Shortest Code Challenge

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Shortest Code Challenge is arranged from One Line Challenge.

Here is something of this challenge.

Python

One!

print("Hello, world!")

Two!

a = int(input()); b = int(input()); c = a + b; print(c)

Note: PEP-8 makes it clear that it's best not to write code like this.

C++

One!

#include<iostream>
using namespace std; int a, b, c; int main(){cin >> a >> b; c = a + b; cout << c << endl; return 0;}

Two!

#include<bits/stdc++.h>
using namespace std; int main(){for(int i = 0; i < 10; i++){printf("%d, ", i);} return 0;}