#include <bits/stdc++.h>
using namespace std;
template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl
using ll = long long;
const int maxn = 1e6 + 5;
int n;
int dp[maxn][5];
int main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n;
string a, b;
cin>>a;
cin>>b;
for (int i=0; i<=n; i++) {
for (int j=0; j<3; j++) {
dp[i][j] = n+10;
}
}
//0: off
//1: on
//2: do nothing
auto go = [&](int op, char c) {
if (op==0) return '0';
if (op==1) return '1';
return c;
};
dp[0][2] = 0;
for (int i=0; i<n; i++) {
for (int p=0; p<3; p++) {
for (int j=0; j<3; j++) {
int cur = dp[i][p];
//new operation
if (j!=p && j!=2) {
cur++;
}
//initiate flip
if ((i==0 || go(p,a[i-1])==b[i-1]) && go(j,a[i])!=b[i]) {
cur++;
}
dp[i+1][j] = min(dp[i+1][j], cur);
}
}
}
int res = n+10;
for (int x=0; x<3; x++) {
res = min(res, dp[n][x]);
}
cout<<res<<endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
384 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
384 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
0 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
384 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
384 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
0 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
364 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
1 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
1 ms |
364 KB |
Output is correct |
| 55 |
Correct |
1 ms |
364 KB |
Output is correct |
| 56 |
Correct |
1 ms |
364 KB |
Output is correct |
| 57 |
Correct |
1 ms |
364 KB |
Output is correct |
| 58 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
54 ms |
22844 KB |
Output is correct |
| 8 |
Correct |
53 ms |
23996 KB |
Output is correct |
| 9 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 10 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 11 |
Correct |
59 ms |
23996 KB |
Output is correct |
| 12 |
Correct |
47 ms |
23996 KB |
Output is correct |
| 13 |
Correct |
50 ms |
23996 KB |
Output is correct |
| 14 |
Correct |
52 ms |
23996 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
384 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
0 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
0 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
384 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
0 ms |
364 KB |
Output is correct |
| 21 |
Correct |
0 ms |
364 KB |
Output is correct |
| 22 |
Correct |
0 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
364 KB |
Output is correct |
| 24 |
Correct |
0 ms |
364 KB |
Output is correct |
| 25 |
Correct |
0 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
0 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
364 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
364 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
1 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
364 KB |
Output is correct |
| 43 |
Correct |
1 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
1 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
1 ms |
364 KB |
Output is correct |
| 55 |
Correct |
1 ms |
364 KB |
Output is correct |
| 56 |
Correct |
1 ms |
364 KB |
Output is correct |
| 57 |
Correct |
1 ms |
364 KB |
Output is correct |
| 58 |
Correct |
1 ms |
364 KB |
Output is correct |
| 59 |
Correct |
1 ms |
364 KB |
Output is correct |
| 60 |
Correct |
1 ms |
364 KB |
Output is correct |
| 61 |
Correct |
1 ms |
364 KB |
Output is correct |
| 62 |
Correct |
1 ms |
364 KB |
Output is correct |
| 63 |
Correct |
1 ms |
364 KB |
Output is correct |
| 64 |
Correct |
1 ms |
364 KB |
Output is correct |
| 65 |
Correct |
54 ms |
22844 KB |
Output is correct |
| 66 |
Correct |
53 ms |
23996 KB |
Output is correct |
| 67 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 68 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 69 |
Correct |
59 ms |
23996 KB |
Output is correct |
| 70 |
Correct |
47 ms |
23996 KB |
Output is correct |
| 71 |
Correct |
50 ms |
23996 KB |
Output is correct |
| 72 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 73 |
Correct |
53 ms |
23996 KB |
Output is correct |
| 74 |
Correct |
56 ms |
23996 KB |
Output is correct |
| 75 |
Correct |
53 ms |
24124 KB |
Output is correct |
| 76 |
Correct |
48 ms |
23996 KB |
Output is correct |
| 77 |
Correct |
53 ms |
23996 KB |
Output is correct |
| 78 |
Correct |
53 ms |
23996 KB |
Output is correct |
| 79 |
Correct |
60 ms |
23996 KB |
Output is correct |
| 80 |
Correct |
49 ms |
23996 KB |
Output is correct |
| 81 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 82 |
Correct |
52 ms |
23996 KB |
Output is correct |
| 83 |
Correct |
55 ms |
23996 KB |
Output is correct |
| 84 |
Correct |
54 ms |
23996 KB |
Output is correct |
| 85 |
Correct |
55 ms |
23996 KB |
Output is correct |
| 86 |
Correct |
55 ms |
23996 KB |
Output is correct |
| 87 |
Correct |
57 ms |
23996 KB |
Output is correct |
| 88 |
Correct |
54 ms |
23996 KB |
Output is correct |
| 89 |
Correct |
54 ms |
23996 KB |
Output is correct |
| 90 |
Correct |
55 ms |
23996 KB |
Output is correct |
| 91 |
Correct |
58 ms |
23996 KB |
Output is correct |
| 92 |
Correct |
59 ms |
23996 KB |
Output is correct |
| 93 |
Correct |
59 ms |
24028 KB |
Output is correct |
| 94 |
Correct |
60 ms |
23996 KB |
Output is correct |
| 95 |
Correct |
61 ms |
23996 KB |
Output is correct |
| 96 |
Correct |
71 ms |
23996 KB |
Output is correct |
| 97 |
Correct |
61 ms |
23996 KB |
Output is correct |
| 98 |
Correct |
62 ms |
23996 KB |
Output is correct |
| 99 |
Correct |
59 ms |
24036 KB |
Output is correct |
| 100 |
Correct |
60 ms |
23996 KB |
Output is correct |
| 101 |
Correct |
61 ms |
23996 KB |
Output is correct |
| 102 |
Correct |
60 ms |
23996 KB |
Output is correct |
