; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/303 Division 2/Problem C (C)

; 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::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 }
%"class.std::basic_ostream" = type { ptr, %"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 }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@h = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@t = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@_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 i32, align 4
  %3 = alloca %"struct.std::pair", align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %16, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %19

13:                                               ; preds = %8
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef @x, ptr noundef @h)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %15 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) @x, ptr noundef nonnull align 4 dereferenceable(4) @h)
  store i64 %15, ptr %3, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @t, ptr noundef nonnull align 4 dereferenceable(8) %3)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %16

16:                                               ; preds = %13
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %2, align 4, !tbaa !5
  br label %8, !llvm.loop !9

19:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  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 1, ptr %6, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %131, %19
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load i32, ptr @n, align 4, !tbaa !5
  %23 = sub nsw i32 %22, 1
  %24 = icmp slt i32 %21, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %134

26:                                               ; preds = %20
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %29, label %76

29:                                               ; preds = %26
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = sub nsw i32 %30, 1
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %32) #6
  %34 = getelementptr inbounds %"struct.std::pair", ptr %33, i32 0, i32 0
  %35 = load i32, ptr %34, align 4, !tbaa !11
  %36 = load i32, ptr %6, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %37) #6
  %39 = getelementptr inbounds %"struct.std::pair", ptr %38, i32 0, i32 0
  %40 = load i32, ptr %39, align 4, !tbaa !11
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %42) #6
  %44 = getelementptr inbounds %"struct.std::pair", ptr %43, i32 0, i32 1
  %45 = load i32, ptr %44, align 4, !tbaa !13
  %46 = sub nsw i32 %40, %45
  %47 = icmp slt i32 %35, %46
  br i1 %47, label %48, label %51

48:                                               ; preds = %29
  %49 = load i32, ptr %4, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %4, align 4, !tbaa !5
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %75

51:                                               ; preds = %29
  %52 = load i32, ptr %6, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %53) #6
  %55 = getelementptr inbounds %"struct.std::pair", ptr %54, i32 0, i32 0
  %56 = load i32, ptr %55, align 4, !tbaa !11
  %57 = load i32, ptr %6, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %58) #6
  %60 = getelementptr inbounds %"struct.std::pair", ptr %59, i32 0, i32 1
  %61 = load i32, ptr %60, align 4, !tbaa !13
  %62 = add nsw i32 %56, %61
  %63 = load i32, ptr %6, align 4, !tbaa !5
  %64 = add nsw i32 %63, 1
  %65 = sext i32 %64 to i64
  %66 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %65) #6
  %67 = getelementptr inbounds %"struct.std::pair", ptr %66, i32 0, i32 0
  %68 = load i32, ptr %67, align 4, !tbaa !11
  %69 = icmp slt i32 %62, %68
  br i1 %69, label %70, label %73

70:                                               ; preds = %51
  %71 = load i32, ptr %4, align 4, !tbaa !5
  %72 = add nsw i32 %71, 1
  store i32 %72, ptr %4, align 4, !tbaa !5
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %74

73:                                               ; preds = %51
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %74

74:                                               ; preds = %73, %70
  br label %75

75:                                               ; preds = %74, %48
  br label %130

76:                                               ; preds = %26
  %77 = load i32, ptr %6, align 4, !tbaa !5
  %78 = sub nsw i32 %77, 1
  %79 = sext i32 %78 to i64
  %80 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %79) #6
  %81 = getelementptr inbounds %"struct.std::pair", ptr %80, i32 0, i32 0
  %82 = load i32, ptr %81, align 4, !tbaa !11
  %83 = load i32, ptr %6, align 4, !tbaa !5
  %84 = sub nsw i32 %83, 1
  %85 = sext i32 %84 to i64
  %86 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %85) #6
  %87 = getelementptr inbounds %"struct.std::pair", ptr %86, i32 0, i32 1
  %88 = load i32, ptr %87, align 4, !tbaa !13
  %89 = add nsw i32 %82, %88
  %90 = load i32, ptr %6, align 4, !tbaa !5
  %91 = sext i32 %90 to i64
  %92 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %91) #6
  %93 = getelementptr inbounds %"struct.std::pair", ptr %92, i32 0, i32 0
  %94 = load i32, ptr %93, align 4, !tbaa !11
  %95 = load i32, ptr %6, align 4, !tbaa !5
  %96 = sext i32 %95 to i64
  %97 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %96) #6
  %98 = getelementptr inbounds %"struct.std::pair", ptr %97, i32 0, i32 1
  %99 = load i32, ptr %98, align 4, !tbaa !13
  %100 = sub nsw i32 %94, %99
  %101 = icmp slt i32 %89, %100
  br i1 %101, label %102, label %105

102:                                              ; preds = %76
  %103 = load i32, ptr %4, align 4, !tbaa !5
  %104 = add nsw i32 %103, 1
  store i32 %104, ptr %4, align 4, !tbaa !5
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %129

105:                                              ; preds = %76
  %106 = load i32, ptr %6, align 4, !tbaa !5
  %107 = sext i32 %106 to i64
  %108 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %107) #6
  %109 = getelementptr inbounds %"struct.std::pair", ptr %108, i32 0, i32 0
  %110 = load i32, ptr %109, align 4, !tbaa !11
  %111 = load i32, ptr %6, align 4, !tbaa !5
  %112 = sext i32 %111 to i64
  %113 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %112) #6
  %114 = getelementptr inbounds %"struct.std::pair", ptr %113, i32 0, i32 1
  %115 = load i32, ptr %114, align 4, !tbaa !13
  %116 = add nsw i32 %110, %115
  %117 = load i32, ptr %6, align 4, !tbaa !5
  %118 = add nsw i32 %117, 1
  %119 = sext i32 %118 to i64
  %120 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %119) #6
  %121 = getelementptr inbounds %"struct.std::pair", ptr %120, i32 0, i32 0
  %122 = load i32, ptr %121, align 4, !tbaa !11
  %123 = icmp slt i32 %116, %122
  br i1 %123, label %124, label %127

124:                                              ; preds = %105
  %125 = load i32, ptr %4, align 4, !tbaa !5
  %126 = add nsw i32 %125, 1
  store i32 %126, ptr %4, align 4, !tbaa !5
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %128

127:                                              ; preds = %105
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %128

128:                                              ; preds = %127, %124
  br label %129

129:                                              ; preds = %128, %102
  br label %130

130:                                              ; preds = %129, %75
  br label %131

131:                                              ; preds = %130
  %132 = load i32, ptr %6, align 4, !tbaa !5
  %133 = add nsw i32 %132, 1
  store i32 %133, ptr %6, align 4, !tbaa !5
  br label %20, !llvm.loop !14

134:                                              ; preds = %25
  %135 = load i32, ptr @n, align 4, !tbaa !5
  %136 = icmp sgt i32 %135, 1
  br i1 %136, label %137, label %140

137:                                              ; preds = %134
  %138 = load i32, ptr %4, align 4, !tbaa !5
  %139 = add nsw i32 %138, 1
  store i32 %139, ptr %4, align 4, !tbaa !5
  br label %140

140:                                              ; preds = %137, %134
  %141 = load i32, ptr %4, align 4, !tbaa !5
  %142 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %141)
  %143 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %142, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #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 void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #3 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)) #3

; 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 nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #4 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #3 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)) #5

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 = !{!12, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !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::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 }
%"class.std::basic_ostream" = type { ptr, %"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 }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@h = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@t = external dso_local global %"class.std::vector", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@_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 %"struct.std::pair", align 8
  %2 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %3 = load i32, ptr @n, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %5 = icmp sgt i32 %9, 2
  br i1 %5, label %.lr.ph36, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.02732 = phi i32 [ %8, %.lr.ph ], [ 0, %0 ]
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull @x, ptr noundef nonnull @h)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #7
  %7 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) @x, ptr noundef nonnull align 4 dereferenceable(4) @h)
  store i64 %7, ptr %1, align 8
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @t, ptr noundef nonnull align 4 dereferenceable(8) %1)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #7
  %8 = add nuw nsw i32 %.02732, 1
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %50, %0, %.preheader
  %.025.lcssa = phi i32 [ 1, %.preheader ], [ 1, %0 ], [ %spec.select30, %50 ]
  %.lcssa = phi i32 [ %9, %.preheader ], [ %3, %0 ], [ %51, %50 ]
  %11 = icmp sgt i32 %.lcssa, 1
  %12 = zext i1 %11 to i32
  %spec.select = add nsw i32 %.025.lcssa, %12
  %13 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %spec.select)
  %14 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  ret i32 0

.lr.ph36:                                         ; preds = %.preheader, %50
  %indvars.iv = phi i64 [ %indvars.iv.next, %50 ], [ 1, %.preheader ]
  %.02434 = phi i32 [ %.1, %50 ], [ 0, %.preheader ]
  %.02533 = phi i32 [ %spec.select30, %50 ], [ 1, %.preheader ]
  %15 = icmp eq i32 %.02434, 0
  %16 = add nsw i64 %indvars.iv, -1
  %17 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %16) #7
  %18 = load i32, ptr %17, align 4, !tbaa !11
  br i1 %15, label %19, label %27

19:                                               ; preds = %.lr.ph36
  %20 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %23 = getelementptr inbounds i8, ptr %22, i64 4
  %24 = load i32, ptr %23, align 4, !tbaa !13
  %25 = sub nsw i32 %21, %24
  %26 = icmp slt i32 %18, %25
  br i1 %26, label %50, label %.sink.split

27:                                               ; preds = %.lr.ph36
  %28 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %16) #7
  %29 = getelementptr inbounds i8, ptr %28, i64 4
  %30 = load i32, ptr %29, align 4, !tbaa !13
  %31 = add nsw i32 %30, %18
  %32 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %33 = load i32, ptr %32, align 4, !tbaa !11
  %34 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %35 = getelementptr inbounds i8, ptr %34, i64 4
  %36 = load i32, ptr %35, align 4, !tbaa !13
  %37 = sub nsw i32 %33, %36
  %38 = icmp slt i32 %31, %37
  br i1 %38, label %50, label %.sink.split

.sink.split:                                      ; preds = %27, %19
  %39 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %40 = load i32, ptr %39, align 4, !tbaa !11
  %41 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %indvars.iv) #7
  %42 = getelementptr inbounds i8, ptr %41, i64 4
  %43 = load i32, ptr %42, align 4, !tbaa !13
  %44 = add nsw i32 %43, %40
  %45 = add nuw nsw i64 %indvars.iv, 1
  %46 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @t, i64 noundef %45) #7
  %47 = load i32, ptr %46, align 4, !tbaa !11
  %48 = icmp slt i32 %44, %47
  %49 = zext i1 %48 to i32
  br label %50

50:                                               ; preds = %.sink.split, %27, %19
  %.sink = phi i32 [ 1, %19 ], [ 1, %27 ], [ %49, %.sink.split ]
  %.1.shrunk = phi i1 [ false, %19 ], [ false, %27 ], [ %48, %.sink.split ]
  %spec.select30 = add nuw nsw i32 %.02533, %.sink
  %.1 = zext i1 %.1.shrunk to i32
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %51 = load i32, ptr @n, align 4, !tbaa !5
  %52 = add nsw i32 %51, -1
  %53 = sext i32 %52 to i64
  %54 = icmp slt i64 %indvars.iv.next, %53
  br i1 %54, label %.lr.ph36, label %._crit_edge, !llvm.loop !14
}

; 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 void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #3 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 #3

; 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 nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #4 align 2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #5

; 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 #3 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)) #6

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 = { "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 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, !6, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}


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