题解 | #尼科彻斯定理#

找规律题

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int m= sc.nextInt();
            for(int i=1;i<=m;i++){
                System.out.print(m*m-m-1+i*2);
                if(i!=m){
                    System.out.print("+");
                }
            }
            System.out.println();
        }
    }
    
}