diff --git a/.drone.yml b/.drone.yml
new file mode 100644
index 0000000..35f06a5
--- /dev/null
+++ b/.drone.yml
@@ -0,0 +1,87 @@
+---
+kind: pipeline
+name: testing-amd64
+
+platform:
+  arch: amd64
+
+steps:
+- name: build
+  pull: always
+  image: immawanderer/archlinux-cdev
+  commands:
+  - cmake CMakeLists.txt
+  - make
+
+
+---
+kind: pipeline
+name: notifications
+
+platform:
+  os: linux
+  arch: amd64
+
+clone:
+  disable: true
+
+trigger:
+  branch:
+    - master
+    - "release/*"
+  event:
+    - push
+    - tag
+  status:
+    - success
+    - failure
+
+depends_on:
+  - testing-amd64
+
+steps:
+  - name: discord
+    pull: always
+    image: appleboy/drone-discord:1.2.4
+    settings:
+      message: "{{#success build.status}} ✅  Build #{{build.number}} of `{{repo.name}}` succeeded.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n\n🌐 {{ build.link }} {{else}} ❌  Build #{{build.number}} of `{{repo.name}}` failed.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n\n🌐 {{ build.link }} {{/success}}\n"
+      webhook_id:
+        from_secret: discord_webhook_id
+      webhook_token:
+        from_secret: discord_webhook_token
+
+
+---
+kind: pipeline
+name: notifications-cronbuild
+
+platform:
+  os: linux
+  arch: amd64
+
+clone:
+  disable: true
+
+trigger:
+  event:
+    - cron
+  cron:
+    - hourly
+    - hourly-build
+  status:
+    - success
+    - failure
+
+depends_on:
+  - testing-amd64
+
+steps:
+  - name: discord
+    pull: always
+    image: appleboy/drone-discord:1.2.4
+    settings:
+      message: "{{#success build.status}} ✅  Build #{{build.number}} of `{{repo.name}}` succeeded.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n\n🌐 {{ build.link }} {{else}} ❌  Build #{{build.number}} of `{{repo.name}}` failed.\n\n📝 Commit by {{commit.author}} on `{{commit.branch}}`:\n``` {{commit.message}} ```\n\n🌐 {{ build.link }} {{/success}}\n"
+      webhook_id:
+        from_secret: discord_webhook_hourly_id
+      webhook_token:
+        from_secret: discord_webhook_hourly_token
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..4fd2c95
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(pjc-0x03 LANGUAGES C)
+
+add_executable(pjc-0x03 main.c minmax.c minmax.h main.h)
diff --git a/README.md b/README.md
index 55ab07d..ec3199d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # pjc-0x03
 
-[![works badge](https://cdn.jsdelivr.net/gh/nikku/works-on-my-machine@v0.2.0/badge.svg)](https://github.com/nikku/works-on-my-machine)
+[![Build Status](https://drone.dotya.ml/api/badges/wanderer/PJC-0x03/status.svg?ref=refs/heads/master)](https://drone.dotya.ml/wanderer/PJC-0x03) [![works badge](https://cdn.jsdelivr.net/gh/nikku/works-on-my-machine@v0.2.0/badge.svg)](https://github.com/nikku/works-on-my-machine)
 
 sawce of project 0x03 for c programming classes
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..53057f3
--- /dev/null
+++ b/main.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include "main.h"
+#include "minmax.h"
+
+int get_userguess(){
+    int x = -1;
+    int ok = -1;
+    while( ok != 1){
+        ok = scanf("%d", &x);
+        if(ok == EOF){
+            printf("\ncaught Ctrl+D...\n");
+            ok = 1;
+            x = 2;
+            break;
+        }
+        if(ok == 0){
+            while (fgetc(stdin) != '\n'){
+            }
+            printf("[*] give me a correct value\n");
+            printf("[*] stop gibbering around\n    my guess >>> ");
+        }
+    }
+    return x;
+}
+
+int lemmego(){
+    printf("[*] you wished to go, quitting...\n");
+    return EXIT_SUCCESS;
+}
+
+int main()
+{
+    int selection, max, min = 0;
+
+    while ( selection != 8 ) {
+        printf("\npick a choice\n");
+        printf("1 - max\n"
+               "2 - min\n"
+               "3 - multiplication\n"
+               "4 - division\n"
+               "8 - quit\n"
+               ">> ");
+
+        selection = get_userguess();
+
+        switch ( selection ) {
+            case 1:
+                max = maximum();
+                printf("maximum je %d\n", max);
+                break;
+            case 2:
+                min = minimum();
+                printf("minumum je %d\n", min);
+                break;
+            case 8:
+                lemmego();
+                return 9000;
+            default:
+                printf("invalid option\n");
+                selection = 0;
+                break;
+        }
+    }
+    return 0;
+}
diff --git a/main.h b/main.h
new file mode 100644
index 0000000..af17bfa
--- /dev/null
+++ b/main.h
@@ -0,0 +1,8 @@
+#ifndef PJC_0X03_MAIN_H
+#define PJC_0X03_MAIN_H
+
+int get_userguess();
+
+int lemmego();
+
+#endif //PJC_0X03_MAIN_H
diff --git a/minmax.c b/minmax.c
new file mode 100644
index 0000000..dd15b60
--- /dev/null
+++ b/minmax.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include "minmax.h"
+#include "main.h"
+
+int maximum()
+{
+    int x, y, z;
+    printf("Zadejte 3 cisla oddelena mezerou: ");
+    printf("** printmax **\n");
+
+    scanf("%d%d%d", &x, &y, &z);
+    int max = x;
+    if ( y > max ) {
+        max = y;
+    }
+    if ( z > max ) {
+        max = z;
+    }
+    // pokud je y vetsi, ulozime jej do max
+    // pokud je z vetsi, ulozime jej do max
+    return max;
+}
+
+int minimum()
+{
+    int selection, max, min = 0;
+
+    while ( selection != 8 ) {
+    int x, y, z;
+    printf("Zadejte 3 cisla oddelena mezerou: ");
+    printf("** printmin **\n");
+
+    scanf("%d%d%d", &x, &y, &z);
+    int min = x;
+
+    if ( y < min ) {
+        min = y;
+    }
+    if ( z < min ) {
+        min = z;
+    }
+    }
+    return min;
+}
\ No newline at end of file
diff --git a/minmax.h b/minmax.h
new file mode 100644
index 0000000..6c0a0c9
--- /dev/null
+++ b/minmax.h
@@ -0,0 +1,10 @@
+#ifndef PJC_0X03_MINMAX_H
+#define PJC_0X03_MINMAX_H
+
+//int maximum(int x, int y, int z);
+int maximum();
+
+//int minimum(int x, int y, int z);
+int minimum();
+
+#endif //PJC_0X03_MINMAX_H