; LLVM IR from DionysiosB/CodeForces :: 1100-1199 (1197B-Pillars)

; 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 [4 x i8], align 1
@.str.2 = 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 i8, align 1
  %4 = alloca i8, align 1
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %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)
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #3
  store i8 1, ptr %3, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  store i8 1, ptr %4, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 -1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %10

10:                                               ; preds = %38, %0
  %11 = load i64, ptr %6, align 8, !tbaa !9
  %12 = load i64, ptr %2, align 8, !tbaa !9
  %13 = icmp slt i64 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %7, align 4
  br label %41

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %8)
  %17 = load i8, ptr %3, align 1, !tbaa !5, !range !11, !noundef !12
  %18 = trunc i8 %17 to i1
  br i1 %18, label %19, label %24

19:                                               ; preds = %15
  %20 = load i64, ptr %8, align 8, !tbaa !9
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %19
  store i8 0, ptr %3, align 1, !tbaa !5
  br label %33

24:                                               ; preds = %19, %15
  %25 = load i8, ptr %3, align 1, !tbaa !5, !range !11, !noundef !12
  %26 = trunc i8 %25 to i1
  br i1 %26, label %32, label %27

27:                                               ; preds = %24
  %28 = load i64, ptr %8, align 8, !tbaa !9
  %29 = load i64, ptr %5, align 8, !tbaa !9
  %30 = icmp sgt i64 %28, %29
  br i1 %30, label %31, label %32

31:                                               ; preds = %27
  store i8 0, ptr %4, align 1, !tbaa !5
  store i32 2, ptr %7, align 4
  br label %35

32:                                               ; preds = %27, %24
  br label %33

33:                                               ; preds = %32, %23
  %34 = load i64, ptr %8, align 8, !tbaa !9
  store i64 %34, ptr %5, align 8, !tbaa !9
  store i32 0, ptr %7, align 4
  br label %35

35:                                               ; preds = %33, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %36 = load i32, ptr %7, align 4
  switch i32 %36, label %41 [
    i32 0, label %37
  ]

37:                                               ; preds = %35
  br label %38

38:                                               ; preds = %37
  %39 = load i64, ptr %6, align 8, !tbaa !9
  %40 = add nsw i64 %39, 1
  store i64 %40, ptr %6, align 8, !tbaa !9
  br label %10, !llvm.loop !13

41:                                               ; preds = %35, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %42

42:                                               ; preds = %41
  %43 = load i8, ptr %4, align 1, !tbaa !5, !range !11, !noundef !12
  %44 = trunc i8 %43 to i1
  %45 = zext i1 %44 to i64
  %46 = select i1 %44, ptr @.str.1, ptr @.str.2
  %47 = call i32 @puts(ptr noundef %46)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %48 = load i32, ptr %1, align 4
  ret i32 %48
}

; 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 @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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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 [4 x i8], align 1
@.str.2 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %.not24 = icmp sgt i64 %4, 0
  br i1 %.not24, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %0, %11
  %.0927 = phi i64 [ %12, %11 ], [ 0, %0 ]
  %.01026 = phi i64 [ %6, %11 ], [ -1, %0 ]
  %.01325 = phi i1 [ %.215.ph, %11 ], [ true, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %6 = load i64, ptr %2, align 8
  %7 = icmp sge i64 %6, %.01026
  br i1 %.01325, label %11, label %8

8:                                                ; preds = %.lr.ph
  %9 = icmp sgt i64 %6, %.01026
  br i1 %9, label %10, label %11

10:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  br label %.loopexit

11:                                               ; preds = %8, %.lr.ph
  %.215.ph = phi i1 [ %7, %.lr.ph ], [ false, %8 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %12 = add nuw nsw i64 %.0927, 1
  %13 = load i64, ptr %1, align 8, !tbaa !5
  %.not = icmp slt i64 %12, %13
  br i1 %.not, label %.lr.ph, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %11, %0, %10
  %14 = phi ptr [ @.str.2, %10 ], [ @.str.1, %0 ], [ @.str.1, %11 ]
  %15 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %14)
  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 @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"}


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