字符串 + 数字运算

#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
int c_to_i(char k){
	if(k=='0') return 10;
	else return int(k-'0');
}
int main(){
	int n;
	cin>>n;
	for(int i=1;i<=n;i++){
		string S;
		cin>>S;
		int cnt=1;
		int mind=c_to_i(S[0]);
		cnt+=mind-1;
		for(int j=1;j<4;j++){
			int por=c_to_i(S[j]);
			cnt+=abs(mind-por);
			cnt++;
			mind=por;
		}
		cout<<cnt<<endl;
	}
	return 0;
}