int a=0;
int b=1;
int c=4;
int d=5;
int e=6;
int f=2;
int g=3;
int a1=28;
int b1=27;
int c1=26;
int d1=22;
int e1=21;
int f1=20;
int g1=19;

void setup()
{
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
}

void zero()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  delay(1000); 
}

void one()
{
  digitalWrite(a, LOW);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  delay(1000);
}

void two()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, LOW);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, LOW);
  digitalWrite(g, HIGH);
  delay(1000);
}

void three()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, HIGH);
  delay(1000);
}

void four()
{
  digitalWrite(a, LOW);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  delay(1000);
}

void five()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, LOW);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, LOW);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  delay(1000);
}

void six()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, LOW);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  delay(1000);
}

void seven()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, LOW);
  digitalWrite(e, LOW);
  digitalWrite(f, LOW);
  digitalWrite(g, LOW);
  delay(1000);
}

void eight()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  delay(1000);
}

void nine()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, LOW);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  delay(1000);
}

void zero1()
{
  digitalWrite(a1, HIGH);
  digitalWrite(b1, HIGH);
  digitalWrite(c1, HIGH);
  digitalWrite(d1, HIGH);
  digitalWrite(e1, HIGH);
  digitalWrite(f1, HIGH);
  digitalWrite(g1, LOW);
  delay(1000);
}

 void one1()
{
  digitalWrite(a1, LOW);
  digitalWrite(b1, HIGH);
  digitalWrite(c1, HIGH);
  digitalWrite(d1, LOW);
  digitalWrite(e1, LOW);
  digitalWrite(f1, LOW);
  digitalWrite(g1, LOW);
  delay(1000);
}

 
void ten()
{
  digitalWrite(a1, LOW);
  digitalWrite(b1, HIGH);
  digitalWrite(c1, HIGH);
  digitalWrite(d1, LOW);
  digitalWrite(e1, LOW);
  digitalWrite(f1, LOW);
  digitalWrite(g1, LOW);
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  delay(1000);

}

void twenty()
{
  digitalWrite(a1, HIGH);
  digitalWrite(b1, HIGH);
  digitalWrite(c1, LOW);
  digitalWrite(d1, HIGH);
  digitalWrite(e1, HIGH);
  digitalWrite(f1, LOW);
  digitalWrite(g1, HIGH);
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, LOW);
  delay(1000);

}
void loop()
{
  zero1();
  zero();
  one();
  two();
  three();
  four();
  five();
  six();
  seven();
  eight();
  nine();
  ten();
  one1();
  one();
  two();
  three();
  four();
  five();
  six();
  seven();
  eight();
  nine();
  twenty();

}