public static int birthday(List<Integer> s, int d, int m) {
        int count = 0;
        for(int i = 0; i < s.size()-m+1; i++) {
            
            int j = 0;
            int sum = 0;
            while(j < m) {
                sum = sum + s.get(j+i);
                if (sum > d) {
                    break;
                } else if (sum == d && j == m - 1) {
                    count++;
                }
                j++;
            }
        }
        return count;
    }