challenge.present.js

module.exports = {
	generate: len => {
		const sum = 1606483;
		let result = [];
		let answer = 0;		
		
		if (isNaN(len)) len = 1;
		
		//result = presents.slice(0, len);
		//answer = '???';
		for (let i=0; i<len; i++) {
			result = result.concat(presents);
			answer += sum;
		}
		
		console.log("Generated " + formatNumber(result.length) + " elements and the answer is " + answer + "...");	
		return result;
	}
};

const presents = [
'20x3x11',
'15x27x5',
'6x29x7',
'30x15x9',
'19x29x21',
'10x4x15',
'1x26x4',
'1x5x18',
'10x15x23',
'10x14x20',
'3x5x18',
'29x23x30',
'7x4x10',
'22x24x29',
'30x1x2',
'19x2x5',
'11x9x22',
'23x15x10',
'11x11x10',
'30x28x5',
'22x5x4',
'6x26x20',
'16x12x30',
'10x20x5',
'25x14x24',
'16x17x22',
'11x28x26',
'1x11x10',
'1x24x15',
'13x17x21',
'30x3x13',
'20x25x17',
'22x12x5',
'22x20x24',
'9x2x14',
'6x18x8',
'27x28x24',
'11x17x1',
'1x4x12',
'5x20x13',
'24x23x23',
'22x1x25',
'18x19x5',
'5x23x13',
'8x16x4',
'20x21x9',
'1x7x11',
'8x30x17',
'3x30x9',
'6x16x18',
'22x25x27',
'9x20x26',
'16x21x23',
'5x24x17',
'15x17x15',
'26x15x10',
'22x16x3',
'20x24x24',
'8x18x10',
'23x19x16',
'1x21x24',
'23x23x9',
'14x20x6',
'25x5x5',
'16x3x1',
'29x29x20',
'11x4x26',
'10x23x24',
'29x25x16',
'27x27x22',
'9x7x22',
'6x21x18',
'25x11x19',
'14x13x3',
'15x28x17',
'14x3x12',
'29x8x19',
'30x14x20',
'20x23x4',
'8x16x5',
'4x11x18',
'20x8x24',
'21x13x21',
'14x26x29',
'27x4x17',
'27x4x25',
'5x28x6',
'23x24x11',
'29x22x5',
'30x20x6',
'23x2x10',
'11x4x7',
'27x23x6',
'10x20x19',
'8x20x22',
'5x29x22',
'16x13x2',
'2x11x14',
'6x12x4',
'3x13x6',
'16x5x18',
'25x3x28',
'21x1x5',
'20x16x19',
'28x30x27',
'26x7x18',
'25x27x24',
'11x19x7',
'21x19x17',
'2x12x27',
'20x5x14',
'8x5x8',
'6x24x8',
'7x28x20',
'3x20x28',
'5x20x30',
'13x29x1',
'26x29x5',
'19x28x25',
'5x19x11',
'11x20x22',
'4x23x1',
'19x25x12',
'3x10x6',
'3x14x10',
'28x16x12',
'23x12x2',
'23x12x19',
'20x28x10',
'9x10x25',
'16x21x16',
'1x18x20',
'9x4x26',
'3x25x8',
'17x16x28',
'9x28x16',
'27x3x12',
'17x24x12',
'13x21x10',
'7x17x13',
'6x10x9',
'7x29x25',
'11x19x30',
'1x24x5',
'20x16x23',
'24x28x21',
'6x29x19',
'25x2x19',
'12x5x26',
'25x29x12',
'16x28x22',
'26x26x15',
'9x13x5',
'10x29x7',
'1x24x16',
'22x2x2',
'6x16x13',
'3x12x28',
'4x12x13',
'14x27x21',
'14x23x26',
'7x5x18',
'8x30x27',
'15x9x18',
'26x16x5',
'3x29x17',
'19x7x18',
'16x18x1',
'26x15x30',
'24x30x21',
'13x20x7',
'4x12x10',
'27x20x11',
'28x29x21',
'20x14x30',
'28x12x3',
'19x1x8',
'4x8x6',
'21x14x2',
'27x19x21',
'17x24x14',
'15x18x11',
'18x7x26',
'25x28x29',
'27x26x9',
'18x12x17',
'24x28x25',
'13x24x14',
'26x9x28',
'9x3x30',
'9x2x9',
'8x1x29',
'18x30x10',
'18x14x5',
'26x8x30',
'12x1x1',
'30x5x28',
'26x17x21',
'10x10x10',
'20x7x27',
'13x17x6',
'21x13x17',
'2x16x8',
'7x9x9',
'15x26x4',
'11x28x25',
'10x6x19',
'21x6x29',
'15x5x6',
'28x9x16',
'14x3x10',
'12x29x5',
'22x19x19',
'25x15x22',
'30x6x28',
'11x23x13',
'20x25x14',
'26x1x13',
'6x14x15',
'16x25x17',
'28x4x13',
'10x24x25',
'4x13x10',
'9x15x16',
'15x24x6',
'22x9x19',
'11x11x8',
'4x19x12',
'24x5x4',
'27x12x13',
'7x27x16',
'2x6x9',
'29x27x15',
'18x26x23',
'19x16x15',
'14x5x25',
'9x16x30',
'4x6x4',
'13x10x10',
'1x8x29',
'23x5x17',
'19x20x20',
'11x27x24',
'27x15x5',
'15x11x12',
'21x11x3',
'1x13x22',
'17x8x8',
'13x14x14',
'17x22x7',
'9x5x8',
'2x6x3',
'25x9x15',
'11x8x13',
'9x25x12',
'3x16x12',
'12x16x8',
'16x24x17',
'4x6x26',
'22x29x11',
'14x17x19',
'28x2x27',
'24x22x19',
'22x20x30',
'23x28x4',
'16x12x14',
'22x24x22',
'29x1x28',
'26x29x16',
'3x25x30',
'27x3x13',
'22x24x26',
'25x3x2',
'7x24x2',
'10x5x3',
'28x8x29',
'25x6x4',
'12x17x14',
'24x3x5',
'23x27x7',
'26x23x30',
'11x10x19',
'23x7x11',
'26x14x15',
'14x3x25',
'12x24x14',
'2x14x12',
'9x12x16',
'9x2x28',
'3x8x2',
'22x6x9',
'2x30x2',
'25x1x9',
'20x11x2',
'14x11x12',
'7x14x12',
'24x8x26',
'13x21x23',
'18x17x23',
'13x6x17',
'20x20x19',
'13x17x29',
'7x24x24',
'23x8x6',
'19x10x28',
'3x8x21',
'15x20x18',
'11x27x1',
'11x24x28',
'13x20x11',
'18x19x22',
'27x22x12',
'28x3x2',
'13x4x29',
'26x5x6',
'14x29x25',
'7x4x7',
'5x17x7',
'2x8x1',
'22x30x24',
'22x21x28',
'1x28x13',
'11x20x4',
'25x29x19',
'9x23x4',
'30x6x11',
'25x18x10',
'28x10x24',
'3x5x20',
'19x28x10',
'27x19x2',
'26x20x4',
'19x21x6',
'2x12x30',
'8x26x27',
'11x27x10',
'14x13x17',
'4x3x21',
'2x20x21',
'22x30x3',
'2x23x2',
'3x16x12',
'22x28x22',
'3x23x29',
'8x25x15',
'9x30x4',
'10x11x1',
'24x8x20',
'10x7x27',
'7x22x4',
'27x13x17',
'5x28x5',
'30x15x13',
'10x8x17',
'8x21x5',
'8x17x26',
'25x16x4',
'9x7x25',
'13x11x20',
'6x30x9',
'15x14x12',
'30x1x23',
'5x20x24',
'22x7x6',
'26x11x23',
'29x7x5',
'13x24x28',
'22x20x10',
'18x3x1',
'15x19x23',
'28x28x20',
'7x26x2',
'9x12x20',
'15x4x6',
'1x17x21',
'3x22x17',
'9x4x20',
'25x19x5',
'9x11x22',
'14x1x17',
'14x5x16',
'30x5x18',
'19x6x12',
'28x16x22',
'13x4x25',
'29x23x18',
'1x27x3',
'12x14x4',
'10x25x19',
'15x19x30',
'11x30x4',
'11x22x26',
'13x25x2',
'17x13x27',
'11x30x24',
'15x1x14',
'17x18x4',
'26x11x3',
'16x22x28',
'13x20x9',
'1x18x3',
'25x11x12',
'20x21x1',
'22x27x4',
'8x28x23',
'7x13x27',
'17x9x26',
'27x27x20',
'11x20x12',
'26x21x11',
'29x14x12',
'27x25x1',
'28x29x25',
'21x23x28',
'5x18x18',
'19x5x4',
'7x6x30',
'27x8x11',
'12x24x12',
'16x25x22',
'26x11x29',
'25x22x17',
'15x23x23',
'17x9x6',
'30x10x16',
'21x3x5',
'18x27x2',
'28x21x14',
'16x18x17',
'4x18x2',
'9x1x14',
'9x1x9',
'5x27x12',
'8x16x30',
'3x19x19',
'16x26x24',
'1x6x9',
'15x14x3',
'11x7x19',
'8x19x3',
'17x26x26',
'6x18x11',
'19x12x4',
'29x20x16',
'20x17x23',
'6x6x5',
'20x30x19',
'18x25x18',
'2x26x2',
'3x1x1',
'14x25x18',
'3x1x6',
'11x14x18',
'17x23x27',
'25x29x9',
'6x25x20',
'20x10x9',
'17x5x18',
'29x14x8',
'14x25x26',
'10x15x29',
'23x19x11',
'22x2x2',
'4x5x5',
'13x23x25',
'19x13x19',
'20x18x6',
'30x7x28',
'26x18x17',
'29x18x10',
'30x29x1',
'12x26x24',
'18x17x26',
'29x28x15',
'3x12x20',
'24x10x8',
'30x15x6',
'28x23x15',
'14x28x11',
'10x27x19',
'14x8x21',
'24x1x23',
'1x3x27',
'6x15x6',
'8x25x26',
'13x10x25',
'6x9x8',
'10x29x29',
'26x23x5',
'14x24x1',
'25x6x22',
'17x11x18',
'1x27x26',
'18x25x23',
'20x15x6',
'2x21x28',
'2x10x13',
'12x25x14',
'2x14x23',
'30x5x23',
'29x19x21',
'29x10x25',
'14x22x16',
'17x11x26',
'12x17x30',
'8x17x7',
'20x25x28',
'20x11x30',
'15x1x12',
'13x3x24',
'16x23x23',
'27x3x3',
'26x3x27',
'18x5x12',
'12x26x7',
'19x27x12',
'20x10x28',
'30x12x25',
'3x14x10',
'21x26x1',
'24x26x26',
'7x21x30',
'3x29x12',
'29x28x5',
'5x20x7',
'27x11x2',
'15x20x4',
'16x15x15',
'19x13x7',
'7x17x15',
'27x24x15',
'9x17x28',
'20x21x14',
'14x29x29',
'23x26x13',
'27x23x21',
'18x13x6',
'26x16x21',
'18x26x27',
'9x3x12',
'30x18x24',
'12x11x29',
'5x15x1',
'1x16x3',
'14x28x11',
'2x18x1',
'19x18x19',
'18x28x21',
'2x3x14',
'22x16x5',
'28x18x28',
'24x16x18',
'7x4x10',
'19x26x19',
'24x17x7',
'25x9x6',
'25x17x7',
'20x22x20',
'3x3x7',
'23x19x15',
'21x27x21',
'1x23x11',
'9x19x4',
'22x4x18',
'6x15x5',
'15x25x2',
'23x11x20',
'27x16x6',
'27x8x5',
'10x10x19',
'22x14x1',
'7x1x29',
'8x11x17',
'27x9x27',
'28x9x24',
'17x7x3',
'26x23x8',
'7x6x30',
'25x28x2',
'1x30x25',
'3x18x18',
'28x27x15',
'14x14x1',
'10x25x29',
'18x12x9',
'20x28x16',
'26x27x22',
'8x26x1',
'21x2x12',
'25x16x14',
'21x19x5',
'12x9x22',
'16x5x4',
'5x4x16',
'25x29x3',
'4x29x13',
'15x16x29',
'8x11x24',
'30x11x20',
'17x21x14',
'12x24x10',
'10x12x6',
'3x26x30',
'15x14x25',
'20x12x21',
'13x11x16',
'15x13x3',
'5x17x29',
'6x3x23',
'9x26x11',
'30x1x8',
'14x10x30',
'18x30x10',
'13x19x19',
'16x19x17',
'28x7x10',
'28x29x4',
'3x21x10',
'4x28x24',
'7x28x9',
'2x4x9',
'25x27x13',
'6x12x15',
'4x18x20',
'20x1x16',
'5x13x24',
'11x11x10',
'12x9x23',
'1x9x30',
'17x28x24',
'9x5x27',
'21x15x16',
'17x4x14',
'8x14x4',
'13x10x7',
'17x12x14',
'9x19x19',
'2x7x21',
'8x24x23',
'19x5x12',
'11x23x21',
'13x3x1',
'5x27x15',
'12x25x25',
'13x21x16',
'9x17x11',
'1x15x21',
'4x26x17',
'11x5x15',
'23x10x15',
'12x17x21',
'27x15x1',
'4x29x14',
'5x24x25',
'10x10x12',
'18x12x9',
'11x24x23',
'24x23x3',
'28x12x15',
'29x9x14',
'11x25x8',
'5x12x2',
'26x26x29',
'9x21x2',
'8x8x25',
'1x16x30',
'17x29x20',
'9x22x13',
'7x18x16',
'3x3x23',
'26x25x30',
'15x23x24',
'20x23x5',
'20x16x10',
'23x7x8',
'20x18x26',
'8x27x6',
'30x23x23',
'7x7x24',
'21x11x15',
'1x30x25',
'26x27x22',
'30x28x13',
'20x13x13',
'3x1x15',
'16x7x1',
'7x25x15',
'12x7x18',
'16x9x23',
'16x12x18',
'29x5x2',
'17x7x7',
'21x17x5',
'9x9x17',
'26x16x10',
'29x29x23',
'17x26x10',
'5x19x17',
'1x10x1',
'14x21x20',
'13x6x4',
'13x13x3',
'23x4x18',
'4x16x3',
'16x30x11',
'2x11x2',
'15x30x15',
'20x30x22',
'18x12x16',
'23x5x16',
'6x14x15',
'9x4x11',
'30x23x21',
'20x7x12',
'7x18x6',
'15x6x5',
'18x22x19',
'16x10x22',
'26x20x25',
'9x25x25',
'29x21x10',
'9x21x24',
'7x18x21',
'14x3x15',
'18x19x19',
'4x29x17',
'14x10x9',
'2x26x14',
'13x3x24',
'4x4x17',
'6x27x24',
'2x18x3',
'14x25x2',
'30x14x17',
'11x6x14',
'4x10x18',
'15x4x2',
'27x7x10',
'13x24x1',
'7x12x6',
'25x22x26',
'19x2x18',
'23x29x2',
'2x15x4',
'12x6x9',
'16x14x29',
'9x17x3',
'21x9x12',
'23x18x22',
'10x8x4',
'29x2x7',
'19x27x15',
'4x24x27',
'25x20x14',
'8x23x19',
'1x24x19',
'6x20x10',
'15x8x5',
'18x28x5',
'17x23x22',
'9x16x13',
'30x24x4',
'26x3x13',
'12x22x18',
'29x17x29',
'26x4x16',
'15x7x20',
'9x15x30',
'12x7x18',
'28x19x18',
'11x23x23',
'24x20x1',
'20x3x24',
'1x26x1',
'14x10x6',
'5x27x24',
'13x21x12',
'20x20x5',
'6x28x9',
'11x26x11',
'26x29x12',
'21x4x11',
'20x11x17',
'22x27x20',
'19x11x21',
'2x11x11',
'13x5x7',
'12x10x25',
'21x28x1',
'15x30x17',
'28x19x1',
'4x19x12',
'11x4x12',
'4x10x30',
'11x18x5',
'22x20x12',
'3x7x27',
'20x26x4',
'13x27x26',
'23x14x13',
'4x19x7',
'26x27x16',
'20x5x20',
'18x5x8',
'19x21x1',
'22x8x1',
'29x4x1',
'24x10x15',
'24x9x20',
'10x3x8',
'29x30x3',
'2x8x24',
'16x7x18',
'2x11x23',
'23x15x16',
'21x12x6',
'24x28x9',
'6x1x13',
'14x29x20',
'27x24x13',
'16x26x8',
'5x6x17',
'21x8x1',
'28x19x21',
'1x14x16',
'18x2x9',
'29x28x10',
'22x26x27',
'18x26x23',
'22x24x2',
'28x26x1',
'27x29x12',
'30x13x11',
'1x25x5',
'13x30x18',
'3x13x22',
'22x10x11',
'2x7x7',
'18x17x8',
'9x22x26',
'30x18x16',
'10x2x3',
'7x27x13',
'3x20x16',
'9x21x16',
'1x18x15',
'21x30x30',
'4x25x23',
'3x11x7',
'5x6x12',
'27x1x20',
'13x15x24',
'23x29x2',
'13x5x24',
'22x16x15',
'28x14x3',
'29x24x9',
'2x20x4',
'30x10x4',
'23x7x20',
'22x12x21',
'3x19x11',
'4x28x28',
'5x4x7',
'28x12x25',
'2x16x26',
'23x20x7',
'5x21x29',
'9x21x16',
'9x6x10',
'9x6x4',
'24x14x29',
'28x11x6',
'10x22x1',
'21x30x20',
'13x17x8',
'2x25x24',
'19x21x3',
'28x8x14',
'6x29x28',
'27x10x28',
'30x11x12',
'17x2x10',
'14x19x17',
'2x11x4',
'26x1x2',
'13x4x4',
'23x20x18',
'2x17x21',
'28x7x15',
'3x3x27',
'24x17x30',
'28x28x20',
'21x5x29',
'13x12x19',
'24x29x29',
'19x10x6',
'19x12x14',
'21x4x17',
'27x16x1',
'4x17x30',
'23x23x18',
'23x15x27',
'26x2x11',
'12x8x8',
'15x23x26',
'30x17x15',
'17x17x15',
'24x4x30',
'9x9x10',
'14x25x20',
'25x11x19',
'20x7x1',
'9x21x3',
'7x19x9',
'10x6x19',
'26x12x30',
'21x9x20',
'15x11x6',
'30x21x9',
'10x18x17',
'22x9x8',
'8x30x26',
'28x12x27',
'17x17x7',
'11x13x8',
'5x3x21',
'24x1x29',
'1x28x2',
'18x28x10',
'8x29x14',
'26x26x27',
'17x10x25',
'22x30x3',
'27x9x13',
'21x21x4',
'30x29x16',
'22x7x20',
'24x10x2',
'16x29x17',
'28x15x17',
'19x19x22',
'9x8x6',
'26x23x24',
'25x4x27',
'16x12x2',
'11x6x18',
'19x14x8',
'9x29x13',
'23x30x19',
'10x16x1',
'4x21x28',
'23x25x25',
'19x9x16',
'30x11x12',
'24x3x9',
'28x19x4',
'18x12x9',
'7x1x25',
'28x7x1',
'24x3x12',
'30x24x22',
'27x24x26',
'9x30x30',
'29x10x8',
'4x6x18',
'10x1x15',
'10x4x26',
'23x20x16',
'6x3x14',
'30x8x16',
'25x14x20',
'11x9x3',
'15x23x25',
'8x30x22',
'22x19x18',
'25x1x12',
'27x25x7',
'25x23x3',
'13x20x8',
'5x30x7',
'18x19x27',
'20x23x3',
'1x17x21',
'21x21x27',
'13x1x24',
'7x30x20',
'21x9x18',
'23x26x6',
'22x9x29',
'17x6x21',
'28x28x29',
'19x25x26',
'9x27x21',
'5x26x8',
'11x19x1',
'10x1x18',
'29x4x8',
'21x2x22',
'14x12x8'];

function formatNumber(value, decimals, opt) {
	opt = opt || {};
	var result = value + "";
	var signo = result.substr(0, 1);

	if (signo == "+" || signo == "-") {
		result = result.substr(1);
	} else {
		signo = "";
	}
	
	opt.decimals = decimals;
	
	if (typeof(opt.decimals) != 'undefined') {
		result = roundNumber(Ext.num(result), opt.decimals) + "";
		
		if (opt.decimals > 0) {
			if (result.indexOf(".") == -1) result += ".0";
			var numDecs = (result.length-1) - result.indexOf(".");
			
			while (numDecs < opt.decimals) {
				result += "0";
				numDecs = (result.length-1) - result.indexOf(".");
			}
		}
	}
	
	var strDecimals = (result.indexOf(".") >= 0) ? result.substr(result.indexOf(".") + 1) : "";
	var pieces = [];
	var start = result.indexOf(".");
	if (start < 0) start = result.length;
	
	while (start - 3 >= 0) {
		start = start - 3;
		pieces.push(result.substr(start, 3));						
	}
	
	if (start > 0) pieces.push(result.substr(0, start));
	
	var result = "";
	for (var i = pieces.length - 1; i >= 0; i--) {
		result += pieces[i];
		
		if (i > 0) result += ".";
	}
	
	if (strDecimals != "") result += "," + strDecimals;

	result = signo + result;
	
	return result;
}