
Correct |
114 ms |
33556 KB |
Output is correct |
84 |
Correct |
109 ms |
33524 KB |
Output is correct |
85 |
Correct |
118 ms |
33524 KB |
Output is correct |
86 |
Correct |
96 ms |
33524 KB |
Output is correct |
87 |
Correct |
109 ms |
33508 KB |
Output is correct |
88 |
Correct |
154 ms |
33524 KB |
Output is correct |
89 |
Correct |
96 ms |
33492 KB |
Output is correct |
90 |
Correct |
100 ms |
33552 KB |
Output is correct |
91 |
Correct |
129 ms |
33524 KB |
Output is correct |
92 |
Correct |
130 ms |
33496 KB |
Output is correct |
93 |
Correct |
103 ms |
33516 KB |
Output is correct |
94 |
Correct |
103 ms |
33524 KB |
Output is correct |
95 |
Correct |
100 ms |
33524 KB |
Output is correct |
96 |
Correct |
121 ms |
33520 KB |
Output is correct |
97 |
Correct |
121 ms |
33524 KB |
Output is correct |
98 |
Correct |
100 ms |
33528 KB |
Output is correct |
99 |
Correct |
100 ms |
33540 KB |
Output is correct |
100 |
Correct |
122 ms |
33528 KB |
Output is correct |
101 |
Correct |
135 ms |
33576 KB |
Output is correct |
102 |
Correct |
103 ms |
33572 KB |
Output is correct |