Sum of all palindromic numbers lying in the range [ L , R ] for Q queries | pref [ ] array to precompute the sum of all palindromic number ; Function that return number num if num is palindromic else return 0 ; Convert num to string ; Function to precompute the sum of all palindrome numbers upto 100000 ; checkPalindrome ( ) return the number i if i is palindromic else return 0 ; Function to print the sum for each query ; Function to prsum of all palindromic numbers between [ L , R ] ; Function that pre computes the sum of all palindromic numbers ; Iterate over all Queries to print the sum ; Queries ; Function that print the the sum of all palindromic number in Range [ L , R ]
pref = [ 0 ] * 100001 NEW_LINE def checkPalindrome ( num ) : NEW_LINE INDENT strr = str ( num ) NEW_LINE l = 0 NEW_LINE r = len ( strr ) - 1 NEW_LINE while ( l < r ) : NEW_LINE INDENT if ( strr [ l ] != strr [ r ] ) : NEW_LINE INDENT return 0 NEW_LINE DEDENT l += 1 NEW_LINE r -= 1 NEW_LINE DEDENT return num NEW_LINE DEDENT def preCompute ( ) : NEW_LINE INDENT for i in range ( 1 , 100001 ) : NEW_LINE INDENT pref [ i ] = pref [ i - 1 ] + checkPalindrome ( i ) NEW_LINE DEDENT DEDENT def printSum ( L , R ) : NEW_LINE INDENT print ( pref [ R ] - pref [ L - 1 ] ) NEW_LINE DEDENT def printSumPalindromic ( arr , Q ) : NEW_LINE INDENT preCompute ( ) NEW_LINE for i in range ( Q ) : NEW_LINE INDENT printSum ( arr [ i ] [ 0 ] , arr [ i ] [ 1 ] ) NEW_LINE DEDENT DEDENT Q = 2 NEW_LINE arr = [ [ 10 , 13 ] , [ 12 , 21 ] ] NEW_LINE printSumPalindromic ( arr , Q ) NEW_LINE