Ruudukko

use std::io;
use std::thread;

fn recurse(y: usize, x: usize, array: &Vec<Vec<i32>>) -> i64 {
    let mut paths = 1;
    for (index, i) in array[y].iter().enumerate() {
        if i < &array[y][x] {
            paths += recurse(y, index, array);
        }
    }
    for (index, i) in array.iter().enumerate() {
        if i[x] < array[y][x] {
            paths += recurse(index, x, array);
        }
    }
    return paths;
}

fn main() {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    let input: i32 = input.trim().parse().unwrap();
    let mut array = Vec::new();
    for _ in 0..input {
        let mut input = String::new();
        io::stdin().read_line(&mut input).unwrap();
        let input: Vec<i32> = input.split_whitespace().map(|x| x.parse().unwrap()).collect();
        array.push(input);
    }

    let mut handles = Vec::new();
    
    let start = std::time::Instant::now();
    let mut paths: i64 = 0;
    for i in 0..input {
        let array = array.clone();
        let handle = thread::spawn(move || {
            let mut paths = 0;
            for j in 0..input {
                paths += recurse(i as usize, j as usize, &array);
            }
            paths
        });
        handles.push(handle);
    }
    let duration = start.elapsed();
    for handle in handles {
        paths += handle.join().unwrap();
    }
    println!("Time elapsed is: {:?}", duration);
    println!("{}", paths);
}

Test 1

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 2

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 3

Group: 1, 2, 3

Verdict: WRONG ANSWER

Test 4

Group: 2, 3

Verdict: RUNTIME ERROR

thread 'main' panicked at 'failed to spawn thread: Os { code: 11, kind: WouldBlock, messag...

Test 5

Group: 2, 3

Verdict: RUNTIME ERROR

thread 'main' panicked at 'failed to spawn thread: Os { code: 11, kind: WouldBlock, messag...

Test 6

Group: 2, 3

Verdict: RUNTIME ERROR

thread 'main' panicked at 'failed to spawn thread: Os { code: 11, kind: WouldBlock, messag...

Test 7

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 3

Verdict: TIME LIMIT EXCEEDED