function tickets(peopleInLine){
  // ...
  
  var varyasMoney = {
    bills25:0,
    bills50:0,
    bills100:0
  };
  
  console.log(peopleInLine);
  
  for(var i= 0; i<peopleInLine.length; i++){
    if(peopleInLine[i] === 25){
      varyasMoney.bills25++;
    } else if (peopleInLine[i] === 50 ){
      varyasMoney.bills25--;
      varyasMoney.bills50++;
    } else { 
      varyasMoney.bill25--;
      varyasMoney.bills50--;
      varyasMoney.bills100++;
    }
    
    console.log('varyas25');
    console.log(varyasMoney.bills25);
    console.log('varyas50');
    console.log(varyasMoney.bills50);
    
    if(varyasMoney.bills25 < 0 || varyasMoney.bills50 < 0)
      return "NO"
  }
  
  return "YES"
}