#include<iostream>#include<string>using namespace std;int c[27][27]={0};void play_table(void){for(int i=0;i<=26;i++)for(int j=0;j<=i;j++)if(!j || i==j)c[i][j]=1;elsec[i][j]=c[i-1][j-1]+c[i-1][j];c[0][0]=0;return;}int main(int i,int j){play_table();char str[6];while(cin>>str){int len=strlen(str);bool flag=false;for(i=1;i<len;i++)if(str[i-1]>=str[i]){cout<<0<<endl;flag=true; } if(!flag){int sum=0; for(i=1;i<len;i++)sum+=c[26][i]; for(i=0;i<len;i++) {char ch= (!i)?'a':str[i-1]+1; while(ch<=str[i]-1) {sum+=c['z'-ch][len-1-i]; ch++; }}cout<<++sum<<endl; }}return 0;}
