; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1352B-SameParitySummands)

; 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 [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %8

8:                                                ; preds = %72, %0
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %2, align 8, !tbaa !5
  %11 = icmp ne i64 %9, 0
  br i1 %11, label %12, label %73

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = srem i64 %14, 2
  %16 = load i64, ptr %4, align 8, !tbaa !5
  %17 = srem i64 %16, 2
  %18 = icmp eq i64 %15, %17
  br i1 %18, label %19, label %41

19:                                               ; preds = %12
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = load i64, ptr %4, align 8, !tbaa !5
  %22 = icmp sge i64 %20, %21
  br i1 %22, label %23, label %41

23:                                               ; preds = %19
  %24 = call i32 @puts(ptr noundef @.str.2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 1, ptr %5, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %32, %23
  %26 = load i64, ptr %5, align 8, !tbaa !5
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = icmp slt i64 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %35

30:                                               ; preds = %25
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %32

32:                                               ; preds = %30
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = add nsw i64 %33, 1
  store i64 %34, ptr %5, align 8, !tbaa !5
  br label %25, !llvm.loop !9

35:                                               ; preds = %29
  %36 = load i64, ptr %3, align 8, !tbaa !5
  %37 = load i64, ptr %4, align 8, !tbaa !5
  %38 = sub nsw i64 %36, %37
  %39 = add nsw i64 %38, 1
  %40 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %39)
  br label %72

41:                                               ; preds = %19, %12
  %42 = load i64, ptr %3, align 8, !tbaa !5
  %43 = srem i64 %42, 2
  %44 = icmp eq i64 %43, 0
  br i1 %44, label %45, label %69

45:                                               ; preds = %41
  %46 = load i64, ptr %3, align 8, !tbaa !5
  %47 = load i64, ptr %4, align 8, !tbaa !5
  %48 = mul nsw i64 2, %47
  %49 = icmp sge i64 %46, %48
  br i1 %49, label %50, label %69

50:                                               ; preds = %45
  %51 = call i32 @puts(ptr noundef @.str.2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 1, ptr %6, align 8, !tbaa !5
  br label %52

52:                                               ; preds = %59, %50
  %53 = load i64, ptr %6, align 8, !tbaa !5
  %54 = load i64, ptr %4, align 8, !tbaa !5
  %55 = icmp slt i64 %53, %54
  br i1 %55, label %57, label %56

56:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %62

57:                                               ; preds = %52
  %58 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  br label %59

59:                                               ; preds = %57
  %60 = load i64, ptr %6, align 8, !tbaa !5
  %61 = add nsw i64 %60, 1
  store i64 %61, ptr %6, align 8, !tbaa !5
  br label %52, !llvm.loop !11

62:                                               ; preds = %56
  %63 = load i64, ptr %3, align 8, !tbaa !5
  %64 = load i64, ptr %4, align 8, !tbaa !5
  %65 = mul nsw i64 2, %64
  %66 = sub nsw i64 %63, %65
  %67 = add nsw i64 %66, 2
  %68 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %67)
  br label %71

69:                                               ; preds = %45, %41
  %70 = call i32 @puts(ptr noundef @.str.6)
  br label %71

71:                                               ; preds = %69, %62
  br label %72

72:                                               ; preds = %71, %35
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %8, !llvm.loop !12

73:                                               ; preds = %8
  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

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

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

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}
!12 = distinct !{!12, !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 [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [3 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not18 = icmp eq i64 %5, 0
  br i1 %.not18, label %._crit_edge21, label %.lr.ph20

.lr.ph20:                                         ; preds = %0, %42
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = srem i64 %8, 2
  %10 = load i64, ptr %3, align 8, !tbaa !5
  %11 = srem i64 %10, 2
  %12 = icmp ne i64 %9, %11
  %.not7 = icmp slt i64 %8, %10
  %or.cond = or i1 %.not7, %12
  br i1 %or.cond, label %24, label %13

13:                                               ; preds = %.lr.ph20
  %14 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = icmp sgt i64 %15, 1
  br i1 %16, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %13
  %.lcssa = phi i64 [ %15, %13 ], [ %22, %.lr.ph ]
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %reass.sub = sub i64 %17, %.lcssa
  %18 = add i64 %reass.sub, 1
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %18)
  br label %42

.lr.ph:                                           ; preds = %13, %.lr.ph
  %.0412 = phi i64 [ %21, %.lr.ph ], [ 1, %13 ]
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  %21 = add nuw nsw i64 %.0412, 1
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = icmp slt i64 %21, %22
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !9

24:                                               ; preds = %.lr.ph20
  %25 = and i64 %8, 1
  %26 = icmp ne i64 %25, 0
  %27 = shl nsw i64 %10, 1
  %.not8 = icmp slt i64 %8, %27
  %or.cond9 = select i1 %26, i1 true, i1 %.not8
  br i1 %or.cond9, label %40, label %28

28:                                               ; preds = %24
  %29 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  %30 = load i64, ptr %3, align 8, !tbaa !5
  %31 = icmp sgt i64 %30, 1
  br i1 %31, label %.lr.ph15, label %._crit_edge16

._crit_edge16:                                    ; preds = %.lr.ph15, %28
  %.lcssa11 = phi i64 [ %30, %28 ], [ %38, %.lr.ph15 ]
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = shl i64 %.lcssa11, 1
  %reass.sub22 = sub i64 %32, %33
  %34 = add i64 %reass.sub22, 2
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %34)
  br label %42

.lr.ph15:                                         ; preds = %28, %.lr.ph15
  %.013 = phi i64 [ %37, %.lr.ph15 ], [ 1, %28 ]
  %36 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %37 = add nuw nsw i64 %.013, 1
  %38 = load i64, ptr %3, align 8, !tbaa !5
  %39 = icmp slt i64 %37, %38
  br i1 %39, label %.lr.ph15, label %._crit_edge16, !llvm.loop !11

40:                                               ; preds = %24
  %41 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.6)
  br label %42

42:                                               ; preds = %._crit_edge16, %40, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %43 = load i64, ptr %1, align 8, !tbaa !5
  %44 = add nsw i64 %43, -1
  store i64 %44, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %43, 0
  br i1 %.not, label %._crit_edge21, label %.lr.ph20, !llvm.loop !12

._crit_edge21:                                    ; preds = %42, %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: nofree nounwind
declare noundef i32 @printf(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

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}
!12 = distinct !{!12, !10}


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