; LLVM IR from DionysiosB/CodeForces :: 1841B-KeepItBeautiful (main)

; 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 [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 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 i8, align 1
  %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 = %71, %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 %73

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)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %18 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %18, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #3
  store i8 0, ptr %6, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 1, ptr %7, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %68, %14
  %20 = load i64, ptr %7, align 8, !tbaa !5
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %71

24:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %25 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8)
  %26 = load i8, ptr %6, align 1, !tbaa !9, !range !11, !noundef !12
  %27 = trunc i8 %26 to i1
  br i1 %27, label %35, label %28

28:                                               ; preds = %24
  %29 = load i64, ptr %8, align 8, !tbaa !5
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = icmp sge i64 %29, %30
  br i1 %31, label %32, label %35

32:                                               ; preds = %28
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %34 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %34, ptr %5, align 8, !tbaa !5
  br label %67

35:                                               ; preds = %28, %24
  %36 = load i8, ptr %6, align 1, !tbaa !9, !range !11, !noundef !12
  %37 = trunc i8 %36 to i1
  br i1 %37, label %48, label %38

38:                                               ; preds = %35
  %39 = load i64, ptr %8, align 8, !tbaa !5
  %40 = load i64, ptr %4, align 8, !tbaa !5
  %41 = icmp sle i64 %39, %40
  br i1 %41, label %42, label %45

42:                                               ; preds = %38
  %43 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  store i8 1, ptr %6, align 1, !tbaa !9
  %44 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %44, ptr %5, align 8, !tbaa !5
  br label %47

45:                                               ; preds = %38
  %46 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %47

47:                                               ; preds = %45, %42
  br label %66

48:                                               ; preds = %35
  %49 = load i8, ptr %6, align 1, !tbaa !9, !range !11, !noundef !12
  %50 = trunc i8 %49 to i1
  br i1 %50, label %51, label %65

51:                                               ; preds = %48
  %52 = load i64, ptr %5, align 8, !tbaa !5
  %53 = load i64, ptr %8, align 8, !tbaa !5
  %54 = icmp sle i64 %52, %53
  br i1 %54, label %55, label %62

55:                                               ; preds = %51
  %56 = load i64, ptr %8, align 8, !tbaa !5
  %57 = load i64, ptr %4, align 8, !tbaa !5
  %58 = icmp sle i64 %56, %57
  br i1 %58, label %59, label %62

59:                                               ; preds = %55
  %60 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %61 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %61, ptr %5, align 8, !tbaa !5
  br label %64

62:                                               ; preds = %55, %51
  %63 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %64

64:                                               ; preds = %62, %59
  br label %65

65:                                               ; preds = %64, %48
  br label %66

66:                                               ; preds = %65, %47
  br label %67

67:                                               ; preds = %66, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %68

68:                                               ; preds = %67
  %69 = load i64, ptr %7, align 8, !tbaa !5
  %70 = add nsw i64 %69, 1
  store i64 %70, ptr %7, align 8, !tbaa !5
  br label %19, !llvm.loop !13

71:                                               ; preds = %23
  %72 = call i32 @puts(ptr noundef @.str.3)
  call void @llvm.lifetime.end.p0(i64 1, 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
  br label %10, !llvm.loop !15

73:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %74 = load i32, ptr %1, align 4
  ret i32 %74
}

; 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 @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

declare i32 @puts(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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [1 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not20 = icmp eq i64 %6, 0
  br i1 %.not20, label %._crit_edge23, label %.lr.ph22

.lr.ph22:                                         ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp sgt i64 %11, 1
  br i1 %12, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.lr.ph22
  %13 = load i64, ptr %3, align 8, !tbaa !5
  br label %.lr.ph

._crit_edge:                                      ; preds = %36, %.lr.ph22
  %14 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.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
  %15 = load i64, ptr %1, align 8, !tbaa !5
  %16 = add nsw i64 %15, -1
  store i64 %16, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %15, 0
  br i1 %.not, label %._crit_edge23, label %.lr.ph22, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph.preheader, %36
  %.019 = phi i64 [ %37, %36 ], [ 1, %.lr.ph.preheader ]
  %.0818 = phi i1 [ %.1, %36 ], [ false, %.lr.ph.preheader ]
  %.0917 = phi i64 [ %.110, %36 ], [ %13, %.lr.ph.preheader ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %18 = load i64, ptr %4, align 8
  %.not12 = icmp slt i64 %18, %.0917
  %or.cond = select i1 %.0818, i1 true, i1 %.not12
  br i1 %or.cond, label %22, label %19

19:                                               ; preds = %.lr.ph
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %21 = load i64, ptr %4, align 8, !tbaa !5
  br label %36

22:                                               ; preds = %.lr.ph
  %23 = load i64, ptr %3, align 8
  %.not15 = icmp sgt i64 %18, %23
  br i1 %.0818, label %30, label %24

24:                                               ; preds = %22
  br i1 %.not15, label %28, label %25

25:                                               ; preds = %24
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %27 = load i64, ptr %4, align 8, !tbaa !5
  br label %36

28:                                               ; preds = %24
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  br label %36

30:                                               ; preds = %22
  %or.cond16 = select i1 %.not12, i1 true, i1 %.not15
  br i1 %or.cond16, label %34, label %31

31:                                               ; preds = %30
  %32 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %33 = load i64, ptr %4, align 8, !tbaa !5
  br label %36

34:                                               ; preds = %30
  %35 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  br label %36

36:                                               ; preds = %28, %25, %31, %34, %19
  %.110 = phi i64 [ %33, %31 ], [ %.0917, %34 ], [ %27, %25 ], [ %.0917, %28 ], [ %21, %19 ]
  %.1 = phi i1 [ true, %31 ], [ true, %34 ], [ true, %25 ], [ false, %28 ], [ false, %19 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  %37 = add nuw nsw i64 %.019, 1
  %38 = load i64, ptr %2, align 8, !tbaa !5
  %39 = icmp slt i64 %37, %38
  br i1 %39, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge23:                                    ; preds = %._crit_edge, %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 @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

; Function Attrs: nofree nounwind
declare noundef i32 @puts(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: AggressiveInstCombinePass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass