Concatenation_Of_Consecutive_Numbers.cpp

class Solution {
public:
    int concatenatedBinary(int n) {
        long long int val=0;
        int i=1;
        while(i<=n)
        {
            val=((val << (1 + int(log2(i)))) % 1000000007 +i) % 1000000007;
            i ++ ;
        }
        return val;
    }
};