#include<iostream>
#include<vector>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;
string s;
vector<int>ov;
inline void oper(int x)
{
if(x!=(int)s.size())
ov.eb((int)s.size()-x);
string s1=s.substr(0,x);
string s2=s.substr(x,(int)s.size()-x);
reverse(all(s2));
s=s2+s1;
return;
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n,m;
cin>>n>>m;
string t;
cin>>s>>t;
{
string s1=s,t1=t;
sort(all(s1));
sort(all(t1));
if(s1!=t1)
return cout<<-1<<endl,0;
}
for(int i=0;i+1<n;i+=2)
{
int p1=-1;
int p2=-1;
for(int j=n-i-1;j>=0;j--)
{
if(s[j]==t[i])
{
p1=j;
break;
}
}
for(int j=n-i-1;j>=0;j--)
{
if(j!=p1&&s[j]==t[i+1])
{
p2=j;
break;
}
}
if(p1<p2)
{
int s1=p1;
int s2=p2-p1-1;
int s3=n-i-1-p2;
int s4=i;
oper(s1+1+s2+1);
oper(s4+s3+1);
oper(1+s2);
oper(s1+s3+s4+1+1);
}
else
{
int s1=p2;
int s2=p1-p2-1;
int s3=n-i-1-p1;
int s4=i;
oper(s1+1);
oper(s4+s3);
oper(1+s1+s2);
oper(s3+s4+1+1);
}
}
if(n%2==1)
{
oper(0);
oper(n-1);
oper(0);
}
cout<<ov.size()<<endl;
for(int&t:ov)
cout<<t<<' ';
cout<<endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
256 KB |
[n = 1, m = 10000], OK, 3 operations |
2 |
Correct |
0 ms |
384 KB |
[n = 2, m = 10000], OK, 3 operations |
3 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
4 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
5 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
6 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK: No solution |
7 |
Correct |
0 ms |
384 KB |
[n = 8, m = 10000], OK, 15 operations |
8 |
Incorrect |
1 ms |
384 KB |
S is not equal after all operations: S = pgujnxpk, T = kgujnxpp |