ABC 045, finished completely

atcoder/beginner_contests/abc045/src/bin/c.rs

@@ -1,5 +1,12 @@
 use proconio::input;
 
+fn dfs(digits: &Vec<u64>, i: usize, sum: u64, counter: u64) -> u64{
+    if i < digits.len(){
+        dfs(digits, i + 1, sum + counter, digits[i]) + dfs(digits, i + 1, sum, counter * 10 + digits[i])
+    } else{
+        sum + counter
+    }
+}
 
 fn main() {
     input!{
@@ -7,8 +14,7 @@ fn main() {
     };
 
     let ns : Vec<u64> = s.chars().map(|c| u64::from(c.to_digit(10).unwrap())).collect();
-    let nns = vec![ns];
-    let mut result : u64 = 0;
+    let result = dfs(&ns, 1, 0, ns[0]);
 
     println!("{}", {result});
-}
+}

atcoder/beginner_contests/abc045/src/bin/d.rs

@@ -1,5 +1,68 @@
 use proconio::input;
+use std::collections::HashSet;
+use std::cmp::{min, max};
+
+fn check_subrectangle(middle: (u64, u64), painted: &HashSet<(u64, u64)>) -> u64{
+    let (y, x) = middle;
+    let mut result = 0;
+
+    for i in (x-1)..=(x+1) {
+        for j in (y-1)..=(y+1) {
+            if painted.contains(&(j, i)){
+                result += 1;
+            }
+        }
+    }
+
+    result
+}
+
+fn check_coords(painted_pair: (u64, u64), canvas_size: (u64, u64), painted: &HashSet<(u64, u64)>, checked_tiles: &mut HashSet<(u64, u64)>, result: &mut [u64; 10]){
+    let (y, x) = painted_pair;
+    let (h, w) = canvas_size;
+
+    for i in max(2, x - 1)..=min(x + 1, w - 1) {
+        for j in max(2, y - 1)..=min(y + 1, h - 1){
+            if !checked_tiles.contains(&(j, i)) {
+                result[check_subrectangle((j, i), painted) as usize] += 1;
+                checked_tiles.insert((j, i));
+
+                // println!("({},{})", {j}, {i});
+            }
+        }
+    }
+}
 
 fn main() {
-    todo!();
+    input!{
+        h: u64,
+        w: u64,
+        n: u64,
+        ab_pairs: [(u64, u64); n],
+    };
+
+    let mut painted = HashSet::new();
+    let mut checked_tiles = HashSet::new();
+    let mut result = [0; 10];
+
+    for i in 0..n {
+        painted.insert(ab_pairs[i as usize]);
+    }
+
+    for i in 0..n{
+        let coord = ab_pairs[i as usize];
+        check_coords(coord, (h, w), &painted, &mut checked_tiles, &mut result);
+    }
+
+    // for r in result {
+    //     println!("{}", {r});
+    // }
+
+    let max_rectangles = (h - 2) * (w - 2);
+    let current_rectangles : u64 = result.iter().sum();
+    result[0] += max_rectangles - current_rectangles;
+
+    for r in &result {
+        println!("{}", {r});
+    }
 }