#include<bits/stdc++.h>
using namespace std;
const int maxn=1e6+6;
string st;
string en;
int mask[maxn]; // 0: 0, 1: 1, 2: f, 3: 0f, 4: 1f, 5: nothing
int dp[maxn][6];
int n;
signed main() {
cin>>n;
cin>>st>>en;
st=' '+st;
en=' '+en;
for(int i=1 ; i<=n ; i++) {
if(st[i]!=en[i]) mask[i]+=(1<<2);
if(en[i]=='0') mask[i]+=(1<<4)+(1<<0);
if(en[i]=='1') mask[i]+=(1<<1)+(1<<3);
dp[i][0]=dp[i][1]=dp[i][2]=dp[i][3]=dp[i][4]=dp[i][5]=n+1;
}
dp[0][0]=dp[0][1]=dp[0][2]=1; dp[0][3]=dp[0][4]=2; dp[0][5]=0;
for(int i=1 ; i<=n ; i++) {
if(en[i]=='0') {
// 0 or 1f
dp[i][0]=min({dp[i-1][0],dp[i-1][1]+1,dp[i-1][2]+1,dp[i-1][3],dp[i-1][4]+1,dp[i-1][5]+1});
dp[i][4]=min({dp[i-1][0]+2,dp[i-1][1]+1,dp[i-1][2]+1,dp[i-1][3]+1,dp[i-1][4],dp[i-1][5]+2});
}
else {
dp[i][1]=min({dp[i-1][0]+1,dp[i-1][1],dp[i-1][2]+1,dp[i-1][3]+1,dp[i-1][4],dp[i-1][5]+1});
dp[i][3]=min({dp[i-1][0]+1,dp[i-1][1]+2,dp[i-1][2]+1,dp[i-1][3],dp[i-1][4]+1,dp[i-1][5]+2});
}
if(en[i]!=st[i]) {
dp[i][2]=min({dp[i-1][0]+1,dp[i-1][1]+1,dp[i-1][2],dp[i-1][3],dp[i-1][4],dp[i-1][5]+1});
}
else dp[i][5]=min({dp[i-1][0],dp[i-1][1],dp[i-1][2],dp[i-1][3],dp[i-1][4],dp[i-1][5]});
}
cout<<min({dp[n][0],dp[n][1],dp[n][2],dp[n][3],dp[n][4],dp[n][5]});
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
0 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
300 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
0 ms |
204 KB |
Output is correct |
31 |
Correct |
0 ms |
204 KB |
Output is correct |
32 |
Correct |
0 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
0 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
300 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
0 ms |
204 KB |
Output is correct |
31 |
Correct |
0 ms |
204 KB |
Output is correct |
32 |
Correct |
0 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
35 |
Correct |
1 ms |
332 KB |
Output is correct |
36 |
Correct |
0 ms |
332 KB |
Output is correct |
37 |
Correct |
1 ms |
332 KB |
Output is correct |
38 |
Correct |
1 ms |
332 KB |
Output is correct |
39 |
Correct |
1 ms |
332 KB |
Output is correct |
40 |
Correct |
1 ms |
332 KB |
Output is correct |
41 |
Correct |
1 ms |
332 KB |
Output is correct |
42 |
Correct |
1 ms |
332 KB |
Output is correct |
43 |
Correct |
1 ms |
332 KB |
Output is correct |
44 |
Correct |
1 ms |
332 KB |
Output is correct |
45 |
Correct |
1 ms |
332 KB |
Output is correct |
46 |
Correct |
1 ms |
332 KB |
Output is correct |
47 |
Correct |
0 ms |
332 KB |
Output is correct |
48 |
Correct |
0 ms |
332 KB |
Output is correct |
49 |
Correct |
0 ms |
332 KB |
Output is correct |
50 |
Correct |
0 ms |
332 KB |
Output is correct |
51 |
Correct |
0 ms |
332 KB |
Output is correct |
52 |
Correct |
1 ms |
332 KB |
Output is correct |
53 |
Correct |
1 ms |
332 KB |
Output is correct |
54 |
Correct |
1 ms |
332 KB |
Output is correct |
55 |
Correct |
1 ms |
332 KB |
Output is correct |
56 |
Correct |
1 ms |
332 KB |
Output is correct |
57 |
Correct |
0 ms |
332 KB |
Output is correct |
58 |
Correct |
0 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
69 ms |
29608 KB |
Output is correct |
8 |
Correct |
73 ms |
29536 KB |
Output is correct |
9 |
Correct |
70 ms |
29580 KB |
Output is correct |
10 |
Correct |
78 ms |
29584 KB |
Output is correct |
11 |
Correct |
67 ms |
29528 KB |
Output is correct |
12 |
Correct |
65 ms |
29580 KB |
Output is correct |
13 |
Correct |
67 ms |
29580 KB |
Output is correct |
14 |
Correct |
65 ms |
29552 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
1 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
0 ms |
204 KB |
Output is correct |
22 |
Correct |
0 ms |
204 KB |
Output is correct |
23 |
Correct |
0 ms |
204 KB |
Output is correct |
24 |
Correct |
0 ms |
204 KB |
Output is correct |
25 |
Correct |
0 ms |
204 KB |
Output is correct |
26 |
Correct |
0 ms |
204 KB |
Output is correct |
27 |
Correct |
0 ms |
300 KB |
Output is correct |
28 |
Correct |
0 ms |
204 KB |
Output is correct |
29 |
Correct |
0 ms |
204 KB |
Output is correct |
30 |
Correct |
0 ms |
204 KB |
Output is correct |
31 |
Correct |
0 ms |
204 KB |
Output is correct |
32 |
Correct |
0 ms |
204 KB |
Output is correct |
33 |
Correct |
0 ms |
204 KB |
Output is correct |
34 |
Correct |
0 ms |
204 KB |
Output is correct |
35 |
Correct |
1 ms |
332 KB |
Output is correct |
36 |
Correct |
0 ms |
332 KB |
Output is correct |
37 |
Correct |
1 ms |
332 KB |
Output is correct |
38 |
Correct |
1 ms |
332 KB |
Output is correct |
39 |
Correct |
1 ms |
332 KB |
Output is correct |
40 |
Correct |
1 ms |
332 KB |
Output is correct |
41 |
Correct |
1 ms |
332 KB |
Output is correct |
42 |
Correct |
1 ms |
332 KB |
Output is correct |
43 |
Correct |
1 ms |
332 KB |
Output is correct |
44 |
Correct |
1 ms |
332 KB |
Output is correct |
45 |
Correct |
1 ms |
332 KB |
Output is correct |
46 |
Correct |
1 ms |
332 KB |
Output is correct |
47 |
Correct |
0 ms |
332 KB |
Output is correct |
48 |
Correct |
0 ms |
332 KB |
Output is correct |
49 |
Correct |
0 ms |
332 KB |
Output is correct |
50 |
Correct |
0 ms |
332 KB |
Output is correct |
51 |
Correct |
0 ms |
332 KB |
Output is correct |
52 |
Correct |
1 ms |
332 KB |
Output is correct |
53 |
Correct |
1 ms |
332 KB |
Output is correct |
54 |
Correct |
1 ms |
332 KB |
Output is correct |
55 |
Correct |
1 ms |
332 KB |
Output is correct |
56 |
Correct |
1 ms |
332 KB |
Output is correct |
57 |
Correct |
0 ms |
332 KB |
Output is correct |
58 |
Correct |
0 ms |
332 KB |
Output is correct |
59 |
Correct |
0 ms |
204 KB |
Output is correct |
60 |
Correct |
0 ms |
204 KB |
Output is correct |
61 |
Correct |
0 ms |
204 KB |
Output is correct |
62 |
Correct |
1 ms |
204 KB |
Output is correct |
63 |
Correct |
0 ms |
204 KB |
Output is correct |
64 |
Correct |
0 ms |
204 KB |
Output is correct |
65 |
Correct |
69 ms |
29608 KB |
Output is correct |
66 |
Correct |
73 ms |
29536 KB |
Output is correct |
67 |
Correct |
70 ms |
29580 KB |
Output is correct |
68 |
Correct |
78 ms |
29584 KB |
Output is correct |
69 |
Correct |
67 ms |
29528 KB |
Output is correct |
70 |
Correct |
65 ms |
29580 KB |
Output is correct |
71 |
Correct |
67 ms |
29580 KB |
Output is correct |
72 |
Correct |
65 ms |
29552 KB |
Output is correct |
73 |
Correct |
69 ms |
30932 KB |
Output is correct |
74 |
Correct |
75 ms |
30880 KB |
Output is correct |
75 |
Correct |
68 ms |
30900 KB |
Output is correct |
76 |
Correct |
72 ms |
30856 KB |
Output is correct |
77 |
Correct |
70 ms |
30872 KB |
Output is correct |
78 |
Correct |
68 ms |
30968 KB |
Output is correct |
79 |
Correct |
80 ms |
30892 KB |
Output is correct |
80 |
Correct |
71 ms |
30932 KB |
Output is correct |
81 |
Correct |
70 ms |
30860 KB |
Output is correct |
82 |
Correct |
67 ms |
30932 KB |
Output is correct |
83 |
Correct |
75 ms |
31076 KB |
Output is correct |
84 |
Correct |
81 ms |
30904 KB |
Output is correct |
85 |
Correct |
79 ms |
30860 KB |
Output is correct |
86 |
Correct |
76 ms |
30932 KB |
Output is correct |
87 |
Correct |
74 ms |
30896 KB |
Output is correct |
88 |
Correct |
75 ms |
30860 KB |
Output is correct |
89 |
Correct |
93 ms |
30912 KB |
Output is correct |
90 |
Correct |
83 ms |
30900 KB |
Output is correct |
91 |
Correct |
81 ms |
30892 KB |
Output is correct |
92 |
Correct |
82 ms |
30876 KB |
Output is correct |
93 |
Correct |
90 ms |
30932 KB |
Output is correct |
94 |
Correct |
99 ms |
31044 KB |
Output is correct |
95 |
Correct |
82 ms |
30904 KB |
Output is correct |
96 |
Correct |
91 ms |
30932 KB |
Output is correct |
97 |
Correct |
85 ms |
30852 KB |
Output is correct |
98 |
Correct |
86 ms |
30856 KB |
Output is correct |
99 |
Correct |
85 ms |
30928 KB |
Output is correct |
100 |
Correct |
85 ms |
30896 KB |
Output is correct |
101 |
Correct |
87 ms |
30860 KB |
Output is correct |
102 |
Correct |
86 ms |
30968 KB |
Output is correct |