A.HappyNewYear2025模拟代码实现a,b=map(int,input().split())print((a+b)**2)B.9x9Sum模拟代码实现#include<bits/stdc++.h>#definerep1(i,n)for(inti=1;i<=(n);++i)usingnamespacestd;intmain(){intx;cin>>x;