#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<queue>
#include<stack>
#include<set>
#include<algorithm>
#include<cstring>
#include<stdlib.h>
#include<math.h>
#include<map>
using namespace std;
#define ll long long
int main(){
    int n,m;
    while(cin>>n>>m,n+m){
        if(n>m) swap(n,m);
        int k=m-n;
        if(int(k*1.0*(1+sqrt(5))/2)==n&&m==n+k){
            cout<<0<<endl;
            continue;
        }
        cout<<1<<endl;
        int a,b;
        for(int i=1;i<=n;i++)
            if(n-i==int(k*1.0*(1+sqrt(5))/2)&&m-i==n-i+k) cout<<n-i<<" "<<m-i<<endl;
        for(int j=m;j>=0;j--){
            a=n,b=j;
            if(a>b) swap(a,b);
            k=b-a;
            if(a==int(k*1.0*(1+sqrt(5))/2)&&b==a+k) cout<<a<<" "<<b<<endl;
        }
    }
}