diff --git a/src/iosif.c b/src/iosif.c
new file mode 100644
index 0000000..1a0c640
--- /dev/null
+++ b/src/iosif.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct Element {
+    int x;
+    struct Element* next;
+} Element;
+
+void push(Element* l, int len)
+{
+    Element* current = l;
+    for (int i = 2; i <= len; ++i) {
+        Element* new_element = (Element*)malloc(sizeof(Element));
+        if (new_element == NULL) {
+            exit(EXIT_FAILURE);
+        }
+        new_element->x = i;
+        new_element->next = current->next;
+        current->next = new_element;
+        current = new_element;
+    }
+}
+
+int deleting(Element* l, int len, int step)
+{
+    Element* current = l;
+    while (len != 1) {
+        if (step == 1) {
+            Element* to_delete = current;
+            current = current->next;
+            free(to_delete);
+            --len;
+        } else {
+            for (int i = 1; i < step - 1; ++i) {
+                current = current->next;
+            }
+            Element* to_delete = current->next;
+            current->next = to_delete->next;
+            --len;
+            free(to_delete);
+            current = current->next;
+        }
+    }
+    int a = current->x;
+    free(current);
+    current = NULL;
+    return a;
+}
+
+int main()
+{
+    int n, m;
+    scanf("%d", &n);
+    scanf("%d", &m);
+    Element* mylist = (Element*)malloc(sizeof(Element));
+    if (mylist == NULL) {
+        exit(EXIT_FAILURE);
+    }
+    mylist->x = 1;
+    mylist->next = mylist;
+    push(mylist, n);
+    int ans = deleting(mylist, n, m);
+    printf("%d ", ans);
+    return 0;
+}