; LLVM IR from eyangch/competitive-programming :: Codeforces/4 (b)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 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 ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #8
  %17 = 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)
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %17, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = zext i32 %19 to i64
  %21 = call ptr @llvm.stacksave.p0()
  store ptr %21, ptr %4, align 8
  %22 = alloca %"struct.std::pair", i64 %20, align 16
  store i64 %20, ptr %5, align 8
  %23 = icmp eq i64 %20, 0
  br i1 %23, label %30, label %24

24:                                               ; preds = %0
  %25 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %20
  br label %26

26:                                               ; preds = %26, %24
  %27 = phi ptr [ %22, %24 ], [ %28, %26 ]
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %27)
  %28 = getelementptr inbounds %"struct.std::pair", ptr %27, i64 1
  %29 = icmp eq ptr %28, %25
  br i1 %29, label %30, label %26

30:                                               ; preds = %26, %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #8
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %47, %30
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = icmp slt i32 %32, %33
  br i1 %34, label %36, label %35

35:                                               ; preds = %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #8
  br label %50

36:                                               ; preds = %31
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %38
  %40 = getelementptr inbounds %"struct.std::pair", ptr %39, i32 0, i32 0
  %41 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %40)
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %43
  %45 = getelementptr inbounds %"struct.std::pair", ptr %44, i32 0, i32 1
  %46 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %41, ptr noundef nonnull align 4 dereferenceable(4) %45)
  br label %47

47:                                               ; preds = %36
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %6, align 4, !tbaa !5
  br label %31, !llvm.loop !9

50:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #8
  store i32 0, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #8
  store i32 0, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #8
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %51

51:                                               ; preds = %71, %50
  %52 = load i32, ptr %9, align 4, !tbaa !5
  %53 = load i32, ptr %2, align 4, !tbaa !5
  %54 = icmp slt i32 %52, %53
  br i1 %54, label %56, label %55

55:                                               ; preds = %51
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #8
  br label %74

56:                                               ; preds = %51
  %57 = load i32, ptr %9, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %58
  %60 = getelementptr inbounds %"struct.std::pair", ptr %59, i32 0, i32 0
  %61 = load i32, ptr %60, align 8, !tbaa !11
  %62 = load i32, ptr %7, align 4, !tbaa !5
  %63 = add nsw i32 %62, %61
  store i32 %63, ptr %7, align 4, !tbaa !5
  %64 = load i32, ptr %9, align 4, !tbaa !5
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %65
  %67 = getelementptr inbounds %"struct.std::pair", ptr %66, i32 0, i32 1
  %68 = load i32, ptr %67, align 4, !tbaa !13
  %69 = load i32, ptr %8, align 4, !tbaa !5
  %70 = add nsw i32 %69, %68
  store i32 %70, ptr %8, align 4, !tbaa !5
  br label %71

71:                                               ; preds = %56
  %72 = load i32, ptr %9, align 4, !tbaa !5
  %73 = add nsw i32 %72, 1
  store i32 %73, ptr %9, align 4, !tbaa !5
  br label %51, !llvm.loop !14

74:                                               ; preds = %55
  %75 = load i32, ptr %7, align 4, !tbaa !5
  %76 = load i32, ptr %3, align 4, !tbaa !5
  %77 = icmp sgt i32 %75, %76
  br i1 %77, label %82, label %78

78:                                               ; preds = %74
  %79 = load i32, ptr %8, align 4, !tbaa !5
  %80 = load i32, ptr %3, align 4, !tbaa !5
  %81 = icmp slt i32 %79, %80
  br i1 %81, label %82, label %85

82:                                               ; preds = %78, %74
  %83 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  %84 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %83, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %10, align 4
  br label %155

85:                                               ; preds = %78
  %86 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
  %87 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %86, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #8
  %88 = load i32, ptr %3, align 4, !tbaa !5
  %89 = load i32, ptr %7, align 4, !tbaa !5
  %90 = sub nsw i32 %88, %89
  store i32 %90, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #8
  store i32 0, ptr %12, align 4, !tbaa !5
  br label %91

91:                                               ; preds = %94, %85
  %92 = load i32, ptr %11, align 4, !tbaa !5
  %93 = icmp sgt i32 %92, 0
  br i1 %93, label %94, label %128

94:                                               ; preds = %91
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #8
  %95 = load i32, ptr %12, align 4, !tbaa !5
  %96 = sext i32 %95 to i64
  %97 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %96
  %98 = getelementptr inbounds %"struct.std::pair", ptr %97, i32 0, i32 0
  %99 = load i32, ptr %98, align 8, !tbaa !11
  store i32 %99, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #8
  %100 = load i32, ptr %12, align 4, !tbaa !5
  %101 = sext i32 %100 to i64
  %102 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %101
  %103 = getelementptr inbounds %"struct.std::pair", ptr %102, i32 0, i32 1
  %104 = load i32, ptr %103, align 4, !tbaa !13
  %105 = load i32, ptr %13, align 4, !tbaa !5
  %106 = sub nsw i32 %104, %105
  store i32 %106, ptr %14, align 4, !tbaa !5
  %107 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %11)
  %108 = load i32, ptr %107, align 4, !tbaa !5
  %109 = load i32, ptr %12, align 4, !tbaa !5
  %110 = sext i32 %109 to i64
  %111 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %110
  %112 = getelementptr inbounds %"struct.std::pair", ptr %111, i32 0, i32 0
  %113 = load i32, ptr %112, align 8, !tbaa !11
  %114 = add nsw i32 %113, %108
  store i32 %114, ptr %112, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #8
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #8
  %115 = load i32, ptr %12, align 4, !tbaa !5
  %116 = sext i32 %115 to i64
  %117 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %116
  %118 = getelementptr inbounds %"struct.std::pair", ptr %117, i32 0, i32 1
  %119 = load i32, ptr %118, align 4, !tbaa !13
  %120 = load i32, ptr %13, align 4, !tbaa !5
  %121 = sub nsw i32 %119, %120
  store i32 %121, ptr %15, align 4, !tbaa !5
  %122 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %11)
  %123 = load i32, ptr %122, align 4, !tbaa !5
  %124 = load i32, ptr %11, align 4, !tbaa !5
  %125 = sub nsw i32 %124, %123
  store i32 %125, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #8
  %126 = load i32, ptr %12, align 4, !tbaa !5
  %127 = add nsw i32 %126, 1
  store i32 %127, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #8
  br label %91, !llvm.loop !15

128:                                              ; preds = %91
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #8
  store i32 0, ptr %16, align 4, !tbaa !5
  br label %129

129:                                              ; preds = %143, %128
  %130 = load i32, ptr %16, align 4, !tbaa !5
  %131 = load i32, ptr %2, align 4, !tbaa !5
  %132 = sub nsw i32 %131, 1
  %133 = icmp slt i32 %130, %132
  br i1 %133, label %135, label %134

134:                                              ; preds = %129
  store i32 10, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #8
  br label %146

135:                                              ; preds = %129
  %136 = load i32, ptr %16, align 4, !tbaa !5
  %137 = sext i32 %136 to i64
  %138 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %137
  %139 = getelementptr inbounds %"struct.std::pair", ptr %138, i32 0, i32 0
  %140 = load i32, ptr %139, align 8, !tbaa !11
  %141 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %140)
  %142 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %141, ptr noundef @.str.2)
  br label %143

143:                                              ; preds = %135
  %144 = load i32, ptr %16, align 4, !tbaa !5
  %145 = add nsw i32 %144, 1
  store i32 %145, ptr %16, align 4, !tbaa !5
  br label %129, !llvm.loop !16

146:                                              ; preds = %134
  %147 = load i32, ptr %2, align 4, !tbaa !5
  %148 = sub nsw i32 %147, 1
  %149 = sext i32 %148 to i64
  %150 = getelementptr inbounds %"struct.std::pair", ptr %22, i64 %149
  %151 = getelementptr inbounds %"struct.std::pair", ptr %150, i32 0, i32 0
  %152 = load i32, ptr %151, align 8, !tbaa !11
  %153 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %152)
  %154 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %153, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #8
  br label %155

155:                                              ; preds = %146, %82
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #8
  %156 = load ptr, ptr %4, align 8
  call void @llvm.stackrestore.p0(ptr %156)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #8
  %157 = load i32, ptr %1, align 4
  ret i32 %157
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #4 align 2

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

; 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 uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #6 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

; 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

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

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 = { nocallback nofree nosync nounwind willreturn }
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 = { 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 = { 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 0}
!12 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10}
!16 = distinct !{!16, !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::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" }
%"struct.std::pair" = type { i32, i32 }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 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 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #9
  %6 = 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)
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %6, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = zext i32 %8 to i64
  %10 = call ptr @llvm.stacksave.p0()
  %11 = alloca %"struct.std::pair", i64 %9, align 16
  %12 = icmp eq i32 %8, 0
  br i1 %12, label %.loopexit, label %13

13:                                               ; preds = %0
  %14 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %9
  br label %15

15:                                               ; preds = %15, %13
  %16 = phi ptr [ %11, %13 ], [ %17, %15 ]
  call void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %16)
  %17 = getelementptr inbounds i8, ptr %16, i64 8
  %18 = icmp eq ptr %17, %14
  br i1 %18, label %.loopexit, label %15

.loopexit:                                        ; preds = %15, %0
  %19 = load i32, ptr %1, align 4, !tbaa !5
  %20 = icmp sgt i32 %19, 0
  br i1 %20, label %.lr.ph, label %._crit_edge

.preheader33:                                     ; preds = %.lr.ph
  %21 = icmp sgt i32 %36, 0
  br i1 %21, label %.lr.ph39.preheader, label %._crit_edge

.lr.ph39.preheader:                               ; preds = %.preheader33
  %wide.trip.count = zext nneg i32 %36 to i64
  %min.iters.check = icmp ult i32 %36, 8
  br i1 %min.iters.check, label %.lr.ph39.preheader79, label %vector.ph

.lr.ph39.preheader79:                             ; preds = %middle.block, %.lr.ph39.preheader
  %indvars.iv54.ph = phi i64 [ 0, %.lr.ph39.preheader ], [ %n.vec, %middle.block ]
  %.02737.ph = phi i32 [ 0, %.lr.ph39.preheader ], [ %30, %middle.block ]
  %.02836.ph = phi i32 [ 0, %.lr.ph39.preheader ], [ %31, %middle.block ]
  br label %.lr.ph39

vector.ph:                                        ; preds = %.lr.ph39.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %27, %vector.body ]
  %vec.phi70 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %28, %vector.body ]
  %vec.phi71 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %25, %vector.body ]
  %vec.phi72 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %26, %vector.body ]
  %22 = or disjoint i64 %index, 4
  %23 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %index
  %24 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %22
  %wide.vec = load <8 x i32>, ptr %23, align 16, !tbaa !5
  %wide.vec73 = load <8 x i32>, ptr %24, align 16, !tbaa !5
  %strided.vec = shufflevector <8 x i32> %wide.vec, <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
  %strided.vec74 = shufflevector <8 x i32> %wide.vec73, <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
  %strided.vec75 = shufflevector <8 x i32> %wide.vec, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
  %strided.vec76 = shufflevector <8 x i32> %wide.vec73, <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
  %25 = add <4 x i32> %strided.vec, %vec.phi71
  %26 = add <4 x i32> %strided.vec74, %vec.phi72
  %27 = add <4 x i32> %strided.vec75, %vec.phi
  %28 = add <4 x i32> %strided.vec76, %vec.phi70
  %index.next = add nuw i64 %index, 8
  %29 = icmp eq i64 %index.next, %n.vec
  br i1 %29, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %28, %27
  %30 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %bin.rdx77 = add <4 x i32> %26, %25
  %31 = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx77)
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph39.preheader79

.lr.ph:                                           ; preds = %.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.loopexit ]
  %32 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %indvars.iv
  %33 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %32)
  %34 = getelementptr inbounds i8, ptr %32, i64 4
  %35 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %33, ptr noundef nonnull align 4 dereferenceable(4) %34)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %36 = load i32, ptr %1, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = icmp slt i64 %indvars.iv.next, %37
  br i1 %38, label %.lr.ph, label %.preheader33, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph39, %middle.block, %.loopexit, %.preheader33
  %.028.lcssa = phi i32 [ 0, %.preheader33 ], [ 0, %.loopexit ], [ %31, %middle.block ], [ %44, %.lr.ph39 ]
  %.027.lcssa = phi i32 [ 0, %.preheader33 ], [ 0, %.loopexit ], [ %30, %middle.block ], [ %47, %.lr.ph39 ]
  %39 = load i32, ptr %2, align 4, !tbaa !5
  %40 = icmp sgt i32 %.028.lcssa, %39
  %41 = icmp slt i32 %.027.lcssa, %39
  %or.cond = select i1 %40, i1 true, i1 %41
  br i1 %or.cond, label %48, label %51

.lr.ph39:                                         ; preds = %.lr.ph39.preheader79, %.lr.ph39
  %indvars.iv54 = phi i64 [ %indvars.iv.next55, %.lr.ph39 ], [ %indvars.iv54.ph, %.lr.ph39.preheader79 ]
  %.02737 = phi i32 [ %47, %.lr.ph39 ], [ %.02737.ph, %.lr.ph39.preheader79 ]
  %.02836 = phi i32 [ %44, %.lr.ph39 ], [ %.02836.ph, %.lr.ph39.preheader79 ]
  %42 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %indvars.iv54
  %43 = load i32, ptr %42, align 8, !tbaa !14
  %44 = add nsw i32 %43, %.02836
  %45 = getelementptr inbounds i8, ptr %42, i64 4
  %46 = load i32, ptr %45, align 4, !tbaa !16
  %47 = add nsw i32 %46, %.02737
  %indvars.iv.next55 = add nuw nsw i64 %indvars.iv54, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next55, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph39, !llvm.loop !17

48:                                               ; preds = %._crit_edge
  %49 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  %50 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %49, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  br label %88

51:                                               ; preds = %._crit_edge
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str.1)
  %53 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %52, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #9
  %54 = load i32, ptr %2, align 4, !tbaa !5
  %55 = sub nsw i32 %54, %.028.lcssa
  store i32 %55, ptr %3, align 4, !tbaa !5
  %56 = icmp sgt i32 %55, 0
  br i1 %56, label %.lr.ph44, label %.preheader

.preheader:                                       ; preds = %.lr.ph44, %51
  %57 = load i32, ptr %1, align 4, !tbaa !5
  %58 = icmp sgt i32 %57, 1
  br i1 %58, label %.lr.ph46, label %.preheader.._crit_edge47_crit_edge

.preheader.._crit_edge47_crit_edge:               ; preds = %.preheader
  %59 = add nsw i32 %57, -1
  %.pre = sext i32 %59 to i64
  br label %._crit_edge47

.lr.ph44:                                         ; preds = %51, %.lr.ph44
  %indvars.iv57 = phi i64 [ %indvars.iv.next58, %.lr.ph44 ], [ 0, %51 ]
  %60 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %indvars.iv57
  %61 = load i32, ptr %60, align 8, !tbaa !14
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #9
  %62 = getelementptr inbounds i8, ptr %60, i64 4
  %63 = load i32, ptr %62, align 4, !tbaa !16
  %64 = sub nsw i32 %63, %61
  store i32 %64, ptr %4, align 4, !tbaa !5
  %65 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %66 = load i32, ptr %65, align 4, !tbaa !5
  %67 = load i32, ptr %60, align 8, !tbaa !14
  %68 = add nsw i32 %67, %66
  store i32 %68, ptr %60, align 8, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #9
  %69 = load i32, ptr %62, align 4, !tbaa !16
  %70 = sub nsw i32 %69, %61
  store i32 %70, ptr %5, align 4, !tbaa !5
  %71 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %72 = load i32, ptr %71, align 4, !tbaa !5
  %73 = load i32, ptr %3, align 4, !tbaa !5
  %74 = sub nsw i32 %73, %72
  store i32 %74, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #9
  %indvars.iv.next58 = add nuw nsw i64 %indvars.iv57, 1
  %75 = icmp sgt i32 %74, 0
  br i1 %75, label %.lr.ph44, label %.preheader, !llvm.loop !18

._crit_edge47:                                    ; preds = %.lr.ph46, %.preheader.._crit_edge47_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.preheader.._crit_edge47_crit_edge ], [ %86, %.lr.ph46 ]
  %76 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %.pre-phi
  %77 = load i32, ptr %76, align 8, !tbaa !14
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %77)
  %79 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %78, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #9
  br label %88

.lr.ph46:                                         ; preds = %.preheader, %.lr.ph46
  %indvars.iv60 = phi i64 [ %indvars.iv.next61, %.lr.ph46 ], [ 0, %.preheader ]
  %80 = getelementptr inbounds %"struct.std::pair", ptr %11, i64 %indvars.iv60
  %81 = load i32, ptr %80, align 8, !tbaa !14
  %82 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i32 noundef %81)
  %83 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %82, ptr noundef nonnull @.str.2)
  %indvars.iv.next61 = add nuw nsw i64 %indvars.iv60, 1
  %84 = load i32, ptr %1, align 4, !tbaa !5
  %85 = add nsw i32 %84, -1
  %86 = sext i32 %85 to i64
  %87 = icmp slt i64 %indvars.iv.next61, %86
  br i1 %87, label %.lr.ph46, label %._crit_edge47, !llvm.loop !19

88:                                               ; preds = %._crit_edge47, %48
  call void @llvm.stackrestore.p0(ptr %10)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #9
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #9
  ret i32 0
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIiiEC2IiiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #4 align 2

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

; Function Attrs: 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 uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #6 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

; 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 #7

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #8

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 nocallback nofree nosync nounwind willreturn }
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 = { 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 = { 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #9 = { 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, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10}
!14 = !{!15, !6, i64 0}
!15 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!16 = !{!15, !6, i64 4}
!17 = distinct !{!17, !10, !12, !11}
!18 = distinct !{!18, !10}
!19 = distinct !{!19, !10}


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