#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,a,b) for(int i=a;i<=b;++i)
#define per(i,a,b) for(int i=a;i>=b;--i)
#define pb push_back
#define fi first
#define se second
const int MAXN = 1e5 + 10;
const int INF = 1e18+10;
int32_t main(){
ios::sync_with_stdio(0);cin.tie(0);
int n,m;cin >> n >> m;
int i = n-1, tmp = m;
while (i >= 0) {
int j;
for(j = tmp; j <= m+n-1; j++) {
if ((i&j)==i) break;
}
int nx = j + 1;
while (j >= tmp) {
cout << i-- << ' ' << j-- << '\n';
}
tmp = nx;
}
return 0;
}
