CodeForces 731A Night at the Museum

//这题不难，甚至可以称水题中的水题了，可我居然在这道题上，也不是一气呵成地完成，说明基础还是不够扎实，思维也不灵活 
#include <bits/stdc++.h>
using namespace std;
const int N = 105;
char word[N];
int getdistance (char a, char b)
{
	if (a < b) swap(a, b);
	int len1 = (abs)((int)a - (int)b);
//	int len2 = (abs)  ('z' - (int)a + (int)b - 'a' + 1);
	int len2 = 26 - a + b;
	return min(len1, len2);
}
int main()
{
	while (cin >> word)
	{
		int ans = 0;
		ans += getdistance(word[0], 'a');
		
		int len = strlen(word);
		for (int i = 1; i < len; i++)
		ans += getdistance(word[i - 1], word[i]);
		
		cout << ans << endl;
	}
	return 0;
}

//这种方法的思路比较清晰，值得借鉴
#include <bits/stdc++.h>
using namespace std;
const int N = 105;
char word[N];
int main()
{
	while (cin >> word)
	{
		int ans = 0;
		char now = 'a';
		
		int len = strlen(word);
		for (int i = 0; i < len; i++)
		{
			ans += min( abs(word[i] - now), min(26 + word[i] - now, 26 + now - word[i] ) );
			now = word[i];
		}
		
		cout << ans << endl;
	}
	return 0;
}