Conditional print based on array content in bash or awk - bash

Question

I have an input file with following contents:
SS SC
a 1
b 2
d 5
f 7
I have an input bash array as follow:
echo "${input[*]}"
a b c d e f
I need to create an output to:
1. print the all elements of the array in 1st column
2. In second column, I need to print 0 or 1, based on the presence of the element.
To explain this, in the input array called input, I have a,b,c,d,e,f. Now a is present in input file, so the output should be a 1, whereas c is missing in the input file, so the output should be c 0 in the output.
Eg: Expected result:
SS RESULT
a 1
b 1
c 0
d 1
e 0
f 1
Tried, to split the bash array in an attempt to iterate over it, but its printing for each line(the way awk works), its getting too difficult to handle.
awk -v par="${input[*]}" 'BEGIN{ n = split(par, a, " ")} {for(i=0;i<=n;i++){printf "%s\n", a[i]}}' input
I am able(missing header) to do this with bash for loop and some grep: But hoping awk would be shorter, as I need to put this in a yaml file so need to keep it short.
for item in ${input[#]};do
if ! grep -qE "^${item}" input ;then
echo "$item 0";
else
echo "$item 1";
fi;
done
a 1
b 1
c 0
d 1
e 0
f 1

Answer 1

Using awk to store the values in the first column of the file in an associative array and then see if the elements of the array exist in it:
#!/usr/bin/env bash
input=(a b c d e f)
awk 'BEGIN { print "SS", "RESULT" }
FNR == NR { vals[$1] = 1; next }
{ print $0, $0 in vals }
' input.txt <(printf "%s\n" "${input[#]}")
Or doing the the same thing in pure bash:
#!/usr/bin/env bash
input=(a b c d e f)
declare -A vals
while read -r v _; do
vals[$v]=1
done < input.txt
echo "SS RESULT"
for v in "${input[#]}"; do
if [[ -v vals[$v] ]]; then
printf "%s 1\n" "$v"
else
printf "%s 0\n" "$v"
fi
done

Answer 2

Following code snippet demonstrates how it can be achieved in perl
use strict;
use warnings;
use feature 'say';
my #array = qw/a b c d e f/;
my %seen;
$seen{(split)[0]}++ while <DATA>;
say 'SS RESULT';
say $_, ' ', $seen{$_} ? 1 : 0 for #array;
__DATA__
SS SC
a 1
b 2
d 5
f 7
Output
SS RESULT
a 1
b 1
c 0
d 1
e 0
f 1