Start: n_eval_ndecr_start
Program_Vars: Arg_0, Arg_1, Arg_2
Temp_Vars:
Locations: n_eval_ndecr_0___13, n_eval_ndecr_1___12, n_eval_ndecr_2___11, n_eval_ndecr_3___10, n_eval_ndecr_4___9, n_eval_ndecr_bb0_in___14, n_eval_ndecr_bb1_in___5, n_eval_ndecr_bb1_in___8, n_eval_ndecr_bb2_in___4, n_eval_ndecr_bb2_in___7, n_eval_ndecr_bb3_in___3, n_eval_ndecr_bb3_in___6, n_eval_ndecr_start, n_eval_ndecr_stop___1, n_eval_ndecr_stop___2
Transitions:
0:n_eval_ndecr_0___13(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_1___12(Arg_0,Arg_1,Arg_2)
1:n_eval_ndecr_1___12(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_2___11(Arg_2-1,Arg_1,Arg_2)
2:n_eval_ndecr_2___11(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_3___10(Arg_0,Arg_1,Arg_2):|:Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
3:n_eval_ndecr_3___10(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_4___9(Arg_0,Arg_1,Arg_2):|:Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
4:n_eval_ndecr_4___9(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___8(Arg_0,Arg_0,Arg_2):|:Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
5:n_eval_ndecr_bb0_in___14(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_0___13(Arg_0,Arg_1,Arg_2)
6:n_eval_ndecr_bb1_in___5(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb2_in___4(Arg_0,Arg_1,Arg_2):|:1<Arg_1
7:n_eval_ndecr_bb1_in___5(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb3_in___3(Arg_0,Arg_1,Arg_2):|:Arg_1<=1
8:n_eval_ndecr_bb1_in___8(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb2_in___7(Arg_0,Arg_1,Arg_2):|:Arg_0<=Arg_1 && Arg_1<=Arg_0 && 1<Arg_1
9:n_eval_ndecr_bb1_in___8(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb3_in___6(Arg_0,Arg_1,Arg_2):|:Arg_0<=Arg_1 && Arg_1<=Arg_0 && Arg_1<=1
10:n_eval_ndecr_bb2_in___4(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___5(Arg_0,Arg_1-1,Arg_2):|:1<Arg_1
11:n_eval_ndecr_bb2_in___7(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___5(Arg_0,Arg_1-1,Arg_2):|:1<Arg_0 && Arg_0<=Arg_1 && Arg_1<=Arg_0
12:n_eval_ndecr_bb3_in___3(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_stop___2(Arg_0,Arg_1,Arg_2):|:Arg_1<=1
13:n_eval_ndecr_bb3_in___6(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_stop___1(Arg_0,Arg_1,Arg_2):|:Arg_0<=1 && Arg_0<=Arg_1 && Arg_1<=Arg_0
14:n_eval_ndecr_start(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb0_in___14(Arg_0,Arg_1,Arg_2)
Found invariant Arg_2<=1+Arg_1 && Arg_2<=1+Arg_0 && 3<=Arg_2 && 5<=Arg_1+Arg_2 && 1+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=Arg_0 && 2<=Arg_1 && 4<=Arg_0+Arg_1 && Arg_0<=Arg_1 && 2<=Arg_0 for location n_eval_ndecr_bb2_in___7
Found invariant Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 for location n_eval_ndecr_3___10
Found invariant Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 for location n_eval_ndecr_stop___2
Found invariant Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 for location n_eval_ndecr_bb3_in___3
Found invariant Arg_2<=1+Arg_0 && 4<=Arg_2 && 6<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 7<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && 1+Arg_1<=Arg_0 && 2<=Arg_1 && 5<=Arg_0+Arg_1 && 3<=Arg_0 for location n_eval_ndecr_bb2_in___4
Found invariant Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 for location n_eval_ndecr_bb1_in___5
Found invariant Arg_2<=2 && Arg_2<=1+Arg_1 && Arg_1+Arg_2<=3 && Arg_2<=1+Arg_0 && Arg_0+Arg_2<=3 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && Arg_1<=Arg_0 && Arg_0+Arg_1<=2 && Arg_0<=Arg_1 && Arg_0<=1 for location n_eval_ndecr_stop___1
Found invariant Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 for location n_eval_ndecr_2___11
Found invariant Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 for location n_eval_ndecr_4___9
Found invariant Arg_2<=2 && Arg_2<=1+Arg_1 && Arg_1+Arg_2<=3 && Arg_2<=1+Arg_0 && Arg_0+Arg_2<=3 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && Arg_1<=Arg_0 && Arg_0+Arg_1<=2 && Arg_0<=Arg_1 && Arg_0<=1 for location n_eval_ndecr_bb3_in___6
Found invariant Arg_2<=1+Arg_1 && Arg_2<=1+Arg_0 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=Arg_0 && Arg_0<=Arg_1 for location n_eval_ndecr_bb1_in___8
Start: n_eval_ndecr_start
Program_Vars: Arg_0, Arg_1, Arg_2
Temp_Vars:
Locations: n_eval_ndecr_0___13, n_eval_ndecr_1___12, n_eval_ndecr_2___11, n_eval_ndecr_3___10, n_eval_ndecr_4___9, n_eval_ndecr_bb0_in___14, n_eval_ndecr_bb1_in___5, n_eval_ndecr_bb1_in___8, n_eval_ndecr_bb2_in___4, n_eval_ndecr_bb2_in___7, n_eval_ndecr_bb3_in___3, n_eval_ndecr_bb3_in___6, n_eval_ndecr_start, n_eval_ndecr_stop___1, n_eval_ndecr_stop___2
Transitions:
0:n_eval_ndecr_0___13(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_1___12(Arg_0,Arg_1,Arg_2)
1:n_eval_ndecr_1___12(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_2___11(Arg_2-1,Arg_1,Arg_2)
2:n_eval_ndecr_2___11(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_3___10(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 && Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
3:n_eval_ndecr_3___10(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_4___9(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 && Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
4:n_eval_ndecr_4___9(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___8(Arg_0,Arg_0,Arg_2):|:Arg_2<=1+Arg_0 && 1+Arg_0<=Arg_2 && Arg_0+1<=Arg_2 && Arg_2<=1+Arg_0
5:n_eval_ndecr_bb0_in___14(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_0___13(Arg_0,Arg_1,Arg_2)
6:n_eval_ndecr_bb1_in___5(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb2_in___4(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 && 1<Arg_1
7:n_eval_ndecr_bb1_in___5(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb3_in___3(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 && Arg_1<=1
8:n_eval_ndecr_bb1_in___8(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb2_in___7(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_1 && Arg_2<=1+Arg_0 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=Arg_0 && Arg_0<=Arg_1 && Arg_0<=Arg_1 && Arg_1<=Arg_0 && 1<Arg_1
9:n_eval_ndecr_bb1_in___8(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb3_in___6(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_1 && Arg_2<=1+Arg_0 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=Arg_0 && Arg_0<=Arg_1 && Arg_0<=Arg_1 && Arg_1<=Arg_0 && Arg_1<=1
10:n_eval_ndecr_bb2_in___4(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___5(Arg_0,Arg_1-1,Arg_2):|:Arg_2<=1+Arg_0 && 4<=Arg_2 && 6<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 7<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && 1+Arg_1<=Arg_0 && 2<=Arg_1 && 5<=Arg_0+Arg_1 && 3<=Arg_0 && 1<Arg_1
11:n_eval_ndecr_bb2_in___7(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb1_in___5(Arg_0,Arg_1-1,Arg_2):|:Arg_2<=1+Arg_1 && Arg_2<=1+Arg_0 && 3<=Arg_2 && 5<=Arg_1+Arg_2 && 1+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=Arg_0 && 2<=Arg_1 && 4<=Arg_0+Arg_1 && Arg_0<=Arg_1 && 2<=Arg_0 && 1<Arg_0 && Arg_0<=Arg_1 && Arg_1<=Arg_0
12:n_eval_ndecr_bb3_in___3(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_stop___2(Arg_0,Arg_1,Arg_2):|:Arg_2<=1+Arg_0 && 3<=Arg_2 && 4<=Arg_1+Arg_2 && 2+Arg_1<=Arg_2 && 5<=Arg_0+Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && 1+Arg_1<=Arg_0 && 1<=Arg_1 && 3<=Arg_0+Arg_1 && 2<=Arg_0 && Arg_1<=1
13:n_eval_ndecr_bb3_in___6(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_stop___1(Arg_0,Arg_1,Arg_2):|:Arg_2<=2 && Arg_2<=1+Arg_1 && Arg_1+Arg_2<=3 && Arg_2<=1+Arg_0 && Arg_0+Arg_2<=3 && 1+Arg_1<=Arg_2 && 1+Arg_0<=Arg_2 && Arg_1<=1 && Arg_1<=Arg_0 && Arg_0+Arg_1<=2 && Arg_0<=Arg_1 && Arg_0<=1 && Arg_0<=1 && Arg_0<=Arg_1 && Arg_1<=Arg_0
14:n_eval_ndecr_start(Arg_0,Arg_1,Arg_2) -> n_eval_ndecr_bb0_in___14(Arg_0,Arg_1,Arg_2)
new bound:
Arg_2+1 {O(n)}
MPRF:
n_eval_ndecr_bb2_in___4 [Arg_1-1 ]
n_eval_ndecr_bb1_in___5 [Arg_1 ]
new bound:
Arg_2+2 {O(n)}
MPRF:
n_eval_ndecr_bb2_in___4 [Arg_1-1 ]
n_eval_ndecr_bb1_in___5 [Arg_1-1 ]
Overall timebound:2*Arg_2+16 {O(n)}
0: n_eval_ndecr_0___13->n_eval_ndecr_1___12: 1 {O(1)}
1: n_eval_ndecr_1___12->n_eval_ndecr_2___11: 1 {O(1)}
2: n_eval_ndecr_2___11->n_eval_ndecr_3___10: 1 {O(1)}
3: n_eval_ndecr_3___10->n_eval_ndecr_4___9: 1 {O(1)}
4: n_eval_ndecr_4___9->n_eval_ndecr_bb1_in___8: 1 {O(1)}
5: n_eval_ndecr_bb0_in___14->n_eval_ndecr_0___13: 1 {O(1)}
6: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb2_in___4: Arg_2+1 {O(n)}
7: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb3_in___3: 1 {O(1)}
8: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb2_in___7: 1 {O(1)}
9: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb3_in___6: 1 {O(1)}
10: n_eval_ndecr_bb2_in___4->n_eval_ndecr_bb1_in___5: Arg_2+2 {O(n)}
11: n_eval_ndecr_bb2_in___7->n_eval_ndecr_bb1_in___5: 1 {O(1)}
12: n_eval_ndecr_bb3_in___3->n_eval_ndecr_stop___2: 1 {O(1)}
13: n_eval_ndecr_bb3_in___6->n_eval_ndecr_stop___1: 1 {O(1)}
14: n_eval_ndecr_start->n_eval_ndecr_bb0_in___14: 1 {O(1)}
Overall costbound: 2*Arg_2+16 {O(n)}
0: n_eval_ndecr_0___13->n_eval_ndecr_1___12: 1 {O(1)}
1: n_eval_ndecr_1___12->n_eval_ndecr_2___11: 1 {O(1)}
2: n_eval_ndecr_2___11->n_eval_ndecr_3___10: 1 {O(1)}
3: n_eval_ndecr_3___10->n_eval_ndecr_4___9: 1 {O(1)}
4: n_eval_ndecr_4___9->n_eval_ndecr_bb1_in___8: 1 {O(1)}
5: n_eval_ndecr_bb0_in___14->n_eval_ndecr_0___13: 1 {O(1)}
6: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb2_in___4: Arg_2+1 {O(n)}
7: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb3_in___3: 1 {O(1)}
8: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb2_in___7: 1 {O(1)}
9: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb3_in___6: 1 {O(1)}
10: n_eval_ndecr_bb2_in___4->n_eval_ndecr_bb1_in___5: Arg_2+2 {O(n)}
11: n_eval_ndecr_bb2_in___7->n_eval_ndecr_bb1_in___5: 1 {O(1)}
12: n_eval_ndecr_bb3_in___3->n_eval_ndecr_stop___2: 1 {O(1)}
13: n_eval_ndecr_bb3_in___6->n_eval_ndecr_stop___1: 1 {O(1)}
14: n_eval_ndecr_start->n_eval_ndecr_bb0_in___14: 1 {O(1)}
0: n_eval_ndecr_0___13->n_eval_ndecr_1___12, Arg_0: Arg_0 {O(n)}
0: n_eval_ndecr_0___13->n_eval_ndecr_1___12, Arg_1: Arg_1 {O(n)}
0: n_eval_ndecr_0___13->n_eval_ndecr_1___12, Arg_2: Arg_2 {O(n)}
1: n_eval_ndecr_1___12->n_eval_ndecr_2___11, Arg_0: Arg_2+1 {O(n)}
1: n_eval_ndecr_1___12->n_eval_ndecr_2___11, Arg_1: Arg_1 {O(n)}
1: n_eval_ndecr_1___12->n_eval_ndecr_2___11, Arg_2: Arg_2 {O(n)}
2: n_eval_ndecr_2___11->n_eval_ndecr_3___10, Arg_0: Arg_2+1 {O(n)}
2: n_eval_ndecr_2___11->n_eval_ndecr_3___10, Arg_1: Arg_1 {O(n)}
2: n_eval_ndecr_2___11->n_eval_ndecr_3___10, Arg_2: Arg_2 {O(n)}
3: n_eval_ndecr_3___10->n_eval_ndecr_4___9, Arg_0: Arg_2+1 {O(n)}
3: n_eval_ndecr_3___10->n_eval_ndecr_4___9, Arg_1: Arg_1 {O(n)}
3: n_eval_ndecr_3___10->n_eval_ndecr_4___9, Arg_2: Arg_2 {O(n)}
4: n_eval_ndecr_4___9->n_eval_ndecr_bb1_in___8, Arg_0: Arg_2+1 {O(n)}
4: n_eval_ndecr_4___9->n_eval_ndecr_bb1_in___8, Arg_1: Arg_2+1 {O(n)}
4: n_eval_ndecr_4___9->n_eval_ndecr_bb1_in___8, Arg_2: Arg_2 {O(n)}
5: n_eval_ndecr_bb0_in___14->n_eval_ndecr_0___13, Arg_0: Arg_0 {O(n)}
5: n_eval_ndecr_bb0_in___14->n_eval_ndecr_0___13, Arg_1: Arg_1 {O(n)}
5: n_eval_ndecr_bb0_in___14->n_eval_ndecr_0___13, Arg_2: Arg_2 {O(n)}
6: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb2_in___4, Arg_0: Arg_2+1 {O(n)}
6: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb2_in___4, Arg_1: Arg_2+1 {O(n)}
6: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb2_in___4, Arg_2: Arg_2 {O(n)}
7: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb3_in___3, Arg_0: 2*Arg_2+2 {O(n)}
7: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb3_in___3, Arg_1: 1 {O(1)}
7: n_eval_ndecr_bb1_in___5->n_eval_ndecr_bb3_in___3, Arg_2: 2*Arg_2 {O(n)}
8: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb2_in___7, Arg_0: Arg_2+1 {O(n)}
8: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb2_in___7, Arg_1: Arg_2+1 {O(n)}
8: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb2_in___7, Arg_2: Arg_2 {O(n)}
9: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb3_in___6, Arg_0: Arg_2+1 {O(n)}
9: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb3_in___6, Arg_1: Arg_2+1 {O(n)}
9: n_eval_ndecr_bb1_in___8->n_eval_ndecr_bb3_in___6, Arg_2: Arg_2 {O(n)}
10: n_eval_ndecr_bb2_in___4->n_eval_ndecr_bb1_in___5, Arg_0: Arg_2+1 {O(n)}
10: n_eval_ndecr_bb2_in___4->n_eval_ndecr_bb1_in___5, Arg_1: Arg_2+1 {O(n)}
10: n_eval_ndecr_bb2_in___4->n_eval_ndecr_bb1_in___5, Arg_2: Arg_2 {O(n)}
11: n_eval_ndecr_bb2_in___7->n_eval_ndecr_bb1_in___5, Arg_0: Arg_2+1 {O(n)}
11: n_eval_ndecr_bb2_in___7->n_eval_ndecr_bb1_in___5, Arg_1: Arg_2+1 {O(n)}
11: n_eval_ndecr_bb2_in___7->n_eval_ndecr_bb1_in___5, Arg_2: Arg_2 {O(n)}
12: n_eval_ndecr_bb3_in___3->n_eval_ndecr_stop___2, Arg_0: 2*Arg_2+2 {O(n)}
12: n_eval_ndecr_bb3_in___3->n_eval_ndecr_stop___2, Arg_1: 1 {O(1)}
12: n_eval_ndecr_bb3_in___3->n_eval_ndecr_stop___2, Arg_2: 2*Arg_2 {O(n)}
13: n_eval_ndecr_bb3_in___6->n_eval_ndecr_stop___1, Arg_0: Arg_2+1 {O(n)}
13: n_eval_ndecr_bb3_in___6->n_eval_ndecr_stop___1, Arg_1: Arg_2+1 {O(n)}
13: n_eval_ndecr_bb3_in___6->n_eval_ndecr_stop___1, Arg_2: Arg_2 {O(n)}
14: n_eval_ndecr_start->n_eval_ndecr_bb0_in___14, Arg_0: Arg_0 {O(n)}
14: n_eval_ndecr_start->n_eval_ndecr_bb0_in___14, Arg_1: Arg_1 {O(n)}
14: n_eval_ndecr_start->n_eval_ndecr_bb0_in___14, Arg_2: Arg_2 {O(n)}