diff --git a/day14/Cargo.lock b/day14/Cargo.lock
new file mode 100644
index 0000000..c3eb0f2
--- /dev/null
+++ b/day14/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day14"
+version = "0.1.0"
diff --git a/day14/Cargo.toml b/day14/Cargo.toml
new file mode 100644
index 0000000..85aa832
--- /dev/null
+++ b/day14/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "day14"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/day14/input.txt b/day14/input.txt
new file mode 100644
index 0000000..c91a439
--- /dev/null
+++ b/day14/input.txt
@@ -0,0 +1,151 @@
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+474,166 -> 478,166
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+484,44 -> 489,44
+484,39 -> 484,38 -> 484,39 -> 486,39 -> 486,33 -> 486,39 -> 488,39 -> 488,30 -> 488,39 -> 490,39 -> 490,35 -> 490,39 -> 492,39 -> 492,38 -> 492,39 -> 494,39 -> 494,30 -> 494,39 -> 496,39 -> 496,36 -> 496,39
+484,39 -> 484,38 -> 484,39 -> 486,39 -> 486,33 -> 486,39 -> 488,39 -> 488,30 -> 488,39 -> 490,39 -> 490,35 -> 490,39 -> 492,39 -> 492,38 -> 492,39 -> 494,39 -> 494,30 -> 494,39 -> 496,39 -> 496,36 -> 496,39
+489,115 -> 489,119 -> 481,119 -> 481,126 -> 494,126 -> 494,119 -> 493,119 -> 493,115
+481,92 -> 481,96 -> 476,96 -> 476,99 -> 487,99 -> 487,96 -> 485,96 -> 485,92
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+489,115 -> 489,119 -> 481,119 -> 481,126 -> 494,126 -> 494,119 -> 493,119 -> 493,115
+492,153 -> 496,153
+502,150 -> 507,150
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
+475,88 -> 475,89 -> 483,89 -> 483,88
+480,134 -> 480,135 -> 500,135 -> 500,134
+470,76 -> 470,80 -> 466,80 -> 466,84 -> 481,84 -> 481,80 -> 474,80 -> 474,76
+492,26 -> 492,17 -> 492,26 -> 494,26 -> 494,16 -> 494,26 -> 496,26 -> 496,22 -> 496,26 -> 498,26 -> 498,17 -> 498,26 -> 500,26 -> 500,20 -> 500,26 -> 502,26 -> 502,25 -> 502,26 -> 504,26 -> 504,23 -> 504,26 -> 506,26 -> 506,21 -> 506,26 -> 508,26 -> 508,16 -> 508,26 -> 510,26 -> 510,24 -> 510,26
+480,166 -> 484,166
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
+470,76 -> 470,80 -> 466,80 -> 466,84 -> 481,84 -> 481,80 -> 474,80 -> 474,76
+485,112 -> 485,102 -> 485,112 -> 487,112 -> 487,111 -> 487,112 -> 489,112 -> 489,105 -> 489,112
+470,49 -> 470,53 -> 468,53 -> 468,60 -> 477,60 -> 477,53 -> 476,53 -> 476,49
diff --git a/day14/src/main.rs b/day14/src/main.rs
new file mode 100644
index 0000000..d269ac0
--- /dev/null
+++ b/day14/src/main.rs
@@ -0,0 +1,97 @@
+use std::env;
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+use std::cmp::{min, max};
+
+fn parse_num(s: &[u8]) -> (usize, usize) {
+    let mut num: usize = 0;
+    let mut len = 0;
+    for i in 0..s.len() {
+        if s[i].is_ascii_digit() {
+            num = num*10 + (s[i] as usize - '0' as usize);
+            len += 1;
+        } else {
+            break;
+        }
+    }
+    (num, len)
+}
+
+fn print_map(map: &Vec<Vec<char>>) {
+    for row in map {
+        let s: String = row.iter().collect();
+        println!("{}", s);
+    }
+    println!("");
+}
+
+fn main() {
+    let file = File::open(&env::args().nth(1).expect("input")).expect("io err");
+    let lines = BufReader::new(file).lines();
+    let (mut minx, mut miny, mut maxx, mut maxy) =
+        (usize::MAX, usize::MAX, 0, 0);
+    let mut lists: Vec<Vec<(usize, usize)>> = Vec::new();
+
+    for line in lines.flatten() {
+        let l_bytes = line.as_bytes();
+        let mut cursor = 0;
+        let mut list: Vec<(usize, usize)> = Vec::new();
+        while cursor < l_bytes.len() {
+            let (x, lenx) = parse_num(&l_bytes[cursor..]);
+            let (y, leny) = parse_num(&l_bytes[cursor + lenx + 1..]);
+            list.push((x, y));
+            minx = if x < minx {x} else {minx};
+            miny = if y < miny {y} else {miny};
+            maxx = if x > maxx {x} else {maxx};
+            maxy = if y > maxy {y} else {maxy};
+            cursor = cursor + lenx + 1 + leny + 4;
+        }
+        lists.push(list);
+    }
+    println!("{:?} {:?} {:?} {:?}", minx, miny, maxx, maxy);
+    let mut map: Vec<Vec<char>> =
+        vec![vec!['.'; maxx - minx + 3]; maxy + 1];
+    for list in lists {
+        let (mut xprev, mut yprev) = &list[0];
+        for (x, y) in &list[1..] {
+            if *x == xprev {
+                for ty in *min(y, &yprev)..=*max(y, &yprev) {
+                    map[ty][*x - minx + 1] = '#';
+                }
+            } else if *y == yprev {
+                for tx in *min(x, &xprev)..=*max(x, &xprev) {
+                    map[*y][tx - minx + 1] = '#';
+                }
+            }
+            xprev = *x;
+            yprev = *y;
+        }
+    }
+    print_map(&map);
+
+    let mut total = 0;
+    'map: loop {
+        let (mut rockx, mut rocky) = (500, 0);
+        'rock: loop {
+            //println!("{:?}, {:?}", rockx, rocky);
+            if rockx < minx || rockx > maxx || rocky == maxy {
+                break 'map;
+            } else if map[rocky + 1][rockx + 1 - minx] == '.' {
+                rocky = rocky + 1;
+            } else if map[rocky + 1][rockx + 1 - minx - 1] == '.' {
+                rocky = rocky + 1;
+                rockx = rockx - 1;
+            } else if map[rocky + 1][rockx + 1 - minx + 1] == '.' {
+                rocky = rocky + 1;
+                rockx = rockx + 1;
+            } else {
+                map[rocky][rockx - minx + 1] = 'o';
+                total += 1;
+                //print_map(&map);
+                break 'rock;
+            }
+        }
+    }
+    print_map(&map);
+    println!("{:?}", total);
+}
diff --git a/day14/test.txt b/day14/test.txt
new file mode 100644
index 0000000..4e87bb5
--- /dev/null
+++ b/day14/test.txt
@@ -0,0 +1,2 @@
+498,4 -> 498,6 -> 496,6
+503,4 -> 502,4 -> 502,9 -> 494,9