#include <iostream>
#include <tuple>
using namespace std;

const int N=4;

pair<int, int> mx[N*4];

void build(int x, int l, int r){
    if (l == r){
        cin >> mx[x].first;
        mx[x].second=l;
        return;
    }
    int mid= (l+r)/2;
    build(x<<1, l, mid);
    build (x<<1|1, mid+1, r);
    mx[x]=max(mx[x<<1], mx[x<<1|1]);
}

void update(int x,int l, int r,int p) {
    if(l==r){
        mx[x]={0, 0};
        return;
    }
    int mid=(l+r)/2;
    if(p<=mid)update(x<<1, l, mid, p);
    else update(x<<1|1, mid+1,r, p);
    mx[x]=max(mx[x<<1],mx[x<<1|1]);
}

pair<int, int> query (int x, int ql, int qr, int l, int r){
    if(ql==l&&qr==r) return mx[x];
    int mid=(l+r)/2;
    if(qr<=mid)return query(x<<1,ql,qr,l,mid);
    if(ql>mid)return query(x<<1|1, ql,qr,mid+1,r);
    return max(query(x<<1,ql,mid,l,mid),query(x<<1|1,mid+1,qr,mid+1,r));
}

int main(){
    build(1, 1, 3);
    int a,b,c,p;
    tie(a, p)=query (1, 1, 3, 1, 3);
    update(1, 1, 3, p);
    tie(b, p)=query (1, 1, 3, 1, 3);
    update(1, 1, 3, p);
    tie(c, p)=query (1, 1, 3, 1, 3);
    update(1, 1, 3, p);
    if(a==b&&b==c) {
        cout<< "3 "<<a<<endl;
    } else if(a==b){
        cout<<"2 "<<a<<" " <<c<<"\n";
    }else if(b-c==0){
        cout<<2<<" "<<a<<" "<<b<<'\n';
    }else {
        cout<<"1 " << a <<' ' <<b<<' '<<c<<endl;
    }
}