#!/usr/bin/awk -f

BEGIN {
  FS = OFS = ";";
}

{
  if($2 > a[$1]) { a[$1] = $2 }
  else { a[$1] = $2 }
}

END {
  for(x in a) { print x, a[x] }
}

#!/usr/bin/awk -f

BEGIN {
  FS = OFS = ";";
}

{
  if($2 > a[$1]) { a[$1] = $2 }
  else { a[$1] = $2 }
}

END {
  for(x in a) { print x, a[x] }
}

#!/usr/bin/awk -f

BEGIN {
  FS = OFS = ";";
}

{
  if($2 > a[$1]) { a[$1] = $2 }
  else { a[$1] = $2 }
}

END {
  for(x in a) { print x, a[x] }
}