let input = [
    '4',
    '12',
    '23',
    '34',
    '45'
];

let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);

let n = Number(gets())
let space = ''
let space1 = ''
let sum = 0
let index = []
for (let i = 1; i <= n; i++) {
    let number = gets()
    index.push(number)
}
for (let i = 0; i < n-1; i++) {
    let num1 = Number(index[i] % 10)
    let num2 = parseInt(index[i + 1] / 10)
    space += num1 + ''
    space +=num2 + ' '
}
for (let i = 0; i < n-1; i++) {
    let num1 = Number(index[i] % 10)
    let num2 = parseInt(index[i + 1] / 10)
    let numstart = parseInt(index[i] / 10)
    let numend = Number(index[i + 1] % 10)
    sum = num1+num2
    space1 += numstart
    space1 += sum + ''
    space1 += numend + ' '
}

print(space)
print(space1)