Dice Combinations

warning: unused import: `max`
 --> input/code.rs:1:16
  |
1 | use std::cmp::{max, min};
  |                ^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused imports: `HashMap`, `HashSet`
 --> input/code.rs:2:24
  |
2 | use std::collections::{HashMap, HashSet};
  |                        ^^^^^^^  ^^^^^^^

warning: variable `DP` should have a snake case name
  --> input/code.rs:33:13
   |
33 |     let mut DP = vec![0_usize; n+1];
   |             ^^ help: convert the identifier to snake case: `dp`
   |
   = note: `#[warn(non_snake_case)]` on by default

warning: 3 warnings emitted

use std::cmp::{max, min};
use std::collections::{HashMap, HashSet};
use std::io::{self, Read};

macro_rules! input {
    ($it: expr) => {
        $it.next().unwrap().parse().unwrap()
    };
    ($it: expr, $T: ty) => {
        $it.next().unwrap().parse::<$T>().unwrap()
    };
}
/*
mod classes;
mod homework;

fn main() {
    // println!("{}", "-".repeat(20));
    // classes::c06::task1();
    homework::hw2::task1();
    // println!("{}", "-".repeat(20));
}
// */

fn main() {
    let mut buf = String::new();
    io::stdin().read_to_string(&mut buf).unwrap();

    let mut it = buf.split_whitespace();

    let n: usize = input!(it);

    let mut DP = vec![0_usize; n+1];
    DP[1]=1;
    DP[0]=1;
    let mut k=2;
    while k<=n {
        for i in 1..=min(k, 6) {
            DP[k]= (DP[k] + DP[k-i]) % (10_usize.pow(9)+7);
        }
        k+=1;

    }
    println!("{}", DP[n]);
}

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

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED