; LLVM IR from tangjz/acm-icpc :: poj (2970)

; 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"

%struct.Node = type { i32, i32, i32 }
%"class.std::priority_queue" = type <{ %"class.std::vector", [8 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@ans = external dso_local global double, align 8
@f = external dso_local global [100001 x %struct.Node], align 16
@Q = external dso_local global %"class.std::priority_queue", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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 i32, align 4
  %5 = alloca %"struct.std::pair", align 4
  %6 = alloca %"struct.std::pair", align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #8
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %29, %0
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr @n, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #8
  br label %32

15:                                               ; preds = %10
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %17
  %19 = getelementptr inbounds %struct.Node, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %21
  %23 = getelementptr inbounds %struct.Node, ptr %22, i32 0, i32 1
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %25
  %27 = getelementptr inbounds %struct.Node, ptr %26, i32 0, i32 2
  %28 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %19, ptr noundef %23, ptr noundef %27)
  br label %29

29:                                               ; preds = %15
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %2, align 4, !tbaa !5
  br label %10, !llvm.loop !9

32:                                               ; preds = %14
  %33 = load i32, ptr @n, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds %struct.Node, ptr @f, i64 %34
  call void @_ZSt4sortIP4NodeEvT_S2_(ptr noundef @f, ptr noundef %35)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #8
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #8
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %103, %32
  %37 = load i32, ptr %3, align 4, !tbaa !5
  %38 = load i32, ptr @n, align 4, !tbaa !5
  %39 = icmp slt i32 %37, %38
  br i1 %39, label %41, label %40

40:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #8
  br label %106

41:                                               ; preds = %36
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #8
  %42 = load i32, ptr %3, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %43
  %45 = getelementptr inbounds %struct.Node, ptr %44, i32 0, i32 0
  %46 = load i32, ptr %3, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %47
  %49 = getelementptr inbounds %struct.Node, ptr %48, i32 0, i32 1
  %50 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %45, ptr noundef nonnull align 4 dereferenceable(4) %49)
  store i64 %50, ptr %5, align 4
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(25) @Q, ptr noundef nonnull align 4 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #8
  %51 = load i32, ptr %3, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %52
  %54 = getelementptr inbounds %struct.Node, ptr %53, i32 0, i32 1
  %55 = load i32, ptr %54, align 4, !tbaa !11
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = add nsw i32 %56, %55
  store i32 %57, ptr %4, align 4, !tbaa !5
  br label %58

58:                                               ; preds = %101, %41
  %59 = call noundef zeroext i1 @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  br i1 %59, label %68, label %60

60:                                               ; preds = %58
  %61 = load i32, ptr %4, align 4, !tbaa !5
  %62 = load i32, ptr %3, align 4, !tbaa !5
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %63
  %65 = getelementptr inbounds %struct.Node, ptr %64, i32 0, i32 2
  %66 = load i32, ptr %65, align 4, !tbaa !13
  %67 = icmp sgt i32 %61, %66
  br label %68

68:                                               ; preds = %60, %58
  %69 = phi i1 [ false, %58 ], [ %67, %60 ]
  br i1 %69, label %70, label %102

70:                                               ; preds = %68
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #8
  %71 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %6, ptr align 4 %71, i64 8, i1 false)
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #8
  %72 = getelementptr inbounds %"struct.std::pair", ptr %6, i32 0, i32 1
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #8
  %73 = load i32, ptr %4, align 4, !tbaa !5
  %74 = load i32, ptr %3, align 4, !tbaa !5
  %75 = sext i32 %74 to i64
  %76 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %75
  %77 = getelementptr inbounds %struct.Node, ptr %76, i32 0, i32 2
  %78 = load i32, ptr %77, align 4, !tbaa !13
  %79 = sub nsw i32 %73, %78
  store i32 %79, ptr %8, align 4, !tbaa !5
  %80 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %72, ptr noundef nonnull align 4 dereferenceable(4) %8)
  %81 = load i32, ptr %80, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #8
  store i32 %81, ptr %7, align 4, !tbaa !5
  %82 = load i32, ptr %7, align 4, !tbaa !5
  %83 = load i32, ptr %4, align 4, !tbaa !5
  %84 = sub nsw i32 %83, %82
  store i32 %84, ptr %4, align 4, !tbaa !5
  %85 = load i32, ptr %7, align 4, !tbaa !5
  %86 = getelementptr inbounds %"struct.std::pair", ptr %6, i32 0, i32 1
  %87 = load i32, ptr %86, align 4, !tbaa !14
  %88 = sub nsw i32 %87, %85
  store i32 %88, ptr %86, align 4, !tbaa !14
  %89 = load i32, ptr %7, align 4, !tbaa !5
  %90 = sitofp i32 %89 to double
  %91 = getelementptr inbounds %"struct.std::pair", ptr %6, i32 0, i32 0
  %92 = load i32, ptr %91, align 4, !tbaa !16
  %93 = sitofp i32 %92 to double
  %94 = fdiv double %90, %93
  %95 = load double, ptr @ans, align 8, !tbaa !17
  %96 = fadd double %95, %94
  store double %96, ptr @ans, align 8, !tbaa !17
  %97 = getelementptr inbounds %"struct.std::pair", ptr %6, i32 0, i32 1
  %98 = load i32, ptr %97, align 4, !tbaa !14
  %99 = icmp ne i32 %98, 0
  br i1 %99, label %100, label %101

100:                                              ; preds = %70
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(25) @Q, ptr noundef nonnull align 4 dereferenceable(8) %6)
  br label %101

101:                                              ; preds = %100, %70
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #8
  br label %58, !llvm.loop !19

102:                                              ; preds = %68
  br label %103

103:                                              ; preds = %102
  %104 = load i32, ptr %3, align 4, !tbaa !5
  %105 = add nsw i32 %104, 1
  store i32 %105, ptr %3, align 4, !tbaa !5
  br label %36, !llvm.loop !20

106:                                              ; preds = %40
  %107 = load double, ptr @ans, align 8, !tbaa !17
  %108 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, double noundef %107)
  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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIP4NodeEvT_S2_(ptr noundef, ptr noundef) #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(8)) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(25)) #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) #5 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #7

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(8)) #4 align 2

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 = { 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 = { 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 #5 = { 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 #6 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #7 = { inlinehint 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 #8 = { 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 = !{!12, !6, i64 4}
!12 = !{!"_ZTS4Node", !6, i64 0, !6, i64 4, !6, i64 8}
!13 = !{!12, !6, i64 8}
!14 = !{!15, !6, i64 4}
!15 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!16 = !{!15, !6, i64 0}
!17 = !{!18, !18, i64 0}
!18 = !{!"double", !7, i64 0}
!19 = distinct !{!19, !10}
!20 = distinct !{!20, !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"

%struct.Node = type { i32, i32, i32 }
%"class.std::priority_queue" = type <{ %"class.std::vector", [8 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@ans = external dso_local local_unnamed_addr global double, align 8
@f = external dso_local global [100001 x %struct.Node], align 16
@Q = external dso_local global %"class.std::priority_queue", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca %"struct.std::pair", align 8
  %2 = alloca %"struct.std::pair", align 8
  %3 = alloca i32, align 4
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %5 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %16, %.lr.ph ]
  %7 = getelementptr inbounds %struct.Node, ptr @f, i64 %.pre-phi
  tail call void @_ZSt4sortIP4NodeEvT_S2_(ptr noundef nonnull @f, ptr noundef nonnull %7)
  %8 = load i32, ptr @n, align 4, !tbaa !5
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %.lr.ph32, label %._crit_edge33

.lr.ph32:                                         ; preds = %._crit_edge
  %10 = getelementptr inbounds i8, ptr %2, i64 4
  br label %20

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %11 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %indvars.iv
  %12 = getelementptr inbounds i8, ptr %11, i64 4
  %13 = getelementptr inbounds i8, ptr %11, i64 8
  %14 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %11, ptr noundef nonnull %12, ptr noundef nonnull %13)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge33:                                    ; preds = %.critedge, %._crit_edge
  %18 = load double, ptr @ans, align 8, !tbaa !11
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, double noundef %18)
  ret i32 0

20:                                               ; preds = %.lr.ph32, %.critedge
  %indvars.iv36 = phi i64 [ 0, %.lr.ph32 ], [ %indvars.iv.next37, %.critedge ]
  %.01930 = phi i32 [ 0, %.lr.ph32 ], [ %.1.lcssa, %.critedge ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #7
  %21 = getelementptr inbounds [100001 x %struct.Node], ptr @f, i64 0, i64 %indvars.iv36
  %22 = getelementptr inbounds i8, ptr %21, i64 4
  %23 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %21, ptr noundef nonnull align 4 dereferenceable(4) %22)
  store i64 %23, ptr %1, align 8
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(25) @Q, ptr noundef nonnull align 4 dereferenceable(8) %1)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  %24 = load i32, ptr %22, align 4, !tbaa !13
  %25 = add nsw i32 %24, %.01930
  %26 = getelementptr inbounds i8, ptr %21, i64 8
  %27 = call noundef zeroext i1 @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  br i1 %27, label %.critedge, label %.lr.ph25

.lr.ph25:                                         ; preds = %20, %47
  %.123 = phi i32 [ %37, %47 ], [ %25, %20 ]
  %28 = load i32, ptr %26, align 4, !tbaa !15
  %29 = icmp sgt i32 %.123, %28
  br i1 %29, label %30, label %.critedge

30:                                               ; preds = %.lr.ph25
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #7
  %31 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  %32 = load i64, ptr %31, align 4
  store i64 %32, ptr %2, align 8
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #7
  %33 = load i32, ptr %26, align 4, !tbaa !15
  %34 = sub nsw i32 %.123, %33
  store i32 %34, ptr %3, align 4, !tbaa !5
  %35 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %10, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %36 = load i32, ptr %35, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #7
  %37 = sub nsw i32 %.123, %36
  %38 = load i32, ptr %10, align 4, !tbaa !16
  %39 = sub nsw i32 %38, %36
  store i32 %39, ptr %10, align 4, !tbaa !16
  %40 = sitofp i32 %36 to double
  %41 = load i32, ptr %2, align 8, !tbaa !18
  %42 = sitofp i32 %41 to double
  %43 = fdiv double %40, %42
  %44 = load double, ptr @ans, align 8, !tbaa !11
  %45 = fadd double %44, %43
  store double %45, ptr @ans, align 8, !tbaa !11
  %.not = icmp eq i32 %38, %36
  br i1 %.not, label %47, label %46

46:                                               ; preds = %30
  call void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(25) @Q, ptr noundef nonnull align 4 dereferenceable(8) %2)
  br label %47

47:                                               ; preds = %46, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #7
  %48 = call noundef zeroext i1 @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(25) @Q)
  br i1 %48, label %.critedge, label %.lr.ph25, !llvm.loop !19

.critedge:                                        ; preds = %47, %.lr.ph25, %20
  %.1.lcssa = phi i32 [ %25, %20 ], [ %.123, %.lr.ph25 ], [ %37, %47 ]
  %indvars.iv.next37 = add nuw nsw i64 %indvars.iv36, 1
  %49 = load i32, ptr @n, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = icmp slt i64 %indvars.iv.next37, %50
  br i1 %51, label %20, label %._crit_edge33, !llvm.loop !20
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIP4NodeEvT_S2_(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNKSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #5 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #4 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #6

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueISt4pairIiiESt6vectorIS1_SaIS1_EESt4lessIS1_EE4pushERKS1_(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #4 align 2

; 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 = { 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 = { 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 #5 = { 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 #6 = { inlinehint 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = !{!14, !6, i64 4}
!14 = !{!"_ZTS4Node", !6, i64 0, !6, i64 4, !6, i64 8}
!15 = !{!14, !6, i64 8}
!16 = !{!17, !6, i64 4}
!17 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!18 = !{!17, !6, i64 0}
!19 = distinct !{!19, !10}
!20 = distinct !{!20, !10}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass