; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 29. Codeforces Problems (1520B)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; 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 i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  store i64 0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  store i64 0, ptr %4, align 8, !tbaa !5
  %9 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %4)
  br label %10

10:                                               ; preds = %45, %0
  %11 = load i64, ptr %4, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %4, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %49

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  store i64 1, ptr %6, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %41, %14
  %17 = load i64, ptr %6, align 8, !tbaa !5
  %18 = load i64, ptr %5, align 8, !tbaa !5
  %19 = icmp sle i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 4, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %45

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 1, ptr %8, align 4, !tbaa !9
  br label %22

22:                                               ; preds = %37, %21
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = icmp sle i32 %23, 9
  br i1 %24, label %26, label %25

25:                                               ; preds = %22
  store i32 7, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %40

26:                                               ; preds = %22
  %27 = load i64, ptr %6, align 8, !tbaa !5
  %28 = load i32, ptr %8, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = mul nsw i64 %27, %29
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = icmp sle i64 %30, %31
  br i1 %32, label %33, label %36

33:                                               ; preds = %26
  %34 = load i64, ptr %3, align 8, !tbaa !5
  %35 = add nsw i64 %34, 1
  store i64 %35, ptr %3, align 8, !tbaa !5
  br label %36

36:                                               ; preds = %33, %26
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %8, align 4, !tbaa !9
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %8, align 4, !tbaa !9
  br label %22, !llvm.loop !11

40:                                               ; preds = %25
  br label %41

41:                                               ; preds = %40
  %42 = load i64, ptr %6, align 8, !tbaa !5
  %43 = mul nsw i64 %42, 10
  %44 = add nsw i64 %43, 1
  store i64 %44, ptr %6, align 8, !tbaa !5
  br label %16, !llvm.loop !13

45:                                               ; preds = %20
  %46 = load i64, ptr %3, align 8, !tbaa !5
  %47 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %46)
  %48 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %47, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %10, !llvm.loop !14

49:                                               ; preds = %10
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  %50 = load i32, ptr %1, align 4
  ret i32 %50
}

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #2 align 2

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

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

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 = { mustprogress 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 #3 = { inlinehint mustprogress 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 #4 = { 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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse 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) #4
  store i64 0, ptr %1, align 8, !tbaa !5
  %3 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = add nsw i64 %4, -1
  store i64 %5, ptr %1, align 8, !tbaa !5
  %.not18 = icmp eq i64 %4, 0
  br i1 %.not18, label %._crit_edge20, label %.lr.ph

.lr.ph:                                           ; preds = %0, %._crit_edge
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %.not1115 = icmp slt i64 %7, 1
  br i1 %.not1115, label %._crit_edge, label %.preheader

.preheader:                                       ; preds = %.lr.ph, %.preheader
  %.0917 = phi i64 [ %26, %.preheader ], [ 1, %.lr.ph ]
  %.116 = phi i64 [ %spec.select.8, %.preheader ], [ 0, %.lr.ph ]
  %.not12 = icmp sle i64 %.0917, %7
  %8 = zext i1 %.not12 to i64
  %spec.select = add nsw i64 %.116, %8
  %9 = shl nsw i64 %.0917, 1
  %.not12.1 = icmp sle i64 %9, %7
  %10 = zext i1 %.not12.1 to i64
  %spec.select.1 = add nsw i64 %spec.select, %10
  %11 = mul nsw i64 %.0917, 3
  %.not12.2 = icmp sle i64 %11, %7
  %12 = zext i1 %.not12.2 to i64
  %spec.select.2 = add nsw i64 %spec.select.1, %12
  %13 = shl nsw i64 %.0917, 2
  %.not12.3 = icmp sle i64 %13, %7
  %14 = zext i1 %.not12.3 to i64
  %spec.select.3 = add nsw i64 %spec.select.2, %14
  %15 = mul nsw i64 %.0917, 5
  %.not12.4 = icmp sle i64 %15, %7
  %16 = zext i1 %.not12.4 to i64
  %spec.select.4 = add nsw i64 %spec.select.3, %16
  %17 = mul nsw i64 %.0917, 6
  %.not12.5 = icmp sle i64 %17, %7
  %18 = zext i1 %.not12.5 to i64
  %spec.select.5 = add nsw i64 %spec.select.4, %18
  %19 = mul nsw i64 %.0917, 7
  %.not12.6 = icmp sle i64 %19, %7
  %20 = zext i1 %.not12.6 to i64
  %spec.select.6 = add nsw i64 %spec.select.5, %20
  %21 = shl nsw i64 %.0917, 3
  %.not12.7 = icmp sle i64 %21, %7
  %22 = zext i1 %.not12.7 to i64
  %spec.select.7 = add nsw i64 %spec.select.6, %22
  %23 = mul nsw i64 %.0917, 9
  %.not12.8 = icmp sle i64 %23, %7
  %24 = zext i1 %.not12.8 to i64
  %spec.select.8 = add nsw i64 %spec.select.7, %24
  %25 = mul nsw i64 %.0917, 10
  %26 = or disjoint i64 %25, 1
  %.not11.not = icmp slt i64 %25, %7
  br i1 %.not11.not, label %.preheader, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.preheader, %.lr.ph
  %.1.lcssa = phi i64 [ 0, %.lr.ph ], [ %spec.select.8, %.preheader ]
  %27 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.1.lcssa)
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %27, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %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_edge20, label %.lr.ph, !llvm.loop !11

._crit_edge20:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  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: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2 align 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: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #3

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #3 = { inlinehint mustprogress 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 #4 = { 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,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass