; LLVM IR from Tunghohin/Competitive_Coding :: Codeforces (cf1661_B)

; 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" }
%"class.std::initializer_list" = type { ptr, i64 }

@dp = external dso_local global [262144 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvev() #0

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #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 norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::initializer_list", align 8
  %7 = alloca [3 x i32], align 4
  store i32 0, ptr %1, align 4
  %8 = call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %9 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %11
  %13 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  %14 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %15 = getelementptr i8, ptr %14, i64 -24
  %16 = load i64, ptr %15, align 8
  %17 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %16
  %18 = call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %17, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.memset.p0.i64(ptr align 16 @dp, i8 63, i64 1048576, i1 false)
  store i32 0, ptr @dp, align 16, !tbaa !8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  store i32 1, ptr %3, align 4, !tbaa !8
  br label %20

20:                                               ; preds = %64, %0
  %21 = load i32, ptr %3, align 4, !tbaa !8
  %22 = icmp sle i32 %21, 16
  br i1 %22, label %24, label %23

23:                                               ; preds = %20
  store i32 2, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  br label %67

24:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  store i32 65535, ptr %5, align 4, !tbaa !8
  br label %25

25:                                               ; preds = %60, %24
  %26 = load i32, ptr %5, align 4, !tbaa !8
  %27 = icmp sge i32 %26, 0
  br i1 %27, label %29, label %28

28:                                               ; preds = %25
  store i32 5, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  br label %63

29:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 12, ptr %7) #7
  %30 = load i32, ptr %5, align 4, !tbaa !8
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !8
  store i32 %33, ptr %7, align 4, !tbaa !8
  %34 = getelementptr inbounds i32, ptr %7, i64 1
  %35 = load i32, ptr %5, align 4, !tbaa !8
  %36 = add nsw i32 %35, 1
  %37 = srem i32 %36, 32768
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !8
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %34, align 4, !tbaa !8
  %42 = getelementptr inbounds i32, ptr %7, i64 2
  %43 = load i32, ptr %5, align 4, !tbaa !8
  %44 = mul nsw i32 %43, 2
  %45 = srem i32 %44, 32768
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !8
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %42, align 4, !tbaa !8
  %50 = getelementptr inbounds %"class.std::initializer_list", ptr %6, i32 0, i32 0
  store ptr %7, ptr %50, align 8, !tbaa !11
  %51 = getelementptr inbounds %"class.std::initializer_list", ptr %6, i32 0, i32 1
  store i64 3, ptr %51, align 8, !tbaa !15
  %52 = getelementptr inbounds { ptr, i64 }, ptr %6, i32 0, i32 0
  %53 = load ptr, ptr %52, align 8
  %54 = getelementptr inbounds { ptr, i64 }, ptr %6, i32 0, i32 1
  %55 = load i64, ptr %54, align 8
  %56 = call noundef i32 @_ZSt3minIiET_St16initializer_listIS0_E(ptr %53, i64 %55)
  %57 = load i32, ptr %5, align 4, !tbaa !8
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %58
  store i32 %56, ptr %59, align 4, !tbaa !8
  call void @llvm.lifetime.end.p0(i64 12, ptr %7) #7
  br label %60

60:                                               ; preds = %29
  %61 = load i32, ptr %5, align 4, !tbaa !8
  %62 = add nsw i32 %61, -1
  store i32 %62, ptr %5, align 4, !tbaa !8
  br label %25, !llvm.loop !16

63:                                               ; preds = %28
  br label %64

64:                                               ; preds = %63
  %65 = load i32, ptr %3, align 4, !tbaa !8
  %66 = add nsw i32 %65, 1
  store i32 %66, ptr %3, align 4, !tbaa !8
  br label %20, !llvm.loop !18

67:                                               ; preds = %23
  br label %68

68:                                               ; preds = %72, %67
  %69 = load i32, ptr %2, align 4, !tbaa !8
  %70 = add nsw i32 %69, -1
  store i32 %70, ptr %2, align 4, !tbaa !8
  %71 = icmp ne i32 %69, 0
  br i1 %71, label %72, label %73

72:                                               ; preds = %68
  call void @_Z5solvev()
  br label %68, !llvm.loop !19

73:                                               ; preds = %68
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %74 = load i32, ptr %1, align 4
  ret i32 %74
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) #4 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZSt3minIiET_St16initializer_listIS0_E(ptr, i64) #6

attributes #0 = { 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 #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 = { 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 #4 = { mustprogress 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 #5 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #6 = { 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 #7 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"_ZTSSt16initializer_listIiE", !13, i64 0, !14, i64 8}
!13 = !{!"any pointer", !10, i64 0}
!14 = !{!"long", !10, i64 0}
!15 = !{!12, !14, i64 8}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = distinct !{!18, !17}
!19 = distinct !{!19, !17}


; 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" }

@dp = external dso_local local_unnamed_addr global [262144 x i32], align 16
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5solvev() local_unnamed_addr #0

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) 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: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i32, align 4
  %2 = alloca [3 x i32], align 4
  %3 = tail call noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext false)
  %4 = load ptr, ptr @_ZSt3cin, align 8, !tbaa !5
  %5 = getelementptr i8, ptr %4, i64 -24
  %6 = load i64, ptr %5, align 8
  %7 = getelementptr inbounds i8, ptr @_ZSt3cin, i64 %6
  %8 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %7, ptr noundef null)
  %9 = load ptr, ptr @_ZSt4cout, align 8, !tbaa !5
  %10 = getelementptr i8, ptr %9, i64 -24
  %11 = load i64, ptr %10, align 8
  %12 = getelementptr inbounds i8, ptr @_ZSt4cout, i64 %11
  %13 = tail call noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264) %12, ptr noundef null)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #7
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1048576) @dp, i8 63, i64 1048576, i1 false)
  store i32 0, ptr @dp, align 16, !tbaa !8
  %15 = getelementptr inbounds i8, ptr %2, i64 4
  %16 = getelementptr inbounds i8, ptr %2, i64 8
  br label %.preheader10

.preheader10:                                     ; preds = %0, %19
  %.012 = phi i32 [ 1, %0 ], [ %20, %19 ]
  br label %21

.preheader:                                       ; preds = %19
  %17 = load i32, ptr %1, align 4, !tbaa !8
  %18 = add nsw i32 %17, -1
  store i32 %18, ptr %1, align 4, !tbaa !8
  %.not13 = icmp eq i32 %17, 0
  br i1 %.not13, label %._crit_edge, label %.lr.ph

19:                                               ; preds = %21
  %20 = add nuw nsw i32 %.012, 1
  %exitcond.not = icmp eq i32 %20, 17
  br i1 %exitcond.not, label %.preheader, label %.preheader10, !llvm.loop !11

21:                                               ; preds = %.preheader10, %21
  %indvars.iv = phi i64 [ 65535, %.preheader10 ], [ %indvars.iv.next, %21 ]
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %2) #7
  %22 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %indvars.iv
  %23 = load i32, ptr %22, align 4, !tbaa !8
  store i32 %23, ptr %2, align 4, !tbaa !8
  %24 = add nuw i64 %indvars.iv, 1
  %25 = and i64 %24, 32767
  %26 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !8
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %15, align 4, !tbaa !8
  %29 = shl i64 %indvars.iv, 1
  %30 = and i64 %29, 32766
  %31 = getelementptr inbounds [262144 x i32], ptr @dp, i64 0, i64 %30
  %32 = load i32, ptr %31, align 8, !tbaa !8
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %16, align 4, !tbaa !8
  %34 = call noundef i32 @_ZSt3minIiET_St16initializer_listIS0_E(ptr nonnull %2, i64 3)
  store i32 %34, ptr %22, align 4, !tbaa !8
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %2) #7
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %.not15 = icmp eq i64 %indvars.iv, 0
  br i1 %.not15, label %19, label %21, !llvm.loop !13

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  call void @_Z5solvev()
  %35 = load i32, ptr %1, align 4, !tbaa !8
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr %1, align 4, !tbaa !8
  %.not = icmp eq i32 %35, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !14

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #7
  ret i32 0
}

declare noundef zeroext i1 @_ZNSt8ios_base15sync_with_stdioEb(i1 noundef zeroext) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNSt9basic_iosIcSt11char_traitsIcEE3tieEPSo(ptr noundef nonnull align 8 dereferenceable(264), ptr noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZSt3minIiET_St16initializer_listIS0_E(ptr, i64) local_unnamed_addr #6

attributes #0 = { 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 #1 = { mustprogress 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 = { 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 #4 = { mustprogress 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 #5 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #6 = { 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 #7 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass