Submit Text on CSES

Submit on CSES with pasting

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Submit Text on CSES
// @namespace    plantt
// @version      2025-11-27
// @description  Submit on CSES with pasting
// @author       You
// @match        https://cses.fi/problemset/submit/*
// @grant        none
// @license      GPL
// ==/UserScript==

let fileInput = document.querySelector("input[name=file]");
let lang = document.getElementById("lang");
let textarea = document.createElement("textarea");
fileInput.parentElement.parentElement.insertBefore(textarea, fileInput.parentElement.nextElementSibling);
if (localStorage.getItem("cses-lang")) {
    lang.value = localStorage.getItem("cses-lang");
    lang.dispatchEvent(new Event("change"));
}
lang.onchange = () => localStorage.setItem("cses-lang", lang.value);
textarea.oninput = () => {
    let datat = new DataTransfer;
    datat.items.add(new File([textarea.value], "source.txt"));
    fileInput.files = datat.files;
};