int a=1,b=2,c=3,d=4,e=5,f=6,g=7;
void setup() {
  // put your setup code here, to run once:
    pinMode(a,OUTPUT);
    pinMode(b,OUTPUT);
    pinMode(c,OUTPUT);
    pinMode(d,OUTPUT);
    pinMode(e,OUTPUT);
    pinMode(f,OUTPUT);
    pinMode(g,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  //0
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,1);
  delay(1000);
  //1
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
  //2
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
  //3
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
  //4
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //5
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //6
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //7
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
  //8
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //9
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //8
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //7
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
  //6
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //5
  digitalWrite(a,0);
  digitalWrite(b,1);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //4
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,0);
  digitalWrite(g,0);
  delay(1000);
  //3
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
  //2
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,1);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,1);
  digitalWrite(g,0);
  delay(1000);
  //1
  digitalWrite(a,1);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,1);
  digitalWrite(e,1);
  digitalWrite(f,1);
  digitalWrite(g,1);
  delay(1000);
  //0
  digitalWrite(a,0);
  digitalWrite(b,0);
  digitalWrite(c,0);
  digitalWrite(d,0);
  digitalWrite(e,0);
  digitalWrite(f,0);
  digitalWrite(g,1);
  delay(1000);
}