public class Solve {
//    There are N dice with 6 faces.
//    We want to know how many patterns are there, which make the total sum becomes target number.
//    For example,
//    There is 2 dice, target is 7.
//
//      1-6 6-1
//      2-5 5-2
//      3-4 4-3
//      6 cases
    public static void main(String[] args) {

        int d = 2;
        int f = 6;
        int target = 7;
        System.out.println(numRollsToTarget(d, f, target));//6
    }

    static
    public int numRollsToTarget(int d, int f, int target) {

    }
}