CSES - Datatähti 2023 alku - Results
Submission details
Task:Ruudukko
Sender:Arska123
Submission time:2022-10-31 18:35:43 +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
#4ACCEPTED0.00 s2, 3details
#50.03 s2, 3details
#60.04 s2, 3details
#7ACCEPTED0.03 s3details
#8--3details
#9--3details

Code

use std::{io::stdin, collections::HashMap};
struct Grid {
n: u32,
data: Vec<u32>,
path_cache: HashMap<u64, u64>,
}
impl Grid {
fn get(&self, x: u32, y: u32) -> Option<u32> {
self.data.get((x + self.n * y) as usize).copied()
}
fn possible_paths(&mut self, x: u32, y: u32) -> Option<u64> {
let key = (x as u64) << 32 | y as u64;
if let Some(&s) = self.path_cache.get(&key) {
Some(s)
} else {
let this_value = self.get(x, y)?;
if this_value == 1 {
return Some(0);
}
let mut sum: u64 = 0;
for check_y in 0..self.n {
if self.get(x, check_y)? < this_value {
sum += self.possible_paths(x, check_y)? + 1;
}
}
for check_x in 0..self.n {
if self.get(check_x, y)? < this_value {
sum += self.possible_paths(check_x, y)? + 1;
}
}
self.path_cache.insert(key, sum);
Some(sum)
}
}
}
fn main() {
let mut buf = String::new();
stdin().read_line(&mut buf).unwrap();
let n: u32 = buf.trim().parse().unwrap();
let mut grid = Grid {
n,
data: Vec::with_capacity((n * n) as usize),
path_cache: HashMap::new(),
};
for _ in 0..n {
buf.clear();
stdin().read_line(&mut buf).unwrap();
for value in buf.split_whitespace() {
let value: u32 = value.parse().unwrap();
grid.data.push(value);
}
}
let mut sum: u64 = 0;
for x in 0..n {
for y in 0..n {
sum += grid.possible_paths(x, y).unwrap() + 1;
}
}
println!("{}", sum % (10_u64.pow(9) + 7));
}

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
971094161

Test 6

Group: 2, 3

Verdict:

input
100
2995 8734 1018 2513 7971 5063 ...

correct output
964692694

user output
458862793

Test 7

Group: 3

Verdict: ACCEPTED

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

correct output
1000000

user output
1000000

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)