diff --git a/2020/01/input b/2020/01/input
new file mode 100644
index 0000000..594a991
--- /dev/null
+++ b/2020/01/input
@@ -0,0 +1,200 @@
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diff --git a/2020/01/solution1.js b/2020/01/solution1.js
new file mode 100644
index 0000000..fd521ae
--- /dev/null
+++ b/2020/01/solution1.js
@@ -0,0 +1,25 @@
+const fs = require("fs");
+
+const filename = "input";
+
+async function main() {
+  const file = await fs.promises.readFile(filename, "utf-8");
+  const expenses = file.split("\n").map((num) => parseInt(num));
+  console.log(expenses);
+
+  for (let i = 0; i < expenses.length; i++) {
+    const a = expenses[i];
+    const counterpart = 2020 - a;
+    for (let j = 0; j < expenses.length; j++) {
+      const b = expenses[j];
+      for (let k = 0; k < expenses.length; k++) {
+        const c = expenses[k];
+        if (a + b + c === 2020) {
+          console.log(a, b, c, a * b * c);
+        }
+      }
+    }
+  }
+}
+
+main();