; LLVM IR from DionysiosB/CodeForces :: 1100-1199 (1183C-ComputerGame)

; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = 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 i32, align 4
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %13

13:                                               ; preds = %62, %60, %0
  %14 = load i64, ptr %2, align 8, !tbaa !5
  %15 = add nsw i64 %14, -1
  store i64 %15, ptr %2, align 8, !tbaa !5
  %16 = icmp ne i64 %14, 0
  br i1 %16, label %17, label %63

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5, ptr noundef %6)
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = load i64, ptr %6, align 8, !tbaa !5
  %22 = mul nsw i64 %20, %21
  %23 = icmp sle i64 %19, %22
  br i1 %23, label %24, label %26

24:                                               ; preds = %17
  %25 = call i32 @puts(ptr noundef @.str.2)
  store i32 2, ptr %7, align 4
  br label %60, !llvm.loop !9

26:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %27 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %27, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %28 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %28, ptr %10, align 8, !tbaa !5
  br label %29

29:                                               ; preds = %56, %26
  %30 = load i64, ptr %8, align 8, !tbaa !5
  %31 = load i64, ptr %9, align 8, !tbaa !5
  %32 = icmp sle i64 %30, %31
  br i1 %32, label %33, label %57

33:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  %34 = load i64, ptr %8, align 8, !tbaa !5
  %35 = load i64, ptr %9, align 8, !tbaa !5
  %36 = add nsw i64 %34, %35
  %37 = sdiv i64 %36, 2
  store i64 %37, ptr %11, align 8, !tbaa !5
  %38 = load i64, ptr %11, align 8, !tbaa !5
  %39 = load i64, ptr %5, align 8, !tbaa !5
  %40 = mul nsw i64 %38, %39
  %41 = load i64, ptr %4, align 8, !tbaa !5
  %42 = load i64, ptr %11, align 8, !tbaa !5
  %43 = sub nsw i64 %41, %42
  %44 = load i64, ptr %6, align 8, !tbaa !5
  %45 = mul nsw i64 %43, %44
  %46 = add nsw i64 %40, %45
  %47 = load i64, ptr %3, align 8, !tbaa !5
  %48 = icmp slt i64 %46, %47
  br i1 %48, label %49, label %53

49:                                               ; preds = %33
  %50 = load i64, ptr %11, align 8, !tbaa !5
  store i64 %50, ptr %10, align 8, !tbaa !5
  %51 = load i64, ptr %11, align 8, !tbaa !5
  %52 = add nsw i64 %51, 1
  store i64 %52, ptr %8, align 8, !tbaa !5
  br label %56

53:                                               ; preds = %33
  %54 = load i64, ptr %11, align 8, !tbaa !5
  %55 = sub nsw i64 %54, 1
  store i64 %55, ptr %9, align 8, !tbaa !5
  br label %56

56:                                               ; preds = %53, %49
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  br label %29, !llvm.loop !11

57:                                               ; preds = %29
  %58 = load i64, ptr %10, align 8, !tbaa !5
  %59 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %58)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  store i32 0, ptr %7, align 4
  br label %60

60:                                               ; preds = %57, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  %61 = load i32, ptr %7, align 4
  switch i32 %61, label %65 [
    i32 0, label %62
    i32 2, label %13
  ]

62:                                               ; preds = %60
  br label %13, !llvm.loop !9

63:                                               ; preds = %13
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %64 = load i32, ptr %1, align 4
  ret i32 %64

65:                                               ; preds = %60
  unreachable
}

; 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 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.3 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %7 = load i64, ptr %1, align 8, !tbaa !5
  %8 = add nsw i64 %7, -1
  store i64 %8, ptr %1, align 8, !tbaa !5
  %.not21 = icmp eq i64 %7, 0
  br i1 %.not21, label %._crit_edge24, label %.lr.ph23

.lr.ph23:                                         ; preds = %0, %28
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = mul nsw i64 %12, %11
  %.not15 = icmp sgt i64 %10, %13
  br i1 %.not15, label %.preheader, label %15

.preheader:                                       ; preds = %.lr.ph23
  %.not1617 = icmp slt i64 %11, 0
  br i1 %.not1617, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %14 = load i64, ptr %4, align 8, !tbaa !5
  br label %17

15:                                               ; preds = %.lr.ph23
  %16 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  br label %28, !llvm.loop !9

17:                                               ; preds = %.lr.ph, %17
  %.020 = phi i64 [ %11, %.lr.ph ], [ %.1, %17 ]
  %.01119 = phi i64 [ %11, %.lr.ph ], [ %.112, %17 ]
  %.01318 = phi i64 [ 0, %.lr.ph ], [ %.114, %17 ]
  %18 = add nuw nsw i64 %.01119, %.01318
  %19 = lshr i64 %18, 1
  %20 = mul nsw i64 %14, %19
  %21 = sub nsw i64 %11, %19
  %22 = mul nsw i64 %21, %12
  %23 = add nsw i64 %20, %22
  %24 = icmp slt i64 %23, %10
  %25 = add nuw nsw i64 %19, 1
  %26 = add nsw i64 %19, -1
  %.114 = select i1 %24, i64 %25, i64 %.01318
  %.112 = select i1 %24, i64 %.01119, i64 %26
  %.1 = select i1 %24, i64 %19, i64 %.020
  %.not16 = icmp sgt i64 %.114, %.112
  br i1 %.not16, label %._crit_edge, label %17, !llvm.loop !11

._crit_edge:                                      ; preds = %17, %.preheader
  %.0.lcssa = phi i64 [ %11, %.preheader ], [ %.1, %17 ]
  %27 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %.0.lcssa)
  br label %28

28:                                               ; preds = %._crit_edge, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %29 = load i64, ptr %1, align 8, !tbaa !5
  %30 = add nsw i64 %29, -1
  store i64 %30, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %29, 0
  br i1 %.not, label %._crit_edge24, label %.lr.ph23

._crit_edge24:                                    ; preds = %28, %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 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,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass