sorry,题目有问题，所以下面是正解：
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
int main(){
long long a,b,c,d,e,f,g,h,i,j,k,l,m;
cin>>a>>b>>c>>d>>e>>f>>g>>h>>i>>j>>k>>l>>m;
cout<<a<<endl<<b<<" "<<c<<" "<<d<<endl<<e<<" "<<f<<" "<<g<<endl<<h<<" "<<i<<" "<<j<<endl<<k<<" "<<l<<" "<<m;
return 0;
}
