int btn1=2;
int btn2=3;
int btn3=4;
int led=5;
int count=0;
int password=0;

void setup(){
pinMode (led,OUTPUT);
Serial.begin(9600);
pinMode (btn1,INPUT);
pinMode (btn1,INPUT);
pinMode (btn1,INPUT);
digitalWrite(btn1,HIGH);
digitalWrite(btn2,HIGH);
digitalWrite(btn3,HIGH);




}


void loop(){
int btn1state=digitalRead(btn1);
int btn2state=digitalRead(btn2);
int btn3state=digitalRead(btn3);

if(btn1state== 0){password = 10;}
if(btn2state== 0){password =password*10;}
if(btn3state== 0){password =password*5;}
if(password==2500){digitalWrite(led,HIGH);}
Serial.println(password);
delay(200);}