#include<iostream.h>
#include<conio.h>
#include<stdio.h>


int i,j;
int flag=0;
char str[7];
char b[2][8];
char a[29][9]={
        "zero","one","two","three","four", "five","six",
        "seven","eight","nine","ten","eleven","twelve",
        "thirteen","fourteen","fifteen","sixteen",
        "seventeen","eighteen","nineteen","twenty",
        "thirty","fourty","fifty","sixty","seventy",
        "eighty","ninety","hundred"
        } ;

void enter();
void split();
void compare();


int main()
{
clrscr();

    enter();
    split();
    compare();



        return 0;
        }
void enter()
{
    cout<<"enter any string";
        for(i=0;i<7;i++)
        {
        cin>>str[i];
        }
        fflush(stdin);
}

void split()
{
    i=0;
    j=0;
    again:
    do
    {
      j=0;
      b[i][j]=str[j];

            j++;
    }
    while (str[j-1]!=32);

    if(str[j]==32)
    {
    i=i+1;
    goto again;

    }
}
void compare()
{  i=0;
j=0;
do
{
if(a[i][j]==b[i][j])
flag=0;
else
flag=1;
j++;
}
while(a[i][j-1]!=32);
if(flag==0)
cout<<i;
}