Stores the base 26 digits after addition
let a1 = new Array ( N + 1 ) ; for ( let i = 0 ; i < N ; i ++ ) { a1 [ i + 1 ] = S [ i ] . charCodeAt ( 0 ) - " " . charCodeAt ( 0 ) + T [ i ] . charCodeAt ( 0 ) - " " . charCodeAt ( 0 ) ; }