; LLVM IR from TLE-MEC/Hack-CP-DSA :: Codechef/Bus full of passengers (solution)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [14 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %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 i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i8, align 1
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i8, align 1
  %12 = alloca %"class.std::vector", align 8
  %13 = alloca i32, align 4
  %14 = alloca %"class.std::allocator", align 1
  %15 = alloca ptr, align 8
  %16 = alloca i32, align 4
  %17 = alloca i32, align 4
  %18 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #6
  %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.lifetime.start.p0(i64 4, ptr %9) #6
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %132, %0
  %21 = load i32, ptr %9, align 4, !tbaa !5
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  store i32 2, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  br label %137

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #6
  store i8 1, ptr %11, align 1, !tbaa !9
  %26 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %27 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %26, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %28 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %27, ptr noundef nonnull align 4 dereferenceable(4) %5)
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #6
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #6
  store i32 0, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %14) #6
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %30, ptr noundef nonnull align 4 dereferenceable(4) %13, ptr noundef nonnull align 1 dereferenceable(1) %14)
          to label %31 unwind label %37

31:                                               ; preds = %25
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #6
  store i32 0, ptr %17, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #6
  store i32 0, ptr %18, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %99, %31
  %33 = load i32, ptr %18, align 4, !tbaa !5
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = icmp slt i32 %33, %34
  br i1 %35, label %41, label %36

36:                                               ; preds = %32
  store i32 5, ptr %10, align 4
  br label %102

37:                                               ; preds = %25
  %38 = landingpad { ptr, i32 }
          cleanup
  %39 = extractvalue { ptr, i32 } %38, 0
  store ptr %39, ptr %15, align 8
  %40 = extractvalue { ptr, i32 } %38, 1
  store i32 %40, ptr %16, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #6
  br label %136

41:                                               ; preds = %32
  %42 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %43 unwind label %69

43:                                               ; preds = %41
  %44 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %42, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %45 unwind label %69

45:                                               ; preds = %43
  %46 = load i8, ptr %8, align 1, !tbaa !11
  %47 = sext i8 %46 to i32
  %48 = icmp eq i32 %47, 43
  br i1 %48, label %49, label %74

49:                                               ; preds = %45
  %50 = load i32, ptr %7, align 4, !tbaa !5
  %51 = sub nsw i32 %50, 1
  %52 = sext i32 %51 to i64
  %53 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %52) #6
  %54 = load i32, ptr %53, align 4, !tbaa !5
  %55 = icmp eq i32 %54, 0
  br i1 %55, label %56, label %74

56:                                               ; preds = %49
  %57 = load i32, ptr %7, align 4, !tbaa !5
  %58 = sub nsw i32 %57, 1
  %59 = sext i32 %58 to i64
  %60 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %59) #6
  store i32 1, ptr %60, align 4, !tbaa !5
  %61 = load i32, ptr %17, align 4, !tbaa !5
  %62 = add nsw i32 %61, 1
  store i32 %62, ptr %17, align 4, !tbaa !5
  %63 = load i32, ptr %17, align 4, !tbaa !5
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = icmp sgt i32 %63, %64
  br i1 %65, label %66, label %73

66:                                               ; preds = %56
  %67 = load i32, ptr %18, align 4, !tbaa !5
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %6, align 4, !tbaa !5
  store i8 0, ptr %11, align 1, !tbaa !9
  store i32 5, ptr %10, align 4
  br label %102

69:                                               ; preds = %43, %41
  %70 = landingpad { ptr, i32 }
          cleanup
  %71 = extractvalue { ptr, i32 } %70, 0
  store ptr %71, ptr %15, align 8
  %72 = extractvalue { ptr, i32 } %70, 1
  store i32 %72, ptr %16, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #6
  br label %135

73:                                               ; preds = %56
  br label %98

74:                                               ; preds = %49, %45
  %75 = load i8, ptr %8, align 1, !tbaa !11
  %76 = sext i8 %75 to i32
  %77 = icmp eq i32 %76, 45
  br i1 %77, label %78, label %94

78:                                               ; preds = %74
  %79 = load i32, ptr %7, align 4, !tbaa !5
  %80 = sub nsw i32 %79, 1
  %81 = sext i32 %80 to i64
  %82 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %81) #6
  %83 = load i32, ptr %82, align 4, !tbaa !5
  %84 = icmp eq i32 %83, 1
  br i1 %84, label %85, label %94

85:                                               ; preds = %78
  %86 = load i32, ptr %7, align 4, !tbaa !5
  %87 = sub nsw i32 %86, 1
  %88 = sext i32 %87 to i64
  %89 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %88) #6
  %90 = load i32, ptr %89, align 4, !tbaa !5
  %91 = icmp eq i32 %90, 0
  %92 = load i32, ptr %17, align 4, !tbaa !5
  %93 = add nsw i32 %92, -1
  store i32 %93, ptr %17, align 4, !tbaa !5
  br label %97

94:                                               ; preds = %78, %74
  store i8 0, ptr %11, align 1, !tbaa !9
  %95 = load i32, ptr %18, align 4, !tbaa !5
  %96 = add nsw i32 %95, 1
  store i32 %96, ptr %6, align 4, !tbaa !5
  store i32 5, ptr %10, align 4
  br label %102

97:                                               ; preds = %85
  br label %98

98:                                               ; preds = %97, %73
  br label %99

99:                                               ; preds = %98
  %100 = load i32, ptr %18, align 4, !tbaa !5
  %101 = add nsw i32 %100, 1
  store i32 %101, ptr %18, align 4, !tbaa !5
  br label %32, !llvm.loop !12

102:                                              ; preds = %94, %66, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #6
  br label %103

103:                                              ; preds = %102
  %104 = load i8, ptr %11, align 1, !tbaa !9, !range !14, !noundef !15
  %105 = trunc i8 %104 to i1
  %106 = zext i1 %105 to i32
  %107 = icmp eq i32 %106, 0
  br i1 %107, label %108, label %128

108:                                              ; preds = %103
  br label %109

109:                                              ; preds = %118, %108
  %110 = load i32, ptr %6, align 4, !tbaa !5
  %111 = load i32, ptr %5, align 4, !tbaa !5
  %112 = icmp slt i32 %110, %111
  br i1 %112, label %113, label %125

113:                                              ; preds = %109
  %114 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %115 unwind label %121

115:                                              ; preds = %113
  %116 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %114, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %117 unwind label %121

117:                                              ; preds = %115
  br label %118

118:                                              ; preds = %117
  %119 = load i32, ptr %6, align 4, !tbaa !5
  %120 = add nsw i32 %119, 1
  store i32 %120, ptr %6, align 4, !tbaa !5
  br label %109, !llvm.loop !16

121:                                              ; preds = %128, %125, %115, %113
  %122 = landingpad { ptr, i32 }
          cleanup
  %123 = extractvalue { ptr, i32 } %122, 0
  store ptr %123, ptr %15, align 8
  %124 = extractvalue { ptr, i32 } %122, 1
  store i32 %124, ptr %16, align 4
  br label %135

125:                                              ; preds = %109
  %126 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
          to label %127 unwind label %121

127:                                              ; preds = %125
  br label %131

128:                                              ; preds = %103
  %129 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %130 unwind label %121

130:                                              ; preds = %128
  br label %131

131:                                              ; preds = %130, %127
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #6
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #6
  br label %132

132:                                              ; preds = %131
  %133 = load i32, ptr %9, align 4, !tbaa !5
  %134 = add nsw i32 %133, 1
  store i32 %134, ptr %9, align 4, !tbaa !5
  br label %20, !llvm.loop !17

135:                                              ; preds = %121, %69
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #6
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #6
  br label %136

136:                                              ; preds = %135, %37
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  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 %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %139

137:                                              ; preds = %24
  store i32 0, ptr %1, align 4
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  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 %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  %138 = load i32, ptr %1, align 4
  ret i32 %138

139:                                              ; preds = %136
  %140 = load ptr, ptr %15, align 8
  %141 = load i32, ptr %16, align 4
  %142 = insertvalue { ptr, i32 } poison, ptr %140, 0
  %143 = insertvalue { ptr, i32 } %142, i32 %141, 1
  resume { ptr, i32 } %143
}

; 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: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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 = { "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 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 #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 = { 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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = distinct !{!16, !13}
!17 = distinct !{!17, !13}


; 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" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [14 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %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 i8, align 1
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #6
  %10 = 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)
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph36, label %._crit_edge37

._crit_edge37:                                    ; preds = %72, %0
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

.lr.ph36:                                         ; preds = %0, %72
  %.02034 = phi i32 [ %73, %72 ], [ 0, %0 ]
  %13 = 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)
  %14 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %13, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %15 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %14, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %7) #6
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #6
  store i32 0, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %9) #6
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %17, ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 1 dereferenceable(1) %9)
          to label %18 unwind label %20

18:                                               ; preds = %.lr.ph36
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #6
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %.not2431 = icmp sgt i32 %19, 0
  br i1 %.not2431, label %.lr.ph, label %.invoke

20:                                               ; preds = %.lr.ph36
  %21 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %9) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %9) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #6
  br label %77

.lr.ph:                                           ; preds = %18, %60
  %.033 = phi i32 [ %61, %60 ], [ 0, %18 ]
  %.01432 = phi i32 [ %.1, %60 ], [ 0, %18 ]
  %22 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %23 unwind label %42

23:                                               ; preds = %.lr.ph
  %24 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %22, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %25 unwind label %42

25:                                               ; preds = %23
  %26 = load i8, ptr %6, align 1, !tbaa !9
  %27 = icmp eq i8 %26, 43
  br i1 %27, label %28, label %44

28:                                               ; preds = %25
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = add nsw i32 %29, -1
  %31 = sext i32 %30 to i64
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %31) #6
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = icmp eq i32 %33, 0
  br i1 %34, label %35, label %thread-pre-split

35:                                               ; preds = %28
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = add nsw i32 %36, -1
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %38) #6
  store i32 1, ptr %39, align 4, !tbaa !5
  %40 = add nsw i32 %.01432, 1
  %41 = load i32, ptr %3, align 4, !tbaa !5
  %.not = icmp slt i32 %.01432, %41
  br i1 %.not, label %60, label %.preheader

.preheader:                                       ; preds = %44, %47, %35
  br label %63

42:                                               ; preds = %23, %.lr.ph
  %43 = landingpad { ptr, i32 }
          cleanup
  br label %76

thread-pre-split:                                 ; preds = %28
  %.pr = load i8, ptr %6, align 1, !tbaa !9
  br label %44

44:                                               ; preds = %thread-pre-split, %25
  %45 = phi i8 [ %.pr, %thread-pre-split ], [ %26, %25 ]
  %46 = icmp eq i8 %45, 45
  br i1 %46, label %47, label %.preheader

47:                                               ; preds = %44
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = add nsw i32 %48, -1
  %50 = sext i32 %49 to i64
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %50) #6
  %52 = load i32, ptr %51, align 4, !tbaa !5
  %53 = icmp eq i32 %52, 1
  br i1 %53, label %54, label %.preheader

54:                                               ; preds = %47
  %55 = load i32, ptr %5, align 4, !tbaa !5
  %56 = add nsw i32 %55, -1
  %57 = sext i32 %56 to i64
  %58 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %57) #6
  %59 = add nsw i32 %.01432, -1
  br label %60

60:                                               ; preds = %54, %35
  %.1 = phi i32 [ %40, %35 ], [ %59, %54 ]
  %61 = add nuw nsw i32 %.033, 1
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %.not24 = icmp slt i32 %61, %62
  br i1 %.not24, label %.lr.ph, label %.invoke, !llvm.loop !10

63:                                               ; preds = %.preheader, %68
  %.2.in = phi i32 [ %.2, %68 ], [ %.033, %.preheader ]
  %.2 = add nuw nsw i32 %.2.in, 1
  %64 = load i32, ptr %4, align 4, !tbaa !5
  %65 = icmp slt i32 %.2, %64
  br i1 %65, label %66, label %.invoke

66:                                               ; preds = %63
  %67 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %68 unwind label %.loopexit

68:                                               ; preds = %66
  %69 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %67, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %63 unwind label %.loopexit, !llvm.loop !12

.loopexit:                                        ; preds = %66, %68
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %76

.loopexit.split-lp:                               ; preds = %.invoke
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %76

.invoke:                                          ; preds = %60, %63, %18
  %70 = phi ptr [ @.str.1, %18 ], [ @.str, %63 ], [ @.str.1, %60 ]
  %71 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull %70)
          to label %72 unwind label %.loopexit.split-lp

72:                                               ; preds = %.invoke
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #6
  %73 = add nuw nsw i32 %.02034, 1
  %74 = load i32, ptr %1, align 4, !tbaa !5
  %75 = icmp slt i32 %73, %74
  br i1 %75, label %.lr.ph36, label %._crit_edge37, !llvm.loop !13

76:                                               ; preds = %.loopexit, %.loopexit.split-lp, %42
  %.pn = phi { ptr, i32 } [ %43, %42 ], [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #6
  br label %77

77:                                               ; preds = %76, %20
  %.pn.pn = phi { ptr, i32 } [ %.pn, %76 ], [ %21, %20 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn.pn
}

; 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 nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKiRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #4 align 2

declare i32 @__gxx_personality_v0(...)

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_RS3_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

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 = { "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 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 #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 = { 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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}
!13 = distinct !{!13, !11}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass