diff --git a/tp4-obj3-meens/Makefile b/tp4-obj3-meens/Makefile
new file mode 100644
index 0000000..9992953
--- /dev/null
+++ b/tp4-obj3-meens/Makefile
@@ -0,0 +1,28 @@
+LIB_PATH=$(shell heptc -where)
+OBJ=extern.c scheduler_c/scheduler.c scheduler_data_c/scheduler_data_types.c
+
+aaa:
+	heptc -target c scheduler_data.ept
+	heptc extern.epi
+	heptc -target c scheduler.ept
+	gcc -I $(LIB_PATH)/c -I . main.c extern.c -I scheduler_data_c scheduler_c/scheduler.c scheduler_data_c/scheduler_data.c
+
+al: main
+
+a: extern.epi
+	heptc $<
+	
+$(OBJ): scheduler_data.ept scheduler.ept a
+	heptc -target c scheduler_data.ept
+	heptc -target c scheduler.ept
+
+main: $(OBJ)
+	gcc -I $(LIB_PATH)/c -I . main.c $(OBJ)
+
+clean:
+	$(RM) *.log 
+	$(RM) *.epci 
+	$(RM) *.mls
+	$(RM) *.o *.obj *.obc
+	$(RM) -r *_c
+	$(RM) *.out
diff --git a/tp4-obj3-meens/extern.c b/tp4-obj3-meens/extern.c
new file mode 100644
index 0000000..b02120b
--- /dev/null
+++ b/tp4-obj3-meens/extern.c
@@ -0,0 +1,35 @@
+#include "extern.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "scheduler_data_c/scheduler_data_types.h"
+
+void Extern__deadline_miss_log_step(int data, int task_id, Extern__deadline_miss_log_out *_out)
+{
+  printf("Deadline missed: task: %i, data: %i\n", task_id, data);
+}
+
+int Extern__random_step(int max, Extern__random_out *_out)
+{
+  _out->v = (rand() % max) + 1;
+  /* _out->v = max; */
+  return _out->v;
+}
+
+void Extern__print_scheduler_state_step(Scheduler_data__scheduler_state s, Extern__print_scheduler_state_out *_out)
+{
+  printf("Scheduler state - current_date: %i\n", s.current_date);
+  for (size_t i = 0; i < Scheduler_data__ntasks; i++) {
+    int left = s.tasks[i].left;
+    if (s.tasks[i].status == 2)
+      left = 0;
+    printf("[%li] Task - status: %d - current_deadline: %i - left: %i, was_running: %i\n",
+           i, s.tasks[i].status, s.tasks[i].current_deadline, left, s.tasks[i].was_running);
+  }
+  printf("\n");
+
+}
+
+void Extern__print_mes_couilles_step(int tid, Scheduler_data__task_status ts, Scheduler_data__task_attributes ta, Scheduler_data__select_acc acc, Extern__print_mes_couilles_out *_out)
+{
+  printf("tid: %i, ts.was_running: %i, ts.current_deadline: %i, acc.sdeadline: %i\n", tid, ts.was_running, ts.current_deadline, acc.sdeadline);
+}
diff --git a/tp4-obj3-meens/extern.epi b/tp4-obj3-meens/extern.epi
new file mode 100644
index 0000000..1a9dfb9
--- /dev/null
+++ b/tp4-obj3-meens/extern.epi
@@ -0,0 +1,6 @@
+open Scheduler_data
+
+fun deadline_miss_log(date:int;task_id:int) returns ()
+fun random(max:int) returns (v:int)
+fun print_scheduler_state(s:scheduler_state) returns ()
+fun print_mes_couilles(tid:int;ts:task_status; ta:task_attributes;acc:select_acc) returns ()
diff --git a/tp4-obj3-meens/extern.h b/tp4-obj3-meens/extern.h
new file mode 100644
index 0000000..68cf742
--- /dev/null
+++ b/tp4-obj3-meens/extern.h
@@ -0,0 +1,30 @@
+#ifndef EXTERN_H
+#define EXTERN_H
+
+#include "scheduler_data_c/scheduler_data_types.h"
+
+typedef struct {
+  int data;
+  int task_id;
+} Extern__deadline_miss_log_out;
+
+typedef struct {
+    int max;
+    int v;
+} Extern__random_out;
+
+typedef struct {
+} Extern__print_scheduler_state_out;
+
+typedef struct {
+} Extern__print_mes_couilles_out;
+
+
+
+void Extern__deadline_miss_log_step(int data, int task_id, Extern__deadline_miss_log_out *_out);
+int Extern__random_step(int max, Extern__random_out *_out);
+void Extern__print_scheduler_state_step(Scheduler_data__scheduler_state s, Extern__print_scheduler_state_out *_out);
+void Extern__print_mes_couilles_step(int tid, Scheduler_data__task_status ts, Scheduler_data__task_attributes ta, Scheduler_data__select_acc acc, Extern__print_mes_couilles_out *_out);
+
+#endif // EXTERN_H
+
diff --git a/tp4-obj3-meens/extern_types.h b/tp4-obj3-meens/extern_types.h
new file mode 100644
index 0000000..863ab7d
--- /dev/null
+++ b/tp4-obj3-meens/extern_types.h
@@ -0,0 +1,6 @@
+#ifndef EXTERN_TYPES_H
+#define EXTERN_TYPES_H
+
+
+
+#endif /* EXTERN_TYPES_H */
diff --git a/tp4-obj3-meens/main.c b/tp4-obj3-meens/main.c
new file mode 100644
index 0000000..cd308f7
--- /dev/null
+++ b/tp4-obj3-meens/main.c
@@ -0,0 +1,21 @@
+#include <unistd.h>
+/* #include "scheduler_data_c/scheduler_data.h" */
+/* #include "scheduler_data_c/scheduler_data_types.h" */
+#include "scheduler_c/scheduler.h"
+#include "scheduler_c/scheduler_types.h"
+#include "stdio.h"
+
+int main() {
+    Scheduler__main_out _out;
+    Scheduler__main_mem self;
+    char buffer[100];
+
+
+    Scheduler__main_reset(&self);
+
+    while (1) {
+      fgets(buffer, 10, stdin);
+        Scheduler__main_step(&_out, &self);
+    }
+    return 0;
+}
diff --git a/tp4-obj3-meens/scheduler.ept b/tp4-obj3-meens/scheduler.ept
new file mode 100644
index 0000000..72d039f
--- /dev/null
+++ b/tp4-obj3-meens/scheduler.ept
@@ -0,0 +1,109 @@
+open Scheduler_data
+open Extern
+
+fun select_aux(ts:task_status; ta:task_attributes;tid:int ;acc:select_acc)
+  returns (acc_o:select_acc)
+let
+  () = print_mes_couilles(tid, ts, ta, acc);
+  acc_o =
+  if (ts.was_running = 1 and ts.status = Ready) and (ts.current_deadline = acc.sdeadline) then
+      { tid = tid; sdeadline = ts.current_deadline; swas_running = ts.was_running }
+  else if (ts.status = Ready) and (ts.current_deadline < acc.sdeadline) then
+      { tid = tid; sdeadline = ts.current_deadline; swas_running = 0 }
+    else acc
+tel
+
+fun select_one_task(ts:task_status^ntasks) returns(selected:int)
+  var tmp : select_acc ;
+let
+  tmp = foldi<<ntasks>> select_aux (ts,tasks,{ tid = ntasks; sdeadline = int_max; swas_running=0 }) ;
+  selected = tmp.tid ;
+tel
+
+fun start_inst(current_date:int;tsi:task_status;ta:task_attributes)
+  returns (tso:task_status)
+  var c : bool ;
+let
+  c = (current_date-ta.first_start)%ta.period = 0 ;
+  tso = merge c
+    (true -> {
+      was_running = 0;
+      status = Ready;
+      current_deadline = (current_date when c) + (ta.deadline when c);
+      left = (ta.capacity when c)
+    })
+    (false -> tsi whenot c)
+tel
+
+fun update_selected(ts:task_status;selected:int;tid:int) returns (tso:task_status)
+let
+  tso =
+    if tid = selected then
+      { ts with .status = Running }
+    else ts
+tel
+
+fun rate_monotonic(ts:task_status^ntasks) returns (tso:task_status^ntasks)
+  var selected : int ;
+let
+  selected = select_one_task(ts) ;
+  tso = mapi<<ntasks>> update_selected (ts, selected^ntasks) ;
+tel
+
+fun check_deadline(current_date:int; tsi:task_status; tid:int)
+  returns (tso:task_status)
+  var c: bool ;
+let
+  c = (tsi.status = Ready)
+    and (tsi.current_deadline = current_date) ;
+  () = deadline_miss_log(current_date when c, tid when c) ;
+  tso = if c then { tsi with .status = Waiting} else tsi ;
+tel
+
+fun simulate(tsi:task_status)
+  returns (o:task_status)
+let
+  o =
+    if tsi.status = Running then
+      if tsi.left <=1 then
+        (* Normal termination, move to Waiting state *)
+        { status = Waiting; was_running = 0; current_deadline = tsi.current_deadline; left = tsi.left }
+      else
+        (* No termination, yet *)
+        {
+          was_running = 1;
+          status = Ready;
+          current_deadline = tsi.current_deadline ;
+          left = tsi.left - 1
+        }
+    else tsi
+tel
+
+fun scheduler(si:scheduler_state) returns (so:scheduler_state)
+  var
+    new_date : int ;
+    tmp1,tmp2,tmp3,fin: task_status^ntasks ;
+let
+  new_date = si.current_date + 1 ; (* advance time by 1 *)
+  tmp1 = map <<ntasks>> simulate (si.tasks) ;
+  tmp2 = mapi<<ntasks>> check_deadline (new_date^ntasks,tmp1);
+  tmp3 = map <<ntasks>> start_inst (new_date^ntasks,tmp2,tasks);
+  fin = rate_monotonic(tmp3) ; (* scheduling policy *)
+  so = { current_date = new_date; tasks = fin }
+tel
+
+
+const init_sstate : scheduler_state = {
+  current_date = -1 ;
+  tasks = {
+    was_running=0;status=Waiting;current_deadline=0;left=0
+  }^2
+}
+
+node main() returns ()
+  var sstate, new_sstate : scheduler_state ;
+let
+  new_sstate = scheduler(sstate) ;
+  sstate = init_sstate fby new_sstate ;
+  () = print_scheduler_state(new_sstate) ;
+tel
diff --git a/tp4-obj3-meens/scheduler_data.ept b/tp4-obj3-meens/scheduler_data.ept
new file mode 100644
index 0000000..e776959
--- /dev/null
+++ b/tp4-obj3-meens/scheduler_data.ept
@@ -0,0 +1,29 @@
+const ntasks : int = 2
+const int_max : int = 10000000
+
+type task_attributes = {
+  period : int ;
+  capacity : int ;
+  deadline : int ;
+  first_start : int 
+  }
+
+type task_state = Running | Ready | Waiting
+type task_status = {
+  was_running : int;
+  status : task_state ;
+  current_deadline : int ;
+  left : int
+}
+
+type scheduler_state = {
+  current_date : int ;
+  tasks : task_status^ntasks
+}
+
+type select_acc = { tid : int; swas_running: int; sdeadline : int }
+
+const tasks : task_attributes^ntasks = [
+  { period=5; capacity=2; deadline=5; first_start=0 },
+  { period=7; capacity=4; deadline=7; first_start=3 }
+]