Binge watching

warning: unused import: `collections::VecDeque`
 --> input/code.rs:2:11
  |
2 | use std::{collections::VecDeque, io::stdin};
  |           ^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused variable: `i`
  --> input/code.rs:20:9
   |
20 |     for i in 0..n {
   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: 2 warnings emitted

use std::{collections::VecDeque, io::stdin};

fn take_int() -> usize {
    let mut input = String::new();
    stdin().read_line(&mut input).unwrap();
    return input.trim().parse().unwrap()
}

fn take_vector() -> Vec<i64> {
    let mut input = String::new();
    stdin().read_line(&mut input).unwrap();
    let arr = input.trim().split_whitespace().map(|x| x.parse().unwrap()).collect();
    return arr;
}

fn main() {
    let n = take_int();
    let mut movies = vec![];
    for i in 0..n {
        let t = take_vector();
        movies.push((t[0], t[1]));
    }
    movies.sort_by_key(|x| x.1);
    let mut cur = movies[0].0;
    let mut count = 0;
    for m in movies {
        if m.0 >= cur {
            count += 1;
            cur = m.1;
        } else {
            continue;
        }
    }
    println!("{}", count);
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED