Tavas and saddas wrong ans

#1

whats srong in this https://ide.codingblocks.com/#/s/23973
ques link https://hack.codingblocks.com/contests/c/452/819

#2

The order should be 4, 7, 44, 47, 74, so on.
Your order is 4, 7, 44, 74, 47

#3

ok but whats the problem in the code.
what mistake i have done

#4

Just change your ans=ans+(1<<i) to ans=ans+(1<<(len-i-1))

#5

passed all the test cases .thank u very much

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