CodeForces 731A Night at the Museum

#pragma comment(linker, "/STACK:1024000000,1024000000")
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<vector>
#include<map>
#include<set>
#include<queue>
#include<stack>
#include<ctime>
#include<iostream>
using namespace std;
typedef long long LL;
const double pi=acos(-1.0),eps=1e-10;
void File()
{
    freopen("D:\\in.txt","r",stdin);
    freopen("D:\\out.txt","w",stdout);
}
template <class T>
inline void read(T &x)
{
    char c = getchar();
    x = 0;
    while(!isdigit(c)) c = getchar();
    while(isdigit(c))
    {
        x = x * 10 + c - ‘0‘;
        c = getchar();
    }
}

char s[1000];

int main()
{
    cin>>s; int ans=0,len=strlen(s);

    ans=ans+min(abs(s[0]-‘a‘),26-abs(s[0]-‘a‘));
    for(int i=0;i<len-1;i++)
    {
        ans=ans+min(abs(s[i]-s[i+1]),26-abs(s[i]-s[i+1]));
    }
    cout<<ans<<endl;
    return 0;
}