#### Task

`The input of the program is the data stream — a sequence of integers that ends in zero (zero is not included in the sequence). You need to find the sum of the elements of this sequence.`
##### Solving algorithm

sum=0
input x // enter the first number
while x != 0 // the input end sign is set in the condition,
nc // that is, until you enter zero
sum = sum + x // you can do something with the original number.
// You can add a number check for some condition, etc.
input x // enter the next number
kts
print sum //result output