; LLVM IR from DionysiosB/CodeForces :: 0100-0199 (142B-HelpGeneral)

; 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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  %6 = load i64, ptr %3, align 8, !tbaa !5
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp sgt i64 %6, %7
  br i1 %8, label %9, label %13

9:                                                ; preds = %0
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %10 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %10, ptr %4, align 8, !tbaa !5
  %11 = load i64, ptr %2, align 8, !tbaa !5
  store i64 %11, ptr %3, align 8, !tbaa !5
  %12 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %12, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %13

13:                                               ; preds = %9, %0
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = icmp eq i64 %14, 1
  br i1 %15, label %16, label %19

16:                                               ; preds = %13
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %17)
  br label %49

19:                                               ; preds = %13
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = icmp eq i64 %20, 2
  br i1 %21, label %22, label %38

22:                                               ; preds = %19
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = sdiv i64 %23, 4
  %25 = mul nsw i64 2, %24
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = srem i64 %26, 4
  %28 = icmp slt i64 %27, 2
  br i1 %28, label %29, label %32

29:                                               ; preds = %22
  %30 = load i64, ptr %2, align 8, !tbaa !5
  %31 = srem i64 %30, 4
  br label %33

32:                                               ; preds = %22
  br label %33

33:                                               ; preds = %32, %29
  %34 = phi i64 [ %31, %29 ], [ 2, %32 ]
  %35 = add nsw i64 %25, %34
  %36 = mul nsw i64 2, %35
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %36)
  br label %48

38:                                               ; preds = %19
  %39 = load i64, ptr %3, align 8, !tbaa !5
  %40 = load i64, ptr %2, align 8, !tbaa !5
  %41 = mul nsw i64 %39, %40
  %42 = load i64, ptr %2, align 8, !tbaa !5
  %43 = load i64, ptr %3, align 8, !tbaa !5
  %44 = mul nsw i64 %42, %43
  %45 = sdiv i64 %44, 2
  %46 = sub nsw i64 %41, %45
  %47 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %46)
  br label %48

48:                                               ; preds = %38, %33
  br label %49

49:                                               ; preds = %48, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  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

; 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"}


; 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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %4 = load i64, ptr %2, align 8, !tbaa !5
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = icmp sgt i64 %4, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %0
  store i64 %5, ptr %2, align 8, !tbaa !5
  store i64 %4, ptr %1, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %7, %0
  %9 = phi i64 [ %4, %7 ], [ %5, %0 ]
  %10 = phi i64 [ %5, %7 ], [ %4, %0 ]
  switch i64 %10, label %18 [
    i64 1, label %21
    i64 2, label %11
  ]

11:                                               ; preds = %8
  %12 = sdiv i64 %9, 4
  %13 = srem i64 %9, 4
  %14 = icmp slt i64 %13, 2
  %15 = shl nsw i64 %13, 1
  %spec.select = select i1 %14, i64 %15, i64 4
  %16 = shl nsw i64 %12, 2
  %17 = add i64 %spec.select, %16
  br label %21

18:                                               ; preds = %8
  %19 = mul nsw i64 %4, %5
  %.neg = sdiv i64 %19, -2
  %20 = add i64 %.neg, %19
  br label %21

21:                                               ; preds = %8, %11, %18
  %.sink = phi i64 [ %17, %11 ], [ %20, %18 ], [ %9, %8 ]
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  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: 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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass