diff --git a/.gitignore b/.gitignore
index 47e34cf..e6c9508 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 input.txt
+testinput.txt
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/day01/day01.py b/day01/day01.py
index 9f69ffd..4e4c651 100644
--- a/day01/day01.py
+++ b/day01/day01.py
@@ -17,12 +17,34 @@ def read_input(file_name):
 
 class Frequency:
     def __init__(self):
-        self.currentFrequency = 0
+        self.current_frequency = 0
+        self.first_rep = None
 
-    def calibrate(self, num: int): 
-        pass
+    def calibration(self, num: int):
+        self.current_frequency  += num
 
+    def detect_first_rep(self, inputs):
+        freq_dict = {}
+        self.current_frequency = 0
 
-# put your inputs file next to this file!
-lines = read_input('input.txt');
-# solve the problem here!
\ No newline at end of file
+        while (1):
+            for freq in inputs:
+                self.calibration(freq)
+                if self.current_frequency in freq_dict:
+                    self.first_rep = self.current_frequency
+                    return
+                else:
+                    freq_dict[self.current_frequency] = None
+
+
+f = Frequency()
+inputs = read_input('input.txt')
+
+for freq in inputs:
+    f.calibration(freq)
+
+print("The sum of all frequencies is ", f.current_frequency)
+
+f.detect_first_rep(inputs)
+
+print("The first repeating frequency is ", f.first_rep)
\ No newline at end of file
diff --git a/day02/day02.py b/day02/day02.py
index 7ea619d..80d8fa4 100644
--- a/day02/day02.py
+++ b/day02/day02.py
@@ -12,6 +12,24 @@ def read_input(file_name):
         print(f"An error occurred: {e}")
     return lines
 
-#a
+
 lines = read_input('input.txt')
-# solve the problem here!
\ No newline at end of file
+cnt_two = 0
+cnt_three = 0
+
+flag_two = False
+flag_three = False
+
+for idn in lines:
+    char_dict = {}
+    for char in idn:
+        if char in char_dict:
+            char_dict[char] += 1
+        else:
+            char_dict[char] = 1
+    if 2 in char_dict.values():
+        cnt_two += 1
+    if 3 in char_dict.values():
+        cnt_three += 1
+
+print("checksum: ", cnt_two * cnt_three)
\ No newline at end of file