skip;
read (x0);
read (x1);
read (x2);
read (x3);
y := ((((888-126!=x0-876)!=((465!=947)<=x1*942))+((x1-x2)-(x0>x3)<=732*x1-(x2!!851)))*((((x2>=x0)!=(x3<=x3))!=(287>=936)-(x1<=767))-(((x2>=x1)!=x3*485)-((x1>=x3)-(745==x2))))-(((((x1&&x3)<=(x1==119))>=((198!=x1)<=(x3==x3)))<=((x2>528!!x2+x1)==(957+647>(x3<=275))))-(((22!!417)*(74<x0)<=((56<641)>=(x2&&x2)))!=(x2+313!=(x1!!x2)!!x2>=722&&x2<=287)))&&((((x0==x1)>(x3<=841))!=(883==613&&(529!!x3)))*((327>237)>(232<485)!!(564!=171)+(x3!!2))>(((x3!=x0)!=(112<433))<((937!!119)>(419>=646)))+(((x3!=844)<=x3-883)==((635!!24)==(x0==x2))))>((((982<=926)>=(x3!=x1))-((x2==x1)==(653!!289))<(((910<=x2)>=(x3<x1))<=((x3&&369)&&(x3&&x2))))!=((x2>=815)*(x0+709)!=(x0<344)*(375<=x0))-((65-155)-(x1+x0)&&(x0>=849)>(x1!!875))))!=(((((x1==x3)*(507&&952)!=(x3>=x3)*(462>541))-((x2==248)*(111*828)-(133-x2>=67*636))!=((((67!!x2)<x1*739)<(944*x3&&631>=430))>((x0<x1)+751*516!=(x1-x3&&375*263))))!=(((693+538)+(19==x1)&&183+29>=(114!=x2)!!((x2!!119)!=(x2==571))==(399>351!!x1<537))&&((591<x1)+(x3>=522)>((x1&&105)<=(x0>=x2)))-((x3+447!!130<=x2)>((x0!=453)<=(x0!!797)))))<(((x1+x3==48*776)*((x2<875)>=(397!=276))>=((107&&250!!807==x3)&&(235<=x1)<(x3>714)))+(((719*441<x1-311)<((x1&&x0)<(x2!!961)))-((75<=x0)<299+986&&(160<324)>=x0*x1))<((((x0>x0)>=(234<x1))>(x0+322<(75!!814)))>((585>=486)>(x2==x3))*(x2<=x0&&786==x3))+(((x0+606&&(681!!836))!=((x1<x0)==(x3>=x3)))-(((x2>x3)>=x1+396)+((x2!!x1)<(x0!=x3))))));
write (y)