diff --git a/.gitignore b/.gitignore
index 088ba6b..28fda21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,9 @@ Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+id.txt
+
+**/.idea
+*.iml
+*/target
diff --git a/day1/Cargo.toml b/day1/Cargo.toml
new file mode 100644
index 0000000..dd857c6
--- /dev/null
+++ b/day1/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "day1"
+version = "0.1.0"
+authors = ["henine <matija@rezar.biz>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/day1/input b/day1/input
new file mode 100644
index 0000000..adf8a03
--- /dev/null
+++ b/day1/input
@@ -0,0 +1,200 @@
+1993
+1715
+1997
+1666
+1676
+1830
+1203
+1800
+1125
+1191
+1902
+1972
+1471
+1137
+2003
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+1548
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diff --git a/day1/src/main.rs b/day1/src/main.rs
new file mode 100644
index 0000000..974bc83
--- /dev/null
+++ b/day1/src/main.rs
@@ -0,0 +1,32 @@
+use std::vec::Vec;
+use std::io;
+
+fn main() {
+    let mut numbers: Vec<i32> = Vec::new();
+
+    let mut line = String::new();
+
+    loop {
+        match io::stdin().read_line(&mut line) {
+            Ok(0) => {
+                break;
+            }
+            Ok(_n) => {
+                println!("{}", line);
+                numbers.push(line.trim().parse().unwrap());
+                line.truncate(0);
+            }
+            Err(error) => println!("error: {}", error),
+        }
+    }
+
+    for i in 0..numbers.len() - 2 {
+        for j in i + 1..numbers.len() - 1 {
+            for k in j + 1..numbers.len() {
+                if numbers[i] + numbers[j] + numbers[k] == 2020 {
+                    println!("{}", numbers[i] * numbers[j] * numbers[k]);
+                };
+            }
+        }
+    }
+}
diff --git a/day2/Cargo.toml b/day2/Cargo.toml
new file mode 100644
index 0000000..cf3bc10
--- /dev/null
+++ b/day2/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "day2"
+version = "0.1.0"
+authors = ["henine <matija@rezar.biz>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+scan_fmt = "*"
diff --git a/day2/input b/day2/input
new file mode 100644
index 0000000..254d8f0
--- /dev/null
+++ b/day2/input
@@ -0,0 +1,1000 @@
+2-5 z: zzztvz
+2-8 d: pddzddkdvqgxndd
+4-14 r: rrrjrrrrrrbrrccrr
+2-7 r: zrgsnrr
+9-10 z: zzzxwzznpd
+8-13 g: gggggggxgggghggg
+1-6 c: xcccxcccccz
+3-4 b: bxbt
+8-11 d: dddddddzddv
+4-14 m: kxdmmmdmfwmmmdfr
+16-17 g: ggggggggggggggggg
+2-3 f: ddvdlff
+9-11 g: ggggpfgggggg
+7-8 c: fdhctccc
+3-6 c: tmcdcncqcvccg
+2-3 l: clllll
+1-9 b: bbbbbbbbbb
+10-15 w: wglmwwwrnnzgwhhwvvd
+10-14 g: ggggggxsgggqggg
+9-19 q: fjlqbvtdngwvtbnsgfm
+1-2 k: kgbkkv
+4-10 m: mmmmtmmmmgm
+3-4 h: hplh
+5-7 q: qqqqrqk
+3-12 v: zbvlbpxcrnvvwjpwl
+1-4 r: crrr
+4-5 h: hhhrj
+2-4 r: mhrr
+9-10 c: pccccsccbk
+10-16 n: drnhqnnnnqnnpxmh
+5-6 v: vvvnvvg
+11-12 c: ccccgcccccpc
+5-10 b: bdbjbbfmfbb
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+5-19 v: vvvvvqrvvfvgvvvvmvv
+3-9 d: dddgztdljb
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+2-4 w: tmwg
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+3-11 s: sjtsssssksbs
+1-5 v: hvvtmvgvv
+3-12 g: ggvgkgfgggghgg
+3-4 p: ccpp
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+8-16 k: kkkkkkkkkkkkkwkkkk
+8-9 x: wxbrxfdrw
+7-9 n: nnnfnnnnn
+7-11 w: wwwwxwwwwwzxw
+6-9 n: nknnhnnnnlnnn
+10-12 l: qllllllllqbl
+17-19 p: pppppppppppppwppkpp
+4-5 q: qqqqqq
+7-15 v: vvvbmbjvjznzdhfvtn
+3-12 w: wwwwwdwwwwwwtwwwww
+7-10 x: mmgmknpvdbxdl
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+5-13 q: qqqqcqqqxqrqg
+3-7 l: lhlmhzl
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+5-6 j: rjppzvjdjj
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+2-3 l: llll
+19-20 j: jjjjjjjjjjjjjjjjjrjj
+3-14 n: crnnrgpmxxlrfljk
+2-4 t: stpr
+11-13 c: cctcccccccccccc
+5-6 q: fqqqqqdwtwqjq
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+8-16 j: njjgsjjljktjcbjvjc
+3-6 c: swjccc
+5-7 h: ghvwjmzm
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+10-11 f: ffffkfffcfxff
+3-4 m: mmmmkjvzmkp
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+1-2 c: ccqjmc
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+5-18 c: ccdcxtccccccpcfccv
+6-11 w: qdwnfhzlwwwwxwwgwhwk
+1-6 d: fddddddhddw
+7-10 p: wpbppvpzwc
+12-14 k: kkkkkkkkkkhhkslsk
+4-7 r: hdrrfhrqrdmcbnlrrjbr
+7-10 b: bbbbbjbbbbbb
+4-7 p: pzppzppsp
+11-12 h: qhhhhhhqhrlwlhhthh
+6-9 s: sbssxsskswvp
+17-18 b: bbmpbbhhbnsbbbbbbb
+8-9 g: wgggktggg
+1-12 s: vsssssfssssrqk
+2-5 s: bsgssxc
+3-4 c: ccccccc
+2-3 d: dddd
+5-7 r: ldlcjrrlrngr
+5-10 m: msmjqmmmmm
+3-7 c: ccccccccc
+13-14 p: pppxpppppppppcpppp
+2-3 r: jrfrvrk
+11-12 g: gggggggggggg
+6-18 t: ctvqgcrgnxdvbzjfrrbt
+6-11 f: rnjptfnwgxfp
+5-8 w: wwwtwwwwww
+14-15 r: rkrbrvrrrgrczrz
+12-13 t: trtjtttlnxnxx
+5-8 l: qnwllfsl
+2-15 g: xgtcjftlqqfwkggpf
+11-16 j: jjjjjjjjjljjjjjjj
+8-9 b: bbzbkbbvgcbb
+5-6 r: dvkxrrsvrrksszsdr
+12-13 j: jjjjjjjjjjjhdjjj
+16-17 z: mzzzrxfzzzzczzgzz
+2-15 p: lpjxcdzjmnghfppr
+9-15 s: ssssssssnsssssss
+1-11 t: tfvtqvlbtld
+4-5 k: kkkczkkkvkkk
+2-7 p: ptphppvppppp
diff --git a/day2/src/main.rs b/day2/src/main.rs
new file mode 100644
index 0000000..883339d
--- /dev/null
+++ b/day2/src/main.rs
@@ -0,0 +1,46 @@
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+
+#[macro_use]
+extern crate scan_fmt;
+
+fn main() {
+    let file = match File::open("input") {
+        Ok(file) => file,
+        Err(e) => panic!(e)
+    };
+
+    let input_buffer = BufReader::new(&file);
+
+
+    let mut count = 0;
+
+    for line_result in input_buffer.lines() {
+        let line = line_result.unwrap();
+        if match scan_fmt!(&line, "{d}-{d} {}: {}", i32,i32,char, String) {
+            Ok((min_occ, max_occ, letter, password)) => is_correct2(min_occ as usize, max_occ as usize, letter, &password),
+            Err(e) => panic!(e)
+        } {
+            count += 1;
+        }
+    }
+
+    println!("{}", count);
+}
+
+fn is_correct(min_occ: i32, max_occ: i32, letter: char, password: &String) -> bool {
+    let mut count = 0;
+
+    for c in password.chars() {
+        if c == letter {
+            count += 1;
+        }
+    }
+
+
+    count >= min_occ && count <= max_occ
+}
+
+fn is_correct2(p1: usize, p2: usize, letter: char, password: &String) -> bool {
+    (password.as_bytes()[p1-1] == letter as u8) ^ (password.as_bytes()[p2-1] == letter as u8)
+}
\ No newline at end of file
diff --git a/day3/Cargo.toml b/day3/Cargo.toml
new file mode 100644
index 0000000..4c90f72
--- /dev/null
+++ b/day3/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "day3"
+version = "0.1.0"
+authors = ["henine <matija@rezar.biz>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/day3/input b/day3/input
new file mode 100644
index 0000000..1c7e862
--- /dev/null
+++ b/day3/input
@@ -0,0 +1,323 @@
+.........###......#...#.......#
+.#.#...........#..#..#.........
+#.......#.................#....
+.........#.#.........#......###
+.....#......##...##............
+...##...#......#.....#.....##..
+#.#..#....#...#....#......#....
+........##.....#.....#.#.......
+......#.....#......#...##.#....
+...####...#.......##.....#.#...
+.........#....#......##........
+..##...........###.#...........
+.....#............#............
+#.#..#..##........#.....#..#...
+.....................#....##..#
+...........##.....###...#.#.#..
+..#......#...........#.........
+.##.##...#...#......##.#.......
+......#..#......#.#.#..#.#.....
+........#.#..#..........#...#.#
+...........##...........#....#.
+...........#...##.#............
+.......#...........#...........
+.......#......#..#...#....#..#.
+..#.....#.#....#.#......#...#.#
+.#..........###..#....#........
+........##..#..#...#..#....#..#
+#..........#...#..#.#........#.
+..#.#........##.##....##.#.....
+#.##....#...#.......#.#..#....#
+......##...#.#.#.#.....#....#..
+..........#..............#.....
+....................###.#......
+#.....#...#...#.#.......#....#.
+.......#..#...................#
+........##.##........#......#..
+...#...##.#...#...........#....
+..#.........#...#....##......#.
+......#..............#..#..#.#.
+.....##...#...#...##....#......
+#.#....#...#......##.....#...##
+.#...#.#..................#....
+#.##.....#......#..........#...
+..#..#.......#.................
+..#.....#.........#........#...
+.......#...##.##.#..#..##.#..#.
+#.............#.........#.#....
+..#..##..........#..#..##.#.#..
+.#......#.......#...#.....##.#.
+.....#......#...#...........###
+..........#.........#.....#....
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+......#..#..#..............#...
+.#.####..#...##...#.#..........
+..#....#.......#........#.....#
+....#.##.....#..#.....#.#.#..#.
+.......#..#..##.......#........
+.#.....#...........#.....#.....
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+.#.....#........#.....#..#.....
+..#..........#...#......##..#..
+.#............#.........#....#.
+........#..###.......#.....###.
+##.#...#.#..#..#..#.#.##...#...
+.#....#...#..#......##.........
+.............##.....##.........
+.....##.#..###.#....#...#...#.#
+#........#...#......#...#.##...
+#....#......#.....###.##.#.....
+.....#..#.#.##....#..##.....##.
+....#...#...#..........##......
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+#.........#.##.............#..#
+.....#.........##.#...#.#.#....
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+....#....#....#....#.......###.
+....#...#..##....#..##..#...##.
+.###......#...........###......
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+.#..#..#..#..#.#...#...#.......
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+.#..##....#.....#...........##.
+.......##....#.#........#......
+..#.#.#....#...................
+.#...#.......#...#.#......#....
+..##.##..##...........###......
+#...#......#.......#...........
+#....##.#.......#.........#....
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+..##.##...........#.........##.
+#.#...#..........#.#....#....##
+.....#.....#..##..#............
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+.........#..#..#....#..##......
+....#..........#...##........#.
+..........#..#....#.....#....#.
+.#.#.................#....#....
+.......#......#.....#...##.....
+....#..............#...........
+###...........##.#...........#.
+...####.......#...#....#.#...#.
+..##.#................#........
+...#..#....#.....#.....##..#...
+##.#....#....##..........#.#..#
+...#....#.....#................
+..#...#....#..#..#.##.##..#....
+....#....#.##.....#...#......#.
+......#................#..#..#.
+...##..#...#....#.#.....#..#...
+#...#..............#.#.....#.#.
+....#.........#.##...#.#....#..
+..................#..##.#......
+.#.....#.....#.............#..#
+..........####....###..##...#..
+......#........#...#......##..#
+#......#.#..........#....#.#...
+###................#.#....#....
+#..#.##.#.............#..#.....
+.....#............#.....##.....
+....#.....#....#.........#.....
+#..#...........###.#....#......
+..#............##...#........##
+..#....#..#....#.....#.......#.
+..#..#.#.#.##.#..#...#.....#...
+..........#..#.................
+...#.#......#..##........#.....
+...............#...............
+#.......#.......#....#.........
+#...........#....#.............
+....#..#..........#....#..##...
+.........#.#.#.........#......#
+.....#...##.....#.#.......#...#
+.........#....#...#.......#....
diff --git a/day3/src/main.rs b/day3/src/main.rs
new file mode 100644
index 0000000..59c1502
--- /dev/null
+++ b/day3/src/main.rs
@@ -0,0 +1,45 @@
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+
+fn main() {
+    let file = match File::open("input") {
+        Ok(file) => file,
+        Err(e) => panic!(e)
+    };
+
+    let input_buffer = BufReader::new(&file);
+
+
+    let mut count: [u32; 5] = [0, 0, 0, 0, 0];
+
+    let mut line_n = 0;
+
+    for line_result in input_buffer.lines() {
+        let line_string = line_result.unwrap();
+        let line = line_string.as_bytes();
+
+        if line[(1 * line_n) % line.len()] == '#' as u8 {
+            count[0] += 1;
+        }
+
+        if line[(3 * line_n) % line.len()] == '#' as u8 {
+            count[1] += 1;
+        }
+
+        if line[(5 * line_n) % line.len()] == '#' as u8 {
+            count[2] += 1;
+        }
+
+        if line[(7 * line_n) % line.len()] == '#' as u8 {
+            count[3] += 1;
+        }
+
+        if line_n % 2 == 0 && line[(1 * line_n/2) % line.len()] == '#' as u8 {
+            count[4] += 1;
+        }
+
+        line_n += 1;
+    }
+
+    println!("{}", count[0] * count[1] * count[2] * count[3] * count[4]);
+}