#include <bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
const int MOD = 1000000007;
const int INF = 1e18;
const int N = 3e5 + 10;
//确定开头所在位置,依次计算差值和
void solve() {
string s,t;
cin>>s>>t;
int s0=s.size(),t0=t.size();
vector<int>a;
for(int i=0;i<t0-s0;i++){
int ss=0;
for(int j=0;j<s0;j++){
ss+=min(abs(s[j]-t[j+i]),26-abs(s[j]-t[j+i]));
}
a.push_back(ss);
}
sort(a.begin(),a.end());
cout<<a[0]<<endl;
return;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int T = 1;
// cin >> T;
while (T--)
solve();
return 0;
}