($y,$m,$d)=<>=~/\d+/g;
$d+=2;
$D=$d%((31,($y%4<1^$y%100<1^$y%400<1)+28,31,30,31,30,31,31,30,31,30,31)[$m-1]+1);
if($D<$d){
	$d=$D+1;
	if(++$m==13){
		$m=1;
		++$y
	}
}
printf"$y/%02d/%02d",$m,$d