diff --git a/2022/d25/ex1/ex1.py b/2022/d25/ex1/ex1.py
new file mode 100755
index 0000000..59686b9
--- /dev/null
+++ b/2022/d25/ex1/ex1.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import sys
+
+
+def solve(input: list[str]) -> str:
+    def from_snafu(input: str) -> int:
+        res = 0
+        for c in input:
+            if c == "=":
+                n = -2
+            elif c == "-":
+                n = -1
+            else:
+                n = int(c)
+            res = res * 5 + n
+        return res
+
+    def to_snafu(input: int) -> str:
+        # Base case
+        if not input:
+            return "0"
+
+        DIGITS = {
+            2: "2",
+            1: "1",
+            0: "0",
+            -1: "-",
+            -2: "=",
+        }
+
+        digits: list[int] = []
+        while input:
+            input, d = divmod(input, 5)
+            if d not in DIGITS:
+                d -= 5
+                input += 1
+            digits.append(d)
+        return "".join(DIGITS[c] for c in reversed(digits))
+
+    return to_snafu(sum(map(from_snafu, input)))
+
+
+def main() -> None:
+    input = sys.stdin.read().splitlines()
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/2022/d25/ex1/input b/2022/d25/ex1/input
new file mode 100644
index 0000000..0f32655
--- /dev/null
+++ b/2022/d25/ex1/input
@@ -0,0 +1,125 @@
+2112
+1=210=2
+1---22==12012-2=2=
+1=1
+21=-0
+2-2=02-11==
+210=-
+202=11=-=12-2=
+1-=01-=-1=-
+1==1=20=1=12-0=2-2
+10==0==222=-1
+1100-20-=
+1=0==01-0=-1-00-201=
+100=-222
+21--20-==01-01-022
+2100-1=2-==11
+1=-0=21=2=1112102-
+2==02220200=-100
+1=
+1=12----0==121
+221===
+10--21-21-2010
+120-000122-20122-=
+1-2=01020-=--2
+100-0-12=0101=1==2
+220=-2-011-=12=0
+1=-=0022000-2==-
+10=-01
+1-00-02122000=-
+1===000=0
+1111
+122--=-0-2--001=0
+1==020--22
+1020-=2-1-1=010=0
+1=-=-=02-=
+2-10211-1===1
+1-12-=1-11-2002
+10110-
+11=1=0-
+12-
+102-2=22=2-=-022
+1=-2-0=2--=
+2=21=2=0-=
+2=-2212=
+1=-110222=-1-2==-1
+11122
+1=-
+2=01-1=-
+1=2=10-202==0===-0=
+2---
+1===20=--1
+1-==--1==-2-1=-2=0
+10=-=
+1-1=2=
+110
+121==0
+22000=20=
+1-1=-0-2
+20-2-21=0022-22100
+1=010-=21-=12-1
+22021000222
+10=20=2-111
+12--20=2-20
+100-==2-=10=2-1-
+1120012
+1=1202---01-1201=
+200
+100=0
+1=10=01-2-=20=01=
+1-=--22
+1-0121-==10
+110=1-1
+2-210-=0=10=1-
+111-=0-=0=2---
+1=1210==1=-1=11--
+10-01222=011=0=0=
+2120
+12-11-=212
+1==11-2-210----2
+12
+2012=-100-02-0-121-
+11-2021220-=0
+12-0-00-222
+21-1==22021-
+20-0
+1011-=1-10-=
+2-00-0
+20-2=1
+1102-=1-==211
+1102-2
+21=
+10100-1-1
+1=2-1-0
+1--2===0
+1-=01=2=-
+10-1=-202==01-1
+1-01112=2010=-=101
+211==0-0===0==1-
+1==220
+1-=1=
+1-0110-12
+21-==
+21202011--0-
+2-2
+2=
+200-=-2--1102100-0
+1-00=2-12
+1=-0--=-220212
+1-=210-=
+12110-00212--=
+20=1
+21=2=0=00
+1=22--=2==20-=
+111-1-0211-=000=01
+2-12
+10-2-120===22
+21-00
+1=2
+1-=2-
+1=-2--100202-=
+2=101122
+11=21----1--
+1---
+12-12
+1=2=0--01=---212
diff --git a/2022/d25/ex2/ex2.py b/2022/d25/ex2/ex2.py
new file mode 100755
index 0000000..918e0ec
--- /dev/null
+++ b/2022/d25/ex2/ex2.py
@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+
+def main() -> None:
+    print("There is no part two...")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/2022/d25/ex2/input b/2022/d25/ex2/input
new file mode 100644
index 0000000..0f32655
--- /dev/null
+++ b/2022/d25/ex2/input
@@ -0,0 +1,125 @@
+2112
+1=210=2
+1---22==12012-2=2=
+1=1
+21=-0
+2-2=02-11==
+210=-
+202=11=-=12-2=
+1-=01-=-1=-
+1==1=20=1=12-0=2-2
+10==0==222=-1
+1100-20-=
+1=0==01-0=-1-00-201=
+100=-222
+21--20-==01-01-022
+2100-1=2-==11
+1=-0=21=2=1112102-
+2==02220200=-100
+1=
+1=12----0==121
+221===
+10--21-21-2010
+120-000122-20122-=
+1-2=01020-=--2
+100-0-12=0101=1==2
+220=-2-011-=12=0
+1=-=0022000-2==-
+10=-01
+1-00-02122000=-
+1===000=0
+1111
+122--=-0-2--001=0
+1==020--22
+1020-=2-1-1=010=0
+1=-=-=02-=
+2-10211-1===1
+1-12-=1-11-2002
+10110-
+11=1=0-
+12-
+102-2=22=2-=-022
+1=-2-0=2--=
+2=21=2=0-=
+2=-2212=
+1=-110222=-1-2==-1
+11122
+1=-
+2=01-1=-
+1=2=10-202==0===-0=
+2---
+1===20=--1
+1-==--1==-2-1=-2=0
+10=-=
+1-1=2=
+110
+121==0
+22000=20=
+1-1=-0-2
+20-2-21=0022-22100
+1=010-=21-=12-1
+22021000222
+10=20=2-111
+12--20=2-20
+100-==2-=10=2-1-
+1120012
+1=1202---01-1201=
+200
+100=0
+1=10=01-2-=20=01=
+1-=--22
+1-0121-==10
+110=1-1
+2-210-=0=10=1-
+111-=0-=0=2---
+1=1210==1=-1=11--
+10-01222=011=0=0=
+2120
+12-11-=212
+1==11-2-210----2
+12
+2012=-100-02-0-121-
+11-2021220-=0
+12-0-00-222
+21-1==22021-
+20-0
+1011-=1-10-=
+2-00-0
+20-2=1
+1102-=1-==211
+1102-2
+21=
+10100-1-1
+1=2-1-0
+1--2===0
+1-=01=2=-
+10-1=-202==01-1
+1-01112=2010=-=101
+211==0-0===0==1-
+1==220
+1-=1=
+1-0110-12
+21-==
+21202011--0-
+2-2
+2=
+200-=-2--1102100-0
+1-00=2-12
+1=-0--=-220212
+1-=210-=
+12110-00212--=
+20=1
+21=2=0=00
+1=22--=2==20-=
+111-1-0211-=000=01
+2-12
+10-2-120===22
+21-00
+1=2
+1-=2-
+1=-2--100202-=
+2=101122
+11=21----1--
+1---
+12-12
+1=2=0--01=---212