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diff --git a/2025/aoc2025-d03.py b/2025/aoc2025-d03.py
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+++ b/2025/aoc2025-d03.py
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+#advent of code 2025
+#day 03
+part1=0;
+part2=0;
+
+def joltage(bank,limit):
+	i=0;
+	jolt=0;
+	for bat_ID in range(1-limit,0):
+		battery=max(bank[:bat_ID]);
+		i=bank[:bat_ID].index(battery);
+		bank=bank[i+1:];
+		jolt+=battery*(10**(-bat_ID));
+	jolt+=max(bank);
+	return jolt;
+
+PuzzleInput=open("03.in","r");
+for il,line in enumerate(PuzzleInput):
+	line=line.replace("\n","");
+	bank=[int(c) for c in line];
+	part1+=joltage(bank,2);
+	part2+=joltage(bank,12);
+
+print("part 1",part1);
+print("part 2",part2);