#include <bits/stdc++.h>
using namespace std;
#define int long long
mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());
const int N = 1e5 + 5, INF = 1e14;
vector<vector<int> > dp(N, vector<int> (3, INF));
// 0 - OFF
// 1 - ON
// 2 - UNUSED
char getvalue(char a, int x)
{
if(x == 0) return '0';
if(x == 1) return '1';
return a;
}
void Solve()
{
int n;
cin >> n;
string a, b;
cin >> a >> b;
dp[0][2] = 0;
for(int i = 1; i <= n; i++)
{
// cout << "i = " << i << endl;
char cur_a = a[i - 1], cur_b = b[i - 1];
for(int j = 0; j < 3; j++)
{
for(int k = 0; k < 3; k++)
{
int value = dp[i - 1][k];
// if the last value had an operation and the current value has a diff / no operation
if(j != k && j != 2)
{
value++;
}
// if the answer after the operation is not consistent with b[i]
if((i == 1 || getvalue(a[i - 2], k) == b[i - 2]) && getvalue(cur_a, j) != cur_b)
{
value++;
}
dp[i][j] = min(dp[i][j], value);
}
}
}
// for(int i = 0; i <= n; i++)
// {
// for(int j = 0; j < 3; j++)
// {
// cout << dp[i][j] << " ";
// }
// cout << "\n";
// }
int ans = INF;
for(int i = 0; i < 3; i++)
{
ans = min(ans, dp[n][i]);
}
cout << ans << "\n";
}
int32_t main()
{
auto begin = std::chrono::high_resolution_clock::now();
ios_base::sync_with_stdio(0);
cin.tie(0);
int t = 1;
// cin >> t;
for(int i = 1; i <= t; i++)
{
//cout << "Case #" << i << ": ";
Solve();
}
auto end = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n";
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
7 ms |
5828 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
6 ms |
5812 KB |
Output is correct |
| 9 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5844 KB |
Output is correct |
| 11 |
Correct |
7 ms |
5816 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5800 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5760 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5812 KB |
Output is correct |
| 18 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5736 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5824 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 23 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 24 |
Correct |
8 ms |
5812 KB |
Output is correct |
| 25 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 26 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 27 |
Correct |
7 ms |
5764 KB |
Output is correct |
| 28 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5816 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5808 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5768 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5824 KB |
Output is correct |
| 34 |
Correct |
7 ms |
5716 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
7 ms |
5828 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
6 ms |
5812 KB |
Output is correct |
| 9 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5844 KB |
Output is correct |
| 11 |
Correct |
7 ms |
5816 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5800 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5760 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5812 KB |
Output is correct |
| 18 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5736 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5824 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 23 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 24 |
Correct |
8 ms |
5812 KB |
Output is correct |
| 25 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 26 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 27 |
Correct |
7 ms |
5764 KB |
Output is correct |
| 28 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5816 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5808 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5768 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5824 KB |
Output is correct |
| 34 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 35 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 36 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 37 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 38 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 39 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5764 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 42 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 43 |
Correct |
8 ms |
5760 KB |
Output is correct |
| 44 |
Correct |
7 ms |
5812 KB |
Output is correct |
| 45 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 46 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 47 |
Correct |
7 ms |
5844 KB |
Output is correct |
| 48 |
Correct |
8 ms |
5820 KB |
Output is correct |
| 49 |
Correct |
6 ms |
5828 KB |
Output is correct |
| 50 |
Correct |
9 ms |
5816 KB |
Output is correct |
| 51 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 53 |
Correct |
9 ms |
5716 KB |
Output is correct |
| 54 |
Correct |
8 ms |
5812 KB |
Output is correct |
| 55 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 56 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 57 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 58 |
Correct |
6 ms |
5812 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 2 |
Correct |
9 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 4 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5816 KB |
Output is correct |
| 7 |
Runtime error |
25 ms |
17720 KB |
Execution killed with signal 11 |
| 8 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 3 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 4 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 5 |
Correct |
7 ms |
5828 KB |
Output is correct |
| 6 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 7 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 8 |
Correct |
6 ms |
5812 KB |
Output is correct |
| 9 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 10 |
Correct |
6 ms |
5844 KB |
Output is correct |
| 11 |
Correct |
7 ms |
5816 KB |
Output is correct |
| 12 |
Correct |
7 ms |
5800 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 14 |
Correct |
6 ms |
5760 KB |
Output is correct |
| 15 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 16 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5812 KB |
Output is correct |
| 18 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5736 KB |
Output is correct |
| 21 |
Correct |
9 ms |
5824 KB |
Output is correct |
| 22 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 23 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 24 |
Correct |
8 ms |
5812 KB |
Output is correct |
| 25 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 26 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 27 |
Correct |
7 ms |
5764 KB |
Output is correct |
| 28 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5816 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5808 KB |
Output is correct |
| 32 |
Correct |
6 ms |
5768 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5824 KB |
Output is correct |
| 34 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 35 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 36 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 37 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 38 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 39 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5764 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 42 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 43 |
Correct |
8 ms |
5760 KB |
Output is correct |
| 44 |
Correct |
7 ms |
5812 KB |
Output is correct |
| 45 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 46 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 47 |
Correct |
7 ms |
5844 KB |
Output is correct |
| 48 |
Correct |
8 ms |
5820 KB |
Output is correct |
| 49 |
Correct |
6 ms |
5828 KB |
Output is correct |
| 50 |
Correct |
9 ms |
5816 KB |
Output is correct |
| 51 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5716 KB |
Output is correct |
| 53 |
Correct |
9 ms |
5716 KB |
Output is correct |
| 54 |
Correct |
8 ms |
5812 KB |
Output is correct |
| 55 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 56 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 57 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 58 |
Correct |
6 ms |
5812 KB |
Output is correct |
| 59 |
Correct |
6 ms |
5824 KB |
Output is correct |
| 60 |
Correct |
9 ms |
5716 KB |
Output is correct |
| 61 |
Correct |
6 ms |
5716 KB |
Output is correct |
| 62 |
Correct |
8 ms |
5716 KB |
Output is correct |
| 63 |
Correct |
6 ms |
5820 KB |
Output is correct |
| 64 |
Correct |
6 ms |
5816 KB |
Output is correct |
| 65 |
Runtime error |
25 ms |
17720 KB |
Execution killed with signal 11 |
| 66 |
Halted |
0 ms |
0 KB |
- |
