CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:drvilepis
Submission time:2022-11-03 13:50:49 +0200
Language:Rust
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.00 s1, 2, 3details
#20.00 s1, 2, 3details
#30.00 s1, 2, 3details
#40.00 s2, 3details
#5--2, 3details
#6--2, 3details
#70.03 s3details
#8--3details
#9--3details

Compiler report

warning: unused variable: `s`
  --> input/code.rs:16:36
   |
16 |     let grid = (0..grid_size).map(|s| {
   |                                    ^ help: if this is intentional, prefix it with an underscore: `_s`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: function is never used: `as_index`
 --> input/code.rs:3:4
  |
3 | fn as_index(grid_size: usize, x: usize, y: usize) -> usize {
  |    ^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: unused `Result` that must be used
  --> input/code.rs:11:5
   |
11 |     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:17:9
   |
17 |         stdin.read_line(&mut input);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this `Result` may be an `Err` variant, which should be handled

warning:...

Code

const MODULO: usize = 1_000_000_007;

fn as_index(grid_size: usize, x: usize, y: usize) -> usize {
    x + y * grid_size
}

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 grid = (0..grid_size).map(|s| {
        stdin.read_line(&mut input);
        let out = input.split_whitespace().map(|n| n.parse::<usize>().unwrap()).collect::<Vec<_>>();
        input.clear();

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

    let ans = (0..grid_size).map(|x| {
        (0..grid_size).map(|y| {
            recurse(&grid, grid_size, x, y, grid[y][x]) + 1
        }).sum::<usize>()
    }).sum::<usize>();

    println!("{ans}");
}

fn recurse(grid: &Vec<Vec<usize>>, grid_size: usize, x: usize, y: usize, val: usize) -> usize {
    if val == 1 {
        return 1;
    };
    (0..x).chain(x+1..grid_size).map(|i| {
        match grid[y][i] {
            1 => 1,
            num if num < val => recurse(grid, grid_size, i, y, num) + 1,
            _ => 0,
        }
    }).sum::<usize>() % MODULO
    +
    (0..y).chain(y+1..grid_size).map(|i| {
        match grid[i][y] {
            1 => 1,
            num if num < val => recurse(grid, grid_size, x, i, num) + 1,
            _ => 0,
        }
    }).sum::<usize>() % MODULO
}

Test details

Test 1

Group: 1, 2, 3

Verdict:

input
3
1 1 1
1 1 1
1 1 1

correct output
9

user output
18

Test 2

Group: 1, 2, 3

Verdict:

input
3
1 2 3
6 5 4
7 8 9

correct output
135

user output
72

Test 3

Group: 1, 2, 3

Verdict:

input
3
7 8 1
4 5 4
3 9 6

correct output
57

user output
39

Test 4

Group: 2, 3

Verdict:

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

correct output
10000

user output
20000

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
(empty)

Test 6

Group: 2, 3

Verdict:

input
100
2995 8734 1018 2513 7971 5063 ...

correct output
964692694

user output
(empty)

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
2000000

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)