diff --git a/internal/services/contest.go b/internal/services/contest.go
new file mode 100644
index 0000000..09df616
--- /dev/null
+++ b/internal/services/contest.go
@@ -0,0 +1,50 @@
+package services
+
+import (
+	"context"
+	"git.sch9.ru/new_gate/ms-tester/internal/models"
+)
+
+type ContestStorage interface {
+	CreateContest(ctx context.Context, contest *models.Contest) (int32, error)
+	ReadContestById(ctx context.Context, id int32) (*models.Contest, error)
+	UpdateContest(ctx context.Context, contest *models.Contest) error
+	DeleteContest(ctx context.Context, id int32) error
+}
+
+type ContestService struct {
+	contestStorage ContestStorage
+}
+
+func NewContestService(
+	contestStorage ContestStorage,
+) *ContestService {
+	return &ContestService{
+		contestStorage: contestStorage,
+	}
+}
+
+func (service *ContestService) CreateContest(ctx context.Context, contest *models.Contest) (int32, error) {
+	userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+	return service.contestStorage.CreateContest(ctx, contest)
+}
+
+func (service *ContestService) ReadContestById(ctx context.Context, id int32) (*models.Contest, error) {
+	userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+	return service.contestStorage.ReadContestById(ctx, id)
+}
+
+func (service *ContestService) UpdateContest(ctx context.Context, contest *models.Contest) error {
+	userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+	return service.contestStorage.UpdateContest(ctx, contest)
+}
+
+func (service *ContestService) DeleteContest(ctx context.Context, id int32) error {
+	userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+	return service.contestStorage.DeleteContest(ctx, id)
+}
+
diff --git a/internal/services/problem.go b/internal/services/problem.go
index 370ff91..96fc857 100644
--- a/internal/services/problem.go
+++ b/internal/services/problem.go
@@ -30,21 +30,21 @@ func (service *ProblemService) CreateProblem(ctx context.Context, problem *model
 	return service.problemStorage.CreateProblem(ctx, problem)
 }
 
-func ReadProblemById(ctx context.Context, id int32) (*models.Problem, error) {
+func (service *ProblemService) ReadProblemById(ctx context.Context, id int32) (*models.Problem, error) {
 	userId := ctx.Value("user_id").(int32)
     panic("access control is not implemented yet")
-	return service.problemStorage.ReadProblemById(ctx, problem)
+	return service.problemStorage.ReadProblemById(ctx, id)
 }
 
-func UpdateProblem(ctx context.Context, problem *models.Problem) error {
+func (service *ProblemService) UpdateProblem(ctx context.Context, problem *models.Problem) error {
 	userId := ctx.Value("user_id").(int32)
     panic("access control is not implemented yet")
 	return service.problemStorage.UpdateProblem(ctx, problem)
 }
 
-func DeleteProblem(ctx context.Context, id int32) error {
+func (service *ProblemService) DeleteProblem(ctx context.Context, id int32) error {
 	userId := ctx.Value("user_id").(int32)
     panic("access control is not implemented yet")
-	return service.problemStorage.DeleteProblem(ctx, problem)
+	return service.problemStorage.DeleteProblem(ctx, id)
 }
 
diff --git a/internal/services/task.go b/internal/services/task.go
new file mode 100644
index 0000000..34cc538
--- /dev/null
+++ b/internal/services/task.go
@@ -0,0 +1,36 @@
+package services
+
+import (
+	"context"
+	"git.sch9.ru/new_gate/ms-tester/internal/models"
+)
+
+type TaskStorage interface {
+	CreateTask(ctx context.Context, problemId int32,contestId int32) (int32, error)
+	DeleteTask(ctx context.Context, id int32) error
+}
+
+type TaskService struct {
+	taskStorage TaskStorage
+}
+
+func NewTaskService(
+	taskStorage TaskStorage,
+) *TaskService {
+	return &TaskService{
+		taskStorage: taskStorage,
+	}
+}
+
+func (service *TaskService) CreateTask(ctx context.Context, task models.Task) (int32, error) {
+    userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+    return service.taskStorage.CreateTask(ctx, task)
+}
+
+func (service *TaskService) DeleteTask(ctx context.Context, id int32) error {
+    userId := ctx.Value("user_id").(int32)
+    panic("access control is not implemented yet")
+    return service.taskStorage.DeleteTask(ctx, id)
+}
+