#include<bits/stdc++.h>
using namespace std;
int x,y,ans;
signed main(){
	cin>>x>>y;
	for(int i=1;i<=y;i++){
		ans++;
		cout<<setw(2)<<i<<" ";
		if(ans%x==0)cout<<"\n";
	}
	return 0;
}

C++ :

#include <bits/stdc++.h>
using namespace std;
int main(){
	//freopen("pfz.in","r",stdin);
	//freopen("pfz.out","w",stdout);
	int m,n;
	cin>>m>>n;
	for(int i=1;i<=n;i++){
		cout.width(2);
		cout<<i<<" "; 
		if(i%m==0){
			cout<<endl; 
		}	
	}
	return 0;
	fclose(stdin);
	fclose(stdout);
}

Python :

# coding=utf-8
x=input().split()
a=int(x[0])
b=int(x[1])
ans=0
for i in range(1,b+1):
    ans=ans+1
    ans=ans%a
    if i<10:
        print(" ",end='')
    print(i,end=' ')
    if ans==0:
        print()