codeforces581D

Three Logos

Three companies decided to order a billboard with pictures of their logos. A billboard is a big square board. A logo of each company is a rectangle of a non-zero area.

Advertisers will put up the ad only if it is possible to place all three logos on the billboard so that they do not overlap and the billboard has no empty space left. When you put a logo on the billboard, you should rotate it so that the sides were parallel to the sides of the billboard.

Your task is to determine if it is possible to put the logos of all the three companies on some square billboard without breaking any of the described rules.

Input

The first line of the input contains six positive integers x₁, y₁, x₂, y₂, x₃, y₃ (1 ≤ x₁, y₁, x₂, y₂, x₃, y₃ ≤ 100), where x_i and y_i determine the length and width of the logo of the i-th company respectively.

Output

If it is impossible to place all the three logos on a square shield, print a single integer "-1" (without the quotes).

If it is possible, print in the first line the length of a side of square n, where you can place all the three logos. Each of the next n lines should contain nuppercase English letters "A", "B" or "C". The sets of the same letters should form solid rectangles, provided that:

the sizes of the rectangle composed from letters "A" should be equal to the sizes of the logo of the first company,
the sizes of the rectangle composed from letters "B" should be equal to the sizes of the logo of the second company,
the sizes of the rectangle composed from letters "C" should be equal to the sizes of the logo of the third company,

Note that the logos of the companies can be rotated for printing on the billboard. The billboard mustn't have any empty space. If a square billboard can be filled with the logos in multiple ways, you are allowed to print any of them.

See the samples to better understand the statement.

Examples

Input

5 1 2 5 5 2

Output

5
AAAAA
BBBBB
BBBBB
CCCCC
CCCCC

Input

4 4 2 6 4 2

Output

6
BBBBBB
BBBBBB
AAAACC
AAAACC
AAAACC
AAAACC

sol：只有三个标记当然可以暴力模拟，就是判-1略微蛋疼

#include <bits/stdc++.h>

using namespace std;

typedef int ll;

inline ll read()

{

    ll s=;

    bool f=;

    char ch=' ';

    while(!isdigit(ch))

    {

        f|=(ch=='-'); ch=getchar();

    }

    while(isdigit(ch))

    {

        s=(s<<)+(s<<)+(ch^); ch=getchar();

    }

    return (f)?(-s):(s);

}

#define R(x) x=read()

inline void write(ll x)

{

    if(x<)

    {

        putchar('-'); x=-x;

    }

    if(x<)

    {

        putchar(x+'');    return;

    }

    write(x/);

    putchar((x%)+'');

    return;

}

#define W(x) write(x),putchar(' ')

#define Wl(x) write(x),putchar('\n')

const int N=;

int n=,n1,n2,n3,m1,m2,m3;

char Map[N][N];

inline void OutPut()

{

    Wl(n);

    int i,j;

    for(i=;i<=n;i++)

    {

        for(j=;j<=n;j++) putchar(Map[i][j]);

        putchar('\n');

    }

}

#define NO {puts("-1"); exit(0);}

inline void Judge()

{

    if(n*n!=(n1*m1+n2*m2+n3*m3)) NO

    if(n1==n&&n2==n&&n3==n) if(m1+m2+m3!=n) NO

    int i,j,c1=,c2=,c3=;

    for(i=;i<=n;i++)

    {

        for(j=;j<=n;j++)

        {

            if(Map[i][j]=='A') c1++;

            else if(Map[i][j]=='B') c2++;

            else if(Map[i][j]=='C') c3++;

        }

    }

    if((c1!=n1*m1)||(c2!=n2*m2)||(c3!=n3*m3)) NO

}

int main()

{

    int i,j,Lastn,Lastm;

    R(n1); R(m1); R(n2); R(m2); R(n3); R(m3);

    if(n1<m1) swap(n1,m1); if(n2<m2) swap(n2,m2); if(n3<m3) swap(n3,m3);

    n=max(n1,max(m1,max(n2,max(m2,max(n3,m3)))));

    memset(Map,' ',sizeof Map);

    if(n1==n)

    {

        for(i=;i<=n1;i++) for(j=;j<=m1;j++) Map[i][j]='A';

        if(n2==n)

        {

            for(i=;i<=n;i++) for(j=m1+;j<=m1+m2;j++) Map[i][j]='B';

        }

        else

        {

            if(n2+m1==n) swap(n2,m2);

            for(i=;i<=n2;i++) for(j=m1+;j<=n;j++) Map[i][j]='B';

        }

        for(i=;i<=n;i++)

        {

            for(j=;j<=n;j++)

            {

                if(!isupper(Map[i][j])) Map[i][j]='C';

            }

        }

    }

    else if(n2==n)

    {

        for(i=;i<=n2;i++) for(j=;j<=m2;j++) Map[i][j]='B';

        if(n1==n)

        {

            for(i=;i<=n;i++) for(j=m2+;j<=m2+m1;j++) Map[i][j]='A';

        }

        else

        {

            if(n1+m2==n) swap(n1,m1);

            for(i=;i<=n1;i++) for(j=m2+;j<=n;j++) Map[i][j]='A';

        }

        for(i=;i<=n;i++)

        {

            for(j=;j<=n;j++)

            {

                if(!isupper(Map[i][j])) Map[i][j]='C';

            }

        }

    }

    else

    {

        for(i=;i<=n3;i++) for(j=;j<=m3;j++) Map[i][j]='C';

        if(n1==n)

        {

            for(i=;i<=n;i++) for(j=m3+;j<=m3+m1;j++) Map[i][j]='A';

        }

        else

        {

            if(n1+m3==n) swap(n1,m1);

            for(i=;i<=n1;i++) for(j=m3+;j<=n;j++) Map[i][j]='A';

        }

        for(i=;i<=n;i++)

        {

            for(j=;j<=n;j++)

            {

                if(!isupper(Map[i][j])) Map[i][j]='B';

            }

        }

    }

    Judge();

    OutPut();

    return ;

}

/*

Input

5 1 5 2 5 2

Output

5

AAAAA

BBBBB

BBBBB

CCCCC

CCCCC

Input

4 4 2 6 4 2

Output

6

BBBBBB

BBBBBB

AAAACC

AAAACC

AAAACC

AAAACC

input

100 100 100 100 100 100

output

-1

*/

Three Logos

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