#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1e6;
int N;
char A[MAXN+10], B[MAXN+10];
int dp[MAXN+10][3];
int main()
{
int i, j;
scanf("%d%s%s", &N, A+1, B+1);
for(i=1; i<=N; i++) A[i]-='0', B[i]-='0';
dp[1][0]=1+(B[1]!=0);
dp[1][1]=1+(B[1]!=1);
dp[1][2]=(A[1]!=B[1]);
//printf("%d %d %d\n", dp[1][0], dp[1][1], dp[1][2]);
for(i=2; i<=N; i++)
{
dp[i][0]=min(dp[i-1][0]+(B[i]!=0 && B[i-1]==0), dp[i-1][2]+1+(B[i]!=0 && A[i-1]==B[i-1]));
dp[i][1]=min(dp[i-1][1]+(B[i]!=1 && B[i-1]==1), dp[i-1][2]+1+(B[i]!=1 && A[i-1]==B[i-1]));
dp[i][2]=min(min(dp[i-1][0]+(A[i]!=B[i] && B[i-1]==0), dp[i-1][1]+(A[i]!=B[i] && B[i-1]==1)), dp[i-1][2]+(A[i]!=B[i] && A[i-1]==B[i-1]));
//printf("%d %d %d\n", dp[i][0], dp[i][1], dp[i][2]);
}
printf("%d", min(dp[N][0], min(dp[N][1], dp[N][2])));
}
Compilation message
lamp.cpp: In function 'int main()':
lamp.cpp:16:12: warning: unused variable 'j' [-Wunused-variable]
int i, j;
^
lamp.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%s%s", &N, A+1, B+1);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
372 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
372 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
504 KB |
Output is correct |
36 |
Correct |
2 ms |
372 KB |
Output is correct |
37 |
Correct |
2 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
376 KB |
Output is correct |
39 |
Correct |
2 ms |
348 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
2 ms |
504 KB |
Output is correct |
43 |
Correct |
2 ms |
404 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
376 KB |
Output is correct |
46 |
Correct |
2 ms |
404 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
376 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
2 ms |
376 KB |
Output is correct |
55 |
Correct |
2 ms |
376 KB |
Output is correct |
56 |
Correct |
2 ms |
376 KB |
Output is correct |
57 |
Correct |
2 ms |
376 KB |
Output is correct |
58 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
380 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
25 ms |
15992 KB |
Output is correct |
8 |
Correct |
25 ms |
15996 KB |
Output is correct |
9 |
Correct |
25 ms |
15940 KB |
Output is correct |
10 |
Correct |
25 ms |
15992 KB |
Output is correct |
11 |
Correct |
25 ms |
15992 KB |
Output is correct |
12 |
Correct |
25 ms |
15992 KB |
Output is correct |
13 |
Correct |
25 ms |
15992 KB |
Output is correct |
14 |
Correct |
25 ms |
15992 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
376 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
376 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
376 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
2 ms |
376 KB |
Output is correct |
18 |
Correct |
2 ms |
376 KB |
Output is correct |
19 |
Correct |
2 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
2 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
376 KB |
Output is correct |
25 |
Correct |
2 ms |
376 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
376 KB |
Output is correct |
28 |
Correct |
2 ms |
376 KB |
Output is correct |
29 |
Correct |
2 ms |
372 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
2 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
376 KB |
Output is correct |
33 |
Correct |
2 ms |
376 KB |
Output is correct |
34 |
Correct |
2 ms |
376 KB |
Output is correct |
35 |
Correct |
2 ms |
504 KB |
Output is correct |
36 |
Correct |
2 ms |
372 KB |
Output is correct |
37 |
Correct |
2 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
376 KB |
Output is correct |
39 |
Correct |
2 ms |
348 KB |
Output is correct |
40 |
Correct |
2 ms |
376 KB |
Output is correct |
41 |
Correct |
2 ms |
376 KB |
Output is correct |
42 |
Correct |
2 ms |
504 KB |
Output is correct |
43 |
Correct |
2 ms |
404 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
376 KB |
Output is correct |
46 |
Correct |
2 ms |
404 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
376 KB |
Output is correct |
50 |
Correct |
2 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
2 ms |
376 KB |
Output is correct |
55 |
Correct |
2 ms |
376 KB |
Output is correct |
56 |
Correct |
2 ms |
376 KB |
Output is correct |
57 |
Correct |
2 ms |
376 KB |
Output is correct |
58 |
Correct |
2 ms |
376 KB |
Output is correct |
59 |
Correct |
2 ms |
380 KB |
Output is correct |
60 |
Correct |
2 ms |
376 KB |
Output is correct |
61 |
Correct |
2 ms |
376 KB |
Output is correct |
62 |
Correct |
2 ms |
376 KB |
Output is correct |
63 |
Correct |
2 ms |
376 KB |
Output is correct |
64 |
Correct |
2 ms |
376 KB |
Output is correct |
65 |
Correct |
25 ms |
15992 KB |
Output is correct |
66 |
Correct |
25 ms |
15996 KB |
Output is correct |
67 |
Correct |
25 ms |
15940 KB |
Output is correct |
68 |
Correct |
25 ms |
15992 KB |
Output is correct |
69 |
Correct |
25 ms |
15992 KB |
Output is correct |
70 |
Correct |
25 ms |
15992 KB |
Output is correct |
71 |
Correct |
25 ms |
15992 KB |
Output is correct |
72 |
Correct |
25 ms |
15992 KB |
Output is correct |
73 |
Correct |
25 ms |
15992 KB |
Output is correct |
74 |
Correct |
25 ms |
15932 KB |
Output is correct |
75 |
Correct |
26 ms |
15992 KB |
Output is correct |
76 |
Correct |
26 ms |
15992 KB |
Output is correct |
77 |
Correct |
25 ms |
15964 KB |
Output is correct |
78 |
Correct |
25 ms |
15992 KB |
Output is correct |
79 |
Correct |
25 ms |
15992 KB |
Output is correct |
80 |
Correct |
26 ms |
15992 KB |
Output is correct |
81 |
Correct |
25 ms |
15992 KB |
Output is correct |
82 |
Correct |
25 ms |
15992 KB |
Output is correct |
83 |
Correct |
30 ms |
15992 KB |
Output is correct |
84 |
Correct |
30 ms |
15992 KB |
Output is correct |
85 |
Correct |
30 ms |
15992 KB |
Output is correct |
86 |
Correct |
30 ms |
15976 KB |
Output is correct |
87 |
Correct |
30 ms |
15992 KB |
Output is correct |
88 |
Correct |
30 ms |
15996 KB |
Output is correct |
89 |
Correct |
30 ms |
15924 KB |
Output is correct |
90 |
Correct |
30 ms |
15900 KB |
Output is correct |
91 |
Correct |
32 ms |
15992 KB |
Output is correct |
92 |
Correct |
33 ms |
15992 KB |
Output is correct |
93 |
Correct |
34 ms |
15996 KB |
Output is correct |
94 |
Correct |
35 ms |
15964 KB |
Output is correct |
95 |
Correct |
37 ms |
15992 KB |
Output is correct |
96 |
Correct |
34 ms |
15988 KB |
Output is correct |
97 |
Correct |
34 ms |
15992 KB |
Output is correct |
98 |
Correct |
34 ms |
15992 KB |
Output is correct |
99 |
Correct |
34 ms |
15992 KB |
Output is correct |
100 |
Correct |
34 ms |
15992 KB |
Output is correct |
101 |
Correct |
34 ms |
16120 KB |
Output is correct |
102 |
Correct |
37 ms |
15980 KB |
Output is correct |