Submission #2851482

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Source Code Expand

use std::io;
use std::process;

fn _read_line_one_usize() -> usize {
	let mut line = String::new();
	match io::stdin().read_line(&mut line) {
		Ok(_n) => {
			line.trim().parse::<usize>().unwrap()
		}
		Err(err) => {
			println!("error: {}", err);
			process::exit(1);
		}
	}
}

fn main() {
	let n = _read_line_one_usize();

	let mut time = [0; 1442];
	for _i in 0..n {
		let mut line = String::new();
		match io::stdin().read_line(&mut line) {
			Ok(_n) => {
				let mut start_min = line[0..2].parse::<usize>().unwrap() * 60 +
					line[2..4].parse::<usize>().unwrap();
				let mut end_min = line[5..7].parse::<usize>().unwrap() * 60 +
					line[7..9].parse::<usize>().unwrap();
				start_min -= start_min % 5;
				if end_min % 5 != 0 {
					end_min += 5 - (end_min % 5);
				}
				time[start_min] = time[start_min] + 1;
				time[end_min + 1] = time[end_min + 1] - 1;
			}
			Err(err) => {
				println!("error: {}", err);
				process::exit(1);
			}
		}
	}
	for i in 1..1442 {
		time[i] += time[i - 1];
	}

	let mut started = false;
	for i in 0..1442 {
		if time[i] > 0 && !started {
			let hour = i / 60;
			let min = i - (hour * 60);
			print!("{0: >02}{1: >02}-", hour, min);
			started = true;
		} else if time[i] < 1 && started {
			let hour = (i - 1) / 60;
			let min = i - 1 - (hour * 60);
			println!("{0: >02}{1: >02}", hour, min);
			started = false;
		}
	}
}

Submission Info

Judge Result