/*function datehour(s) {
		let fuck = s.split(/\s+/);
		return [fuck[0], Number(fuck[1].split(':')[0])];
	}
	function dumb(temp, idx) {
		if(temp[1] === 12) {
			shit[idx][0] = shit[idx][0].replace('12:', '00:');
		} else {
			console.error('what the fuck');

	let usageStreams = new Map();
	for(let i = shit.length - 1; i >= 0; --i) {
		shit[i][0] = shit[i][0].replace(/^(\d{2})\/(\d{2})\/(\d{4})/, "$3-$2-$1");
		let ym = shit[i][0].substring(0, 7);
		if(shit[i][8] === 'MB') {
			ym = shit[i][8] + '-' + ym;
		}
		if(!usageStreams.has(ym)) {
			writeFileSync(`usage-${ym}.csv`, h1, {flag: 'wx'});
			usageStreams.set(ym, [createWriteStream(`usage-${ym}.csv`, {flags: 'a'}), []]);

		usageStreams.get(ym)[1].push(shit[i]);

	function gay(i) {
		switch(drops.length) {
			case 0:
				break;
			case 2:
				let idx = drops[0] + 1;
				let original = datehour(shit[idx][0]);
				let temp = original;
				dumb(temp, idx);
				while(++idx < shit.length && original[0] === (temp = datehour(shit[idx][0]))[0]) {

	usageStreams.forEach(v => {
		function datehour(s) {
			let fuck = s.split(/\s+/);
			return [fuck[0], Number(fuck[1].split(':')[0])];
		}
		function dumb(temp, idx) {
			if(temp[1] === 12) {
				v[1][idx][0] = v[1][idx][0].replace('12:', '00:');
			} else {
				console.error('what the fuck', temp, idx, v[1][idx]);
			}
		}
		function gay(i) {
			switch(drops.length) {
				case 0:
					break;
				case 2:
					let idx = drops[0] - 1;
					let original = datehour(v[1][idx][0]);
					let temp = original;

				}
			case 1:
				for(let j = drops[drops.length - 1]; j > i; --j) {
					shit[j][0] = shit[j][0].replace(/(\d{1,2}):/, (match, p1) => Number(p1) + 12 + ':');
				}
				break;
			default:
				console.error('wtf');

					while(--idx >= 0 && original[0] === (temp = datehour(v[1][idx][0]))[0]) {
						dumb(temp, idx);
					}
				case 1:
					for(let j = drops[drops.length - 1]; j < i; ++j) {
						v[1][j][0] = v[1][j][0].replace(/(\d{1,2}):/, (match, p1) => Number(p1) + 12 + ':');
					}
					break;
				default:
					console.error('wtf', v[1][i], i, drops);
			}
			drops = [];

		drops = [];
	}
	let dt = datehour(shit[shit.length - 1][0]);
	let drops = [];
	for(let i = shit.length - 2; i >= 0; --i) {
		let dtt = datehour(shit[i][0]);
		if(dtt[0] === dt[0]) {//same day
			if(dtt[1] < dt[1]) {//new hour is less than (for example, 12 noon -> 1pm)
				drops.push(i);

		let dt = datehour(v[1][0][0]);
		let drops = [];
		for(let i = 1; i < v[1].length; ++i) {
			let dtt = datehour(v[1][i][0]);
			if(dtt[0] === dt[0]) {//same day
				if(dtt[1] < dt[1]) {//new hour is less than (for example, 12 noon -> 1pm)
					drops.push(i);
				}
			} else {//different day
				gay(i);

		} else {//different day
			gay(i);

			dt = dtt;

		dt = dtt;
	}
	gay(-1);*/
	let usageStreams = new Map();
	for(let i = shit.length - 1; i >= 0; --i) {
		shit[i][0] = shit[i][0].replace(/^(\d{2})\/(\d{2})\/(\d{4})/, "$3-$2-$1").replace(/ (\d):/, " 0$1:");
		let ym = shit[i][0].substring(0, 7);
		if(!usageStreams.has(ym)) {
			writeFileSync(`usage-${ym}.csv`, h1, {flag: 'wx'});
			usageStreams.set(ym, createWriteStream(`usage-${ym}.csv`, {flags: 'a'}));

		gay(v[1].length);
		for(let i = 0; i < v[1].length; ++i) {
			v[1][i][0] = v[1][i][0].replace(/ (\d):/, " 0$1:");
			v[0].write(v[1][i].join() + '\n');

		usageStreams.get(ym).write(shit[i].join() + '\n');
	}
	usageStreams.forEach(s => s.end());

		v[0].end();
	});