#include<bits/stdc++.h>
using namespace std;
long long x[5],y[5];
struct L{
    int x1,x2,y1,y2;
};
vector<L>ans;
void Link(int x1,int y1,int x2,int y2){
    if(x1==x2&&y1==y2)return;
    ans.push_back((L){x1,x2,y1,y2});
}
int main(){
    scanf("%lld %lld %lld %lld %lld %lld",&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
    if(x[1]>x[2])swap(x[1],x[2]),swap(y[1],y[2]);
    if(x[1]>x[3])swap(x[1],x[3]),swap(y[1],y[3]);
    if(x[2]>x[3])swap(x[2],x[3]),swap(y[2],y[3]);
    if(y[2]>y[1]&&y[2]>y[3]){
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[2],x[2],min(y[1],y[3]));
    }else if(y[2]<y[1]&&y[2]<y[3]){
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[2],x[2],max(y[1],y[3]));
    }else {
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[1],x[2],y[3]);
    }
    printf("%d\n",(int)ans.size());
    for(auto t:ans){
        printf("%d %d %d %d\n",t.x1,t.y1,t.x2,t.y2);
    }
}#include<bits/stdc++.h>
using namespace std;
long long x[5],y[5];
struct L{
    int x1,x2,y1,y2;
};
vector<L>ans;
void Link(int x1,int y1,int x2,int y2){
    if(x1==x2&&y1==y2)return;
    ans.push_back((L){x1,x2,y1,y2});
}
int main(){
    scanf("%lld %lld %lld %lld %lld %lld",&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
    if(x[1]>x[2])swap(x[1],x[2]),swap(y[1],y[2]);
    if(x[1]>x[3])swap(x[1],x[3]),swap(y[1],y[3]);
    if(x[2]>x[3])swap(x[2],x[3]),swap(y[2],y[3]);
    if(y[2]>y[1]&&y[2]>y[3]){
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[2],x[2],min(y[1],y[3]));
    }else if(y[2]<y[1]&&y[2]<y[3]){
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[2],x[2],max(y[1],y[3]));
    }else {
        Link(x[1],y[1],x[2],y[1]),Link(x[3],y[3],x[2],y[3]);
        Link(x[2],y[1],x[2],y[3]);
    }
    printf("%d\n",(int)ans.size());
    for(auto t:ans){
        printf("%d %d %d %d\n",t.x1,t.y1,t.x2,t.y2);
    }
}

answer.code:31:2: error: stray ‘#’ in program
   31 | }#include<bits/stdc++.h>
      |  ^
answer.code:31:3: error: ‘include’ does not name a type
   31 | }#include<bits/stdc++.h>
      |   ^~~~~~~
answer.code:33:11: error: redefinition of ‘long long int x [5]’
   33 | long long x[5],y[5];
      |           ^
answer.code:3:11: note: ‘long long int x [5]’ previously declared here
    3 | long long x[5],y[5];
      |           ^
answer.code:33:16: error: redefinition of ‘long long int y [5]’
   33 | long long x[5],y[5];
      |                ^
answer.code:3:16: note: ‘long long int y [5]’ previously declared here
    3 | long long x[5],y[5];
      |                ^
answer.code:34:8: error: redefinition of ‘struct L’
   34 | struct L{
      |        ^
answer.code:4:8: note: previous definition of ‘struct L’
    4 | struct L{
      |        ^
answer.code:37:10: error: redefinition of ‘std::vector<L> ans’
   37 | vector<L>ans;
      |          ^~~
answer.code:7:10: note: ‘std::vector<L> ans’ previously declared here
    7 | vector<L>ans;
      |          ^~~
answer.code:38:6: error: redefinition of ‘void Link(int, int, int, int)’
   38 | void Link(int x1,int y1,int x2,int y2){
      |      ^~~~
answer.code:8:6: note: ‘void Link(int, int, int, int)’ previously defined here
    8 | void Link(int x1,int y1,int x2,int y2){
      |      ^~~~
answer.code:42:5: error: redefinition of ‘int main()’
   42 | int main(){
      |     ^~~~
answer.code:12:5: note: ‘int main()’ previously defined here
   12 | int main(){
      |     ^~~~
answer.code: In function ‘int main()’:
answer.code:13:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   13 |     scanf("%lld %lld %lld %lld %lld %lld",&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
answer.code: In function ‘int main()’:
answer.code:43:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   43 |     scanf("%lld %lld %lld %lld %lld %lld",&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~