const lines = require('fs')
  .readFileSync('/dev/stdin', 'utf-8')
  .trim().split('\n').values();

const N = Number(lines.next().value);
const a = lines.next().value.split(' ').map(x => Number(x));

let max = a[a.length - 1] - a[0];
let min = Number.POSITIVE_INFINITY;

for (let i = 0; i < a.length - 1; i++) {
  min = Math.min(min, a[i + 1] - a[i]);
}

console.log(min);
console.log(max);