Can anybody help me with this beginner Competitive programming problem in C?

Start you ans with value 1 now every time you get magnet check if the first bit of this magnet is equal to last bit of previous magnet if so then increacase ans by 1

Iterate over the list of values. At each iteration compare the ith value with (i+1)th value.. If, they are not equal, then increment count by 1. Finally, print the count value.

counter=0; for(int i=0;i<n-1;i++){//n= number of dominoes if(arr[i]%10!=arr[i+1]%10){ counter++;//number of groups } }

Hey Sandesh Adhikari I'm totally agree with Martin Taylor , I recomment to learn C++ !