CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:drvilepis
Submission time:2022-11-03 16:25:43 +0200
Language:Rust
Status:READY
Result:28
Feedback
groupverdictscore
#1ACCEPTED28
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3details
#2ACCEPTED0.00 s1, 2, 3details
#3ACCEPTED0.00 s1, 2, 3details
#4ACCEPTED0.01 s2, 3details
#50.01 s2, 3details
#60.02 s2, 3details
#7--3details
#8--3details
#9--3details

Compiler report

warning: unused `Result` that must be used
  --> input/code.rs:34:5
   |
34 |     stdin.read_line(&mut input);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_must_use)]` on by default
   = note: this `Result` may be an `Err` variant, which should be handled

warning: unused `Result` that must be used
  --> input/code.rs:42:9
   |
42 |         stdin.read_line(&mut input);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this `Result` may be an `Err` variant, which should be handled

warning: 2 warnings emitted

Code

use std::collections::BinaryHeap;

const MODULO: usize = 1_000_000_007;

#[derive(Eq)]
struct Node {
    x: usize,
    y: usize,
    value: usize,
}

impl Ord for Node {
    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
        self.value.cmp(&other.value).reverse()
    }
}

impl PartialOrd for Node {
    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
        Some(self.value.cmp(&other.value).reverse())
    }
}

impl PartialEq for Node {
    fn eq(&self, other: &Self) -> bool {
        self.value.eq(&other.value)
    }
}

fn main() {
    let stdin = std::io::stdin();

    let mut input = String::new();
    stdin.read_line(&mut input);

    let grid_size = input.trim().parse::<usize>().unwrap();
    input.clear();

    let mut queue = BinaryHeap::new();

    let mut grid = (0..grid_size).map(|y| {
        stdin.read_line(&mut input);
        let out = input.split_whitespace().enumerate().map(|(x, n)| {
            let num = n.parse::<usize>().unwrap();

            queue.push(Node {
                x,
                y,
                value: num,
            });

            (num, 1usize)
        })
            .collect::<Vec<_>>();
        input.clear();

        out
    }).collect::<Vec<_>>();

    (0..grid_size).for_each(|_| {
        (0..grid_size).for_each(|_| {
            let node = queue.pop().unwrap();
            increment(&mut grid, grid_size, node.x, node.y);
        });
    });

    let ans = grid.into_iter().map(|l| l.into_iter().map(|(_, n)| n)).flatten().fold(0, |i, n| (i + n % MODULO));

    println!("{ans}");
}

fn increment(grid: &mut Vec<Vec<(usize, usize)>>, grid_size: usize, x: usize, y: usize) {
    let (num, value) = grid[y][x];
    (0..x).chain(x+1..grid_size).for_each(|new_x| {
        let (other_num, other_value) = grid[y][new_x];
        if other_num > num {
            let mut new_value = value + other_value;
            if new_value > MODULO {
                new_value -= MODULO
            }
            grid[y][new_x].1 = new_value;
        };
    });
    (0..y).chain(y+1..grid_size).for_each(|new_y| {
        let (other_num, other_value) = grid[new_y][x];
        if other_num > num {
            let mut new_value = value + other_value;
            if new_value > MODULO {
                new_value -= MODULO
            }
            grid[new_y][x].1 = new_value;
        };
    });
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
3
1 1 1
1 1 1
1 1 1

correct output
9

user output
9

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
3
1 2 3
6 5 4
7 8 9

correct output
135

user output
135

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
3
7 8 1
4 5 4
3 9 6

correct output
57

user output
57

Test 4

Group: 2, 3

Verdict: ACCEPTED

input
100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
10000

user output
10000

Test 5

Group: 2, 3

Verdict:

input
100
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
187458477

user output
4969187493260

Test 6

Group: 2, 3

Verdict:

input
100
2995 8734 1018 2513 7971 5063 ...

correct output
964692694

user output
4458964723900

Test 7

Group: 3

Verdict:

input
1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
1000000

user output
(empty)

Test 8

Group: 3

Verdict:

input
1000
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

correct output
229147081

user output
(empty)

Test 9

Group: 3

Verdict:

input
1000
520283 805991 492643 75254 527...

correct output
951147313

user output
(empty)