The problems in this module exist to prove one thing: your code can read input and produce output the judge accepts. No algorithms yet. If you can echo a number back, you have cleared the only real barrier beginners get stuck on — the plumbing.
The starter already reads for you. For "echo an integer" it hands your solve the value and
prints whatever you return:
def solve(x):
return x # the answer just is x
function solve(x) {
return x;
}
Submit that and you get Accepted. It feels almost too small, and that is the point: you have confirmed the read -> compute -> print loop works end to end before any real thinking is required. Every later problem reuses this exact loop.