char i[81],*j,a,p;int g(){int c=*j++,d,o;return c>81?p%3:c>80?p/3%3:c>79?p/9:c
>47?c-48:c>44?2-g():(c=g(),o=*j++,d=g(),++j,o-43?(c<d?c:d):c>d?c:d);}main(){
for(;scanf("%s",i),*i-46;printf("%d\n",a))for(p=a=0;j=i,p-27;++p)a+=g()/2;}