int a1=2;
int b1=3;
int c1=13;
int d1=14;
int e1=15;
int f1=1;
int g1=0;
int a2=27;
int b2=28;
int c2=16;
int d2=17;
int e2=18;
int f2=26;
int g2=22;

void setup()
{
pinMode(a1, OUTPUT);
pinMode(b1, OUTPUT);
pinMode(c1, OUTPUT);
pinMode(d1, OUTPUT);
pinMode(e1, OUTPUT);
pinMode(f1, OUTPUT);
pinMode(g1, OUTPUT);
pinMode(a2, OUTPUT);
pinMode(b2, OUTPUT);
pinMode(c2, OUTPUT);
pinMode(d2, OUTPUT);
pinMode(e2, OUTPUT);
pinMode(f2, OUTPUT);
pinMode(g2, OUTPUT);
} 
void zero()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,LOW);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void one()
{
digitalWrite(a1,LOW);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,LOW);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}

void two()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,LOW);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,LOW);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void three()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void four()
{
digitalWrite(a1,LOW);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void five()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,LOW);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void six()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,LOW);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void seven()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,LOW);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void eight()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void nine()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,HIGH);
digitalWrite(g2,LOW);
delay(1000);
}
void ten()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,LOW);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void eleven()
{
digitalWrite(a1,LOW);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,LOW);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}

void twelve()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,LOW);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,LOW);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void thirteen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void fourteen()
{
digitalWrite(a1,LOW);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void fifteen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,LOW);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void sixteen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,LOW);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void seventeen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,LOW);
digitalWrite(g1,LOW);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void eighteen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void nineteen()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,LOW);
digitalWrite(e1,LOW);
digitalWrite(f1,HIGH);
digitalWrite(g1,HIGH);
digitalWrite(a2,LOW);
digitalWrite(b2,HIGH);
digitalWrite(c2,HIGH);
digitalWrite(d2,LOW);
digitalWrite(e2,LOW);
digitalWrite(f2,LOW);
digitalWrite(g2,LOW);
delay(1000);
}
void twenty()
{
digitalWrite(a1,HIGH);
digitalWrite(b1,HIGH);
digitalWrite(c1,HIGH);
digitalWrite(d1,HIGH);
digitalWrite(e1,HIGH);
digitalWrite(f1,HIGH);
digitalWrite(g1,LOW);
digitalWrite(a2,HIGH);
digitalWrite(b2,HIGH);
digitalWrite(c2,LOW);
digitalWrite(d2,HIGH);
digitalWrite(e2,HIGH);
digitalWrite(f2,LOW);
digitalWrite(g2,HIGH);
delay(1000);
}
void loop()
{
zero();
one();
two();
three();
four();
five();
six();
seven();
eight();
nine();
ten();
eleven();
twelve();
thirteen();
fourteen();
fifteen();
sixteen();
seventeen();
eighteen();
nineteen();
twenty();
}