diff --git a/4/index.ts b/4/index.ts
deleted file mode 100644
index 7ffcf9d..0000000
--- a/4/index.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-let t = 0;
-let b1 = <HTMLElement>document.getElementsByClassName("b1")[0],
-    b2 = <HTMLElement>document.getElementsByClassName("b2")[0],
-    b3 = <HTMLElement>document.getElementsByClassName("b3")[0],
-    timer = <HTMLElement>document.getElementsByClassName("timer")[0];
-function c_timer() {
-    console.log(t);
-    t += 1;
-    if (t == 13) t = 0;
-    if (t < 6) {
-        b3.style["background-color"] = "unset";
-        b1.style["background-color"] = "red";
-        timer.innerHTML = 6-t as string;
-    }
-    else if(t<8){
-        b1.style["background-color"] = "unset";
-        b2.style["background-color"] = "green";
-        timer.innerHTML = 8-t as string;
-    }
-    else if(t<13){
-        b2.style["background-color"] = "unset";
-        b3.style["background-color"] = "yellow";
-        timer.innerHTML = 13-t as string;
-    }
-}
-setInterval(c_timer, 1000);
\ No newline at end of file
diff --git a/4/package.json b/4/package.json
deleted file mode 100644
index e8662cc..0000000
--- a/4/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "tianzhan4",
-  "version": "1.0.0",
-  "description": "Homework for tz",
-  "main": "index.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "author": "Luthics",
-  "license": "ISC",
-  "dependencies": {
-    "typescript": "^4.8.4"
-  }
-}