; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/345 Division 2/Problem B (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::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }
%"struct.std::pair" = type <{ %"struct.std::_Rb_tree_const_iterator", i8, [7 x i8] }>
%"struct.std::_Rb_tree_const_iterator" = type { ptr }

@n = external dso_local global i32, align 4
@cnt = external dso_local global [1001 x i32], align 16
@s = external dso_local global %"class.std::set", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"struct.std::pair", align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %26, %0
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %29

14:                                               ; preds = %9
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %18, align 4, !tbaa !5
  %21 = call { ptr, i8 } @_ZNSt3setIiSt4lessIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(48) @s, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %22 = getelementptr inbounds { ptr, i8 }, ptr %4, i32 0, i32 0
  %23 = extractvalue { ptr, i8 } %21, 0
  store ptr %23, ptr %22, align 8
  %24 = getelementptr inbounds { ptr, i8 }, ptr %4, i32 0, i32 1
  %25 = extractvalue { ptr, i8 } %21, 1
  store i8 %25, ptr %24, align 8
  br label %26

26:                                               ; preds = %14
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %3, align 4, !tbaa !5
  br label %9, !llvm.loop !9

29:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  store i32 0, ptr %6, align 4, !tbaa !5
  %30 = call noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) @s) #6
  %31 = trunc i64 %30 to i32
  store i32 %31, ptr @n, align 4, !tbaa !5
  call void @_ZSt4sortIPiEvT_S1_(ptr noundef getelementptr inbounds (i32, ptr @cnt, i64 1), ptr noundef getelementptr inbounds (i32, ptr @cnt, i64 1001))
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %67, %29
  %33 = load i32, ptr %7, align 4, !tbaa !5
  %34 = icmp sle i32 %33, 1000
  br i1 %34, label %36, label %35

35:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %70

36:                                               ; preds = %32
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = sub nsw i32 %40, %41
  %43 = icmp sle i32 %42, 0
  br i1 %43, label %44, label %45

44:                                               ; preds = %36
  br label %67

45:                                               ; preds = %36
  %46 = load i32, ptr %7, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %47
  %49 = load i32, ptr %48, align 4, !tbaa !5
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = sub nsw i32 %49, %50
  %52 = load i32, ptr @n, align 4, !tbaa !5
  %53 = sub nsw i32 %52, 1
  %54 = mul nsw i32 %51, %53
  %55 = load i32, ptr %5, align 4, !tbaa !5
  %56 = add nsw i32 %55, %54
  store i32 %56, ptr %5, align 4, !tbaa !5
  %57 = load i32, ptr %7, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %58
  %60 = load i32, ptr %59, align 4, !tbaa !5
  %61 = load i32, ptr %6, align 4, !tbaa !5
  %62 = sub nsw i32 %60, %61
  %63 = load i32, ptr %6, align 4, !tbaa !5
  %64 = add nsw i32 %63, %62
  store i32 %64, ptr %6, align 4, !tbaa !5
  %65 = load i32, ptr @n, align 4, !tbaa !5
  %66 = add nsw i32 %65, -1
  store i32 %66, ptr @n, align 4, !tbaa !5
  br label %67

67:                                               ; preds = %45, %44
  %68 = load i32, ptr %7, align 4, !tbaa !5
  %69 = add nsw i32 %68, 1
  store i32 %69, ptr %7, align 4, !tbaa !5
  br label %32, !llvm.loop !11

70:                                               ; preds = %35
  %71 = load i32, ptr %5, align 4, !tbaa !5
  %72 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %71)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIiSt4lessIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiEvT_S1_(ptr noundef, ptr noundef) #5

declare i32 @printf(ptr noundef, ...) #1

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 = { "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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = { 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 = { 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 #6 = { 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 = !{!"int", !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"

%"class.std::set" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@n = external dso_local global i32, align 4
@cnt = external dso_local global [1001 x i32], align 16
@s = external dso_local global %"class.std::set", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  %3 = load i32, ptr @n, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %5 = call noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48) @s) #6
  %6 = trunc i64 %5 to i32
  store i32 %6, ptr @n, align 4, !tbaa !5
  call void @_ZSt4sortIPiEvT_S1_(ptr noundef nonnull getelementptr inbounds (i8, ptr @cnt, i64 4), ptr noundef nonnull getelementptr inbounds (i8, ptr @cnt, i64 4004))
  %n.promoted = load i32, ptr @n, align 4, !tbaa !5
  br label %19

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01618 = phi i32 [ %14, %.lr.ph ], [ 0, %0 ]
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr %10, align 4, !tbaa !5
  %13 = call { ptr, i8 } @_ZNSt3setIiSt4lessIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(48) @s, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %14 = add nuw nsw i32 %.01618, 1
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

17:                                               ; preds = %39
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.115.1)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

19:                                               ; preds = %39, %._crit_edge
  %indvars.iv = phi i64 [ 1, %._crit_edge ], [ %indvars.iv.next.1, %39 ]
  %.01320 = phi i32 [ 0, %._crit_edge ], [ %.1.1, %39 ]
  %.01419 = phi i32 [ 0, %._crit_edge ], [ %.115.1, %39 ]
  %20 = phi i32 [ %n.promoted, %._crit_edge ], [ %40, %39 ]
  %21 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %indvars.iv
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = sub nsw i32 %22, %.01320
  %24 = icmp slt i32 %23, 1
  br i1 %24, label %29, label %25

25:                                               ; preds = %19
  %26 = add nsw i32 %20, -1
  %27 = mul nsw i32 %26, %23
  %28 = add nsw i32 %27, %.01419
  store i32 %26, ptr @n, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %19, %25
  %30 = phi i32 [ %20, %19 ], [ %26, %25 ]
  %.115 = phi i32 [ %.01419, %19 ], [ %28, %25 ]
  %.1 = phi i32 [ %.01320, %19 ], [ %22, %25 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %31 = getelementptr inbounds [1001 x i32], ptr @cnt, i64 0, i64 %indvars.iv.next
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = sub nsw i32 %32, %.1
  %34 = icmp slt i32 %33, 1
  br i1 %34, label %39, label %35

35:                                               ; preds = %29
  %36 = add nsw i32 %30, -1
  %37 = mul nsw i32 %36, %33
  %38 = add nsw i32 %37, %.115
  store i32 %36, ptr @n, align 4, !tbaa !5
  br label %39

39:                                               ; preds = %35, %29
  %40 = phi i32 [ %30, %29 ], [ %36, %35 ]
  %.115.1 = phi i32 [ %.115, %29 ], [ %38, %35 ]
  %.1.1 = phi i32 [ %.1, %29 ], [ %32, %35 ]
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %exitcond.not.1 = icmp eq i64 %indvars.iv.next.1, 1001
  br i1 %exitcond.not.1, label %17, label %19, !llvm.loop !11
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress uwtable
declare dso_local { ptr, i8 } @_ZNSt3setIiSt4lessIiESaIiEE6insertERKi(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt3setIiSt4lessIiESaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(48)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiEvT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #5

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

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 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 = { 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 = { 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 #6 = { 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 = !{!"int", !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,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass