# include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
int n, dp[N][2], pref[N][2];
unordered_set <char> st;
string a, b;
inline int calc (int l, int r, int type){
if (type == 0)
return pref[r][0] - pref[l - 1][0] + (b[l - 1] == b[l] && b[l] == '0');
return pref[r][1] - pref[l - 1][1] + (b[l - 1] == b[l] && b[l] == '1');
}
main(){
memset( dp, 0x3f3f3f3f, sizeof(dp) );
cin >> n >> a >> b;
a = ' ' + a;
b = ' ' + b;
for (int i = 1; i <= n; i++){
st.insert(a[i]);
if (b[i] != b[i - 1])
pref[i][ b[i] - 48 ] = 1;
pref[i][0] += pref[i - 1][0];
pref[i][1] += pref[i - 1][1];
}
if (st.size() == 1 && a[1] == '0'){
cout << calc(1, n, 1) << endl;
return 0;
}
dp[0][0] = 0;
for (int i = 1; i <= n; i++){
if (a[i] == b[i])
dp[i][0] = min( dp[i - 1][1], dp[i - 1][0] );
if (a[i] != b[i])
dp[i][1] = min( dp[i - 1][1], dp[i - 1][0] + 1);
for (int j = i; j >= 1; j--){
dp[i][0] = min( dp[i][0], dp[j - 1][0] + calc( j, i, 1 ) + 1 );
dp[i][0] = min( dp[i][0], dp[j - 1][0] + calc( j, i, 0 ) + 1 );
dp[i][0] = min( dp[i][0], dp[j - 1][1] + calc( j, i, 1 ) - (b[j] == '1') + 1 );
dp[i][0] = min( dp[i][0], dp[j - 1][1] + calc( j, i, 0 ) - (b[j] == '0') + 1 );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + calc( j, i, 0 ) + 1 );
dp[i][1] = min( dp[i][1], dp[j - 1][0] + calc( j, i, 0 ) - (b[i] == '0') + 2 );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + max(0, calc( j, i, 0 ) - (b[j] == '0') - (b[i] == '0') ) + 2 );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + calc( j, i, 1 ) + 1 );
dp[i][1] = min( dp[i][1], dp[j - 1][0] + calc( j, i, 1 ) - (b[i] == '1') + 2 );
dp[i][1] = min( dp[i][1], dp[j - 1][1] + max(0, calc( j, i, 1 ) - (b[j] == '1') - (b[i] == '1') ) + 2 );
}
}
cout << min(dp[n][0], dp[n][1]) << endl;
}
/**
13
0101100101001
1011111000000
13
0001101001101
0101100011011
**/
Compilation message
lamp.cpp:20:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main(){
^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 5 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8092 KB |
Output is correct |
| 8 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
9 ms |
8064 KB |
Output is correct |
| 20 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 27 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 28 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 29 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 30 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 31 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 32 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 33 |
Correct |
10 ms |
8320 KB |
Output is correct |
| 34 |
Correct |
6 ms |
8192 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 5 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8092 KB |
Output is correct |
| 8 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
9 ms |
8064 KB |
Output is correct |
| 20 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 27 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 28 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 29 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 30 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 31 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 32 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 33 |
Correct |
10 ms |
8320 KB |
Output is correct |
| 34 |
Correct |
6 ms |
8192 KB |
Output is correct |
| 35 |
Correct |
50 ms |
8224 KB |
Output is correct |
| 36 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 37 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 38 |
Correct |
55 ms |
8192 KB |
Output is correct |
| 39 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 40 |
Correct |
53 ms |
8192 KB |
Output is correct |
| 41 |
Correct |
65 ms |
8312 KB |
Output is correct |
| 42 |
Correct |
53 ms |
8192 KB |
Output is correct |
| 43 |
Correct |
59 ms |
8312 KB |
Output is correct |
| 44 |
Correct |
77 ms |
8192 KB |
Output is correct |
| 45 |
Correct |
51 ms |
8192 KB |
Output is correct |
| 46 |
Correct |
55 ms |
8192 KB |
Output is correct |
| 47 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 48 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 49 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 50 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 51 |
Correct |
60 ms |
8312 KB |
Output is correct |
| 52 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 53 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 54 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 55 |
Correct |
72 ms |
8192 KB |
Output is correct |
| 56 |
Correct |
56 ms |
8256 KB |
Output is correct |
| 57 |
Correct |
58 ms |
8224 KB |
Output is correct |
| 58 |
Correct |
54 ms |
8192 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 5 |
Correct |
9 ms |
8320 KB |
Output is correct |
| 6 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
99 ms |
17984 KB |
Output is correct |
| 8 |
Correct |
94 ms |
19904 KB |
Output is correct |
| 9 |
Correct |
127 ms |
20032 KB |
Output is correct |
| 10 |
Correct |
131 ms |
19888 KB |
Output is correct |
| 11 |
Correct |
126 ms |
19888 KB |
Output is correct |
| 12 |
Correct |
115 ms |
19948 KB |
Output is correct |
| 13 |
Correct |
119 ms |
19864 KB |
Output is correct |
| 14 |
Correct |
103 ms |
19900 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 2 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 3 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 4 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 5 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 6 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 7 |
Correct |
8 ms |
8092 KB |
Output is correct |
| 8 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 9 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 11 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 12 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 13 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 14 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 15 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 16 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 17 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 18 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 19 |
Correct |
9 ms |
8064 KB |
Output is correct |
| 20 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 21 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 22 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 23 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 24 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 25 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 26 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 27 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 28 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 29 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 30 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 31 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 32 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 33 |
Correct |
10 ms |
8320 KB |
Output is correct |
| 34 |
Correct |
6 ms |
8192 KB |
Output is correct |
| 35 |
Correct |
50 ms |
8224 KB |
Output is correct |
| 36 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 37 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 38 |
Correct |
55 ms |
8192 KB |
Output is correct |
| 39 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 40 |
Correct |
53 ms |
8192 KB |
Output is correct |
| 41 |
Correct |
65 ms |
8312 KB |
Output is correct |
| 42 |
Correct |
53 ms |
8192 KB |
Output is correct |
| 43 |
Correct |
59 ms |
8312 KB |
Output is correct |
| 44 |
Correct |
77 ms |
8192 KB |
Output is correct |
| 45 |
Correct |
51 ms |
8192 KB |
Output is correct |
| 46 |
Correct |
55 ms |
8192 KB |
Output is correct |
| 47 |
Correct |
58 ms |
8192 KB |
Output is correct |
| 48 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 49 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 50 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 51 |
Correct |
60 ms |
8312 KB |
Output is correct |
| 52 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 53 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 54 |
Correct |
52 ms |
8192 KB |
Output is correct |
| 55 |
Correct |
72 ms |
8192 KB |
Output is correct |
| 56 |
Correct |
56 ms |
8256 KB |
Output is correct |
| 57 |
Correct |
58 ms |
8224 KB |
Output is correct |
| 58 |
Correct |
54 ms |
8192 KB |
Output is correct |
| 59 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 60 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 61 |
Correct |
9 ms |
8192 KB |
Output is correct |
| 62 |
Correct |
10 ms |
8192 KB |
Output is correct |
| 63 |
Correct |
9 ms |
8320 KB |
Output is correct |
| 64 |
Correct |
8 ms |
8192 KB |
Output is correct |
| 65 |
Correct |
99 ms |
17984 KB |
Output is correct |
| 66 |
Correct |
94 ms |
19904 KB |
Output is correct |
| 67 |
Correct |
127 ms |
20032 KB |
Output is correct |
| 68 |
Correct |
131 ms |
19888 KB |
Output is correct |
| 69 |
Correct |
126 ms |
19888 KB |
Output is correct |
| 70 |
Correct |
115 ms |
19948 KB |
Output is correct |
| 71 |
Correct |
119 ms |
19864 KB |
Output is correct |
| 72 |
Correct |
103 ms |
19900 KB |
Output is correct |
| 73 |
Execution timed out |
1081 ms |
19940 KB |
Time limit exceeded |
| 74 |
Halted |
0 ms |
0 KB |
- |
