public static int birthday(List<Integer> s, int d, int m) {
// Write your code here
    int segments = 0;
    int n = s.size();
    for(int i = 0; i <= n-m; i++){
        int sum =0;
        for(int j = 0; j < m ; j++){
            sum = sum + s.get(i + j);
        }
        if(sum == d){
            segments++;
        }
    }
    return segments;
}