#include "iostream"
#include "string.h"
using namespace std;

struct p
{
       int x,y;
};

int square(p a,p b,p c)
{
      int r = (b.x-a.x)*(c.y-b.y)-(b.y-a.y)*(c.x-b.x);
      return r;
}

int main()
{
    freopen("in.txt","r",stdin);
    freopen("out.txt","w",stdout);
    int n;
    int move[10][2]={{0,0},{-1,-1},{0,-1},{1,-1},{-1,0},{0,0},{1,0},{-1,1},{0,1},{1,1}
        };
    scanf("%d",&n);
    char ch[1000100];
    while(n--)
    {
        scanf("%s",ch);
        int len = strlen(ch);
        int i,j,k;
        p a,b,c;
        a.x=0,a.y=0;
        c.x=a.x+move[ch[0]-'0'][0];
        c.y=a.y+move[ch[0]-'0'][1];
        
        __int64 s =0;
        for(i=1;i<len;i++)
        {
                   b=c;
                   c.x=b.x+move[ch[i]-'0'][0];
                   c.y=b.y+move[ch[i]-'0'][1];    
                   s+=square(a,b,c);                                          
        }
        if(s<0)s=-s;
        printf("%I64d",s/2);
        if(s%2)
        printf(".5");
        printf("\n");
        
    }
    return 0;
}