diff --git a/app/data/zadanie01/sum.txt b/app/data/zadanie01/sum.txt
index e69de29..615088b 100644
--- a/app/data/zadanie01/sum.txt
+++ b/app/data/zadanie01/sum.txt
@@ -0,0 +1 @@
+108
\ No newline at end of file
diff --git a/app/zadanie01.js b/app/zadanie01.js
index 8c20173..1d0fdab 100644
--- a/app/zadanie01.js
+++ b/app/zadanie01.js
@@ -1 +1,19 @@
-//Twój kod
\ No newline at end of file
+const fs = require("fs");
+
+fs.readFile("./app/data/zadanie01/input.json", (err, data) => {
+  if (err === null) {
+    const parsed = JSON.parse(data);
+    const sum = parsed.reduce((prev, curr) => {
+      return prev + curr;
+    });
+    fs.writeFile("./app/data/zadanie01/sum.txt", sum, err => {
+      if (err === null) {
+        console.log("Zapisano elegancko");
+      } else {
+        console.log("Coś nie pykło z tym zapisaniem");
+      }
+    });
+  } else {
+    console.log("Coś nie bangla");
+  }
+});
diff --git a/app/zadanie02.js b/app/zadanie02.js
index 8c20173..d08ef46 100644
--- a/app/zadanie02.js
+++ b/app/zadanie02.js
@@ -1 +1,19 @@
-//Twój kod
\ No newline at end of file
+const fs = require("fs");
+
+fs.readdir("./app/data/zadanie02", (err, files) => {
+  if (err === null) {
+    console.log("Działa ok, oto lista plików: ");
+    files.forEach(file => {
+      console.log(file);
+      fs.readFile(`./app/data/zadanie02/${file}`, "utf8", (err, data) => {
+        if (err === null) {
+          console.log(data);
+        } else {
+          console.log("Coś chyba z tym readFilem :/");
+        }
+      });
+    });
+  } else {
+    console.log("Nie bangla :/");
+  }
+});