public static int birthday(List<Integer> s, int d, int m) {
    // Write your code here
    //initialize the variable count to keep track of # of possible ways to divide the chocolate
    int count = 0;
    //number of ways to take m adjacent numbers in size s chocolate
    int combinations = s.size()-m+1;
    //for each possible combination
    for (int i=0; i< combinations; i++){
        int sum =0;
        for(int j=0; j<m; j++){
            //sum together m adjacent squares
            sum+=s.get(i+j);
        }
        //increment count if sum equals to birthday d
        if (sum==d){
            count++;
        }
    }
    return count;
    }