program diaconeasa_iarasi_se_uita
type vector=array[0..99] of byte;  
 const sum:vector=(0,1,5,2,8,3,9,2,8,7,7,8,4,7,3,8,4,1,5,4,4,5,9,6,2,7,3,6,2,1,1,  
 2,8,1,7,2,8,5,9,8,8,9,3,0,6,1,7,0,6,5,5,6,2,5,1,6,2,9,3,2,2,3,7,4,0,5,1,4,0,9,  
 9,0,6,9,5,0,6,3,7,6,6,7,1,8,4,9,5,8,4,3,3,4,0,3,9,4,0,7,1,0);  
 var t,i:longint;     
 s,n:string;     
 x,cod:integer;  
 f,g:text;  
 l:byte;  
 begin  
 assign(f,'cifra.in');reset(f);  
 assign(g,'cifra.out');rewrite(g);  
 readln(f,t);  
 for i:=1 to t do begin  
 readln(f,n);  
 l:=length(n);     
 s:=copy(n,l-1,2);  
 val(s,x,cod);     
 if cod=0 then writeln(g,sum[x]);  
 end;     
 close(f);     
close(g);     
 end.