; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1323A-EvenSubsetSumProblem)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %10

10:                                               ; preds = %57, %0
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %2, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %58

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = icmp sle i64 %16, 1
  br i1 %17, label %18, label %26

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = and i64 %20, 1
  %22 = icmp ne i64 %21, 0
  %23 = zext i1 %22 to i64
  %24 = select i1 %22, ptr @.str.1, ptr @.str.2
  %25 = call i32 @puts(ptr noundef %24)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %57

26:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %28 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %6)
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 2, ptr %7, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %36, %26
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = load i64, ptr %3, align 8, !tbaa !5
  %32 = icmp slt i64 %30, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %39

34:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %35 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %36

36:                                               ; preds = %34
  %37 = load i64, ptr %7, align 8, !tbaa !5
  %38 = add nsw i64 %37, 1
  store i64 %38, ptr %7, align 8, !tbaa !5
  br label %29, !llvm.loop !9

39:                                               ; preds = %33
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = and i64 %40, 1
  %42 = icmp ne i64 %41, 0
  br i1 %42, label %43, label %49

43:                                               ; preds = %39
  %44 = load i64, ptr %6, align 8, !tbaa !5
  %45 = and i64 %44, 1
  %46 = icmp ne i64 %45, 0
  br i1 %46, label %47, label %49

47:                                               ; preds = %43
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %56

49:                                               ; preds = %43, %39
  %50 = load i64, ptr %5, align 8, !tbaa !5
  %51 = and i64 %50, 1
  %52 = icmp ne i64 %51, 0
  %53 = zext i1 %52 to i64
  %54 = select i1 %52, i32 2, i32 1
  %55 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %54)
  br label %56

56:                                               ; preds = %49, %47
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %57

57:                                               ; preds = %56, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %10, !llvm.loop !11

58:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

declare i32 @puts(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { mustprogress norecurse uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %8 = load i64, ptr %1, align 8, !tbaa !5
  %9 = add nsw i64 %8, -1
  store i64 %9, ptr %1, align 8, !tbaa !5
  %.not7 = icmp eq i64 %8, 0
  br i1 %.not7, label %._crit_edge10, label %.lr.ph9

.lr.ph9:                                          ; preds = %0, %39
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp slt i64 %11, 2
  br i1 %12, label %13, label %19

13:                                               ; preds = %.lr.ph9
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = and i64 %15, 1
  %.not5 = icmp eq i64 %16, 0
  %17 = select i1 %.not5, ptr @.str.2, ptr @.str.1
  %18 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %17)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  br label %39

19:                                               ; preds = %.lr.ph9
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %5)
  %22 = load i64, ptr %2, align 8, !tbaa !5
  %23 = icmp sgt i64 %22, 2
  br i1 %23, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %19
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = and i64 %24, 1
  %.not2 = icmp eq i64 %25, 0
  br i1 %.not2, label %35, label %30

.lr.ph:                                           ; preds = %19, %.lr.ph
  %.06 = phi i64 [ %27, %.lr.ph ], [ 2, %19 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %6)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  %27 = add nuw nsw i64 %.06, 1
  %28 = load i64, ptr %2, align 8, !tbaa !5
  %29 = icmp slt i64 %27, %28
  br i1 %29, label %.lr.ph, label %._crit_edge, !llvm.loop !9

30:                                               ; preds = %._crit_edge
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = and i64 %31, 1
  %.not3 = icmp eq i64 %32, 0
  br i1 %.not3, label %35, label %33

33:                                               ; preds = %30
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %38

35:                                               ; preds = %30, %._crit_edge
  %36 = phi i32 [ 2, %30 ], [ 1, %._crit_edge ]
  %37 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %36)
  br label %38

38:                                               ; preds = %35, %33
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  br label %39

39:                                               ; preds = %38, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %40 = load i64, ptr %1, align 8, !tbaa !5
  %41 = add nsw i64 %40, -1
  store i64 %41, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %40, 0
  br i1 %.not, label %._crit_edge10, label %.lr.ph9, !llvm.loop !11

._crit_edge10:                                    ; preds = %39, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nofree norecurse nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass