非数组解发

#include<bits/stdc++.h>
using namespace std;
int main(){
int n, m, a, b;
cin>>n>>m;
for(int j = 1;j<=n;j++){
if(j > 1){
cout<<endl;
}

    for(int i = 1;i <= m;i++){
    cin>>b;
    cout<<b<<" ";
    }
}

}