; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 230A. Dragons (main)

; 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::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }
%"struct.std::pair" = type { i32, i32 }

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 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 i32, align 4
  %9 = alloca %"class.std::vector", align 8
  %10 = alloca %"class.std::allocator", align 1
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %14 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  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 4, ptr %8) #6
  br label %15

15:                                               ; preds = %94, %0
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  %17 = icmp ne i32 %16, -1
  br i1 %17, label %18, label %96

18:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 24, ptr %9) #6
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #6
  call void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #6
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %20, ptr noundef nonnull align 1 dereferenceable(1) %10)
          to label %21 unwind label %40

21:                                               ; preds = %18
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #6
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %37, %21
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %26, label %48

26:                                               ; preds = %22
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %28) #6
  %30 = getelementptr inbounds %"struct.std::pair", ptr %29, i32 0, i32 0
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %32) #6
  %34 = getelementptr inbounds %"struct.std::pair", ptr %33, i32 0, i32 1
  %35 = invoke i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %30, ptr noundef %34)
          to label %36 unwind label %44

36:                                               ; preds = %26
  br label %37

37:                                               ; preds = %36
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %4, align 4, !tbaa !5
  br label %22, !llvm.loop !9

40:                                               ; preds = %18
  %41 = landingpad { ptr, i32 }
          cleanup
  %42 = extractvalue { ptr, i32 } %41, 0
  store ptr %42, ptr %11, align 8
  %43 = extractvalue { ptr, i32 } %41, 1
  store i32 %43, ptr %12, align 4
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #6
  br label %95

44:                                               ; preds = %92, %89, %71, %48, %26
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %11, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %12, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #6
  br label %95

48:                                               ; preds = %22
  store i32 1, ptr %7, align 4, !tbaa !5
  %49 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %49, ptr %8, align 4, !tbaa !5
  %50 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #6
  %51 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  store ptr %50, ptr %51, align 8
  %52 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #6
  %53 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %14, i32 0, i32 0
  store ptr %52, ptr %53, align 8
  %54 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %13, i32 0, i32 0
  %55 = load ptr, ptr %54, align 8
  %56 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %14, i32 0, i32 0
  %57 = load ptr, ptr %56, align 8
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS3_SaIS3_EEEEEvT_S9_(ptr %55, ptr %57)
          to label %58 unwind label %44

58:                                               ; preds = %48
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %59

59:                                               ; preds = %83, %58
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = load i32, ptr %3, align 4, !tbaa !5
  %62 = icmp slt i32 %60, %61
  br i1 %62, label %63, label %86

63:                                               ; preds = %59
  %64 = load i32, ptr %8, align 4, !tbaa !5
  %65 = load i32, ptr %4, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %66) #6
  %68 = getelementptr inbounds %"struct.std::pair", ptr %67, i32 0, i32 0
  %69 = load i32, ptr %68, align 4, !tbaa !11
  %70 = icmp sle i32 %64, %69
  br i1 %70, label %71, label %74

71:                                               ; preds = %63
  store i32 0, ptr %7, align 4, !tbaa !5
  %72 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.1)
          to label %73 unwind label %44

73:                                               ; preds = %71
  br label %86

74:                                               ; preds = %63
  %75 = load i32, ptr %4, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %9, i64 noundef %76) #6
  %78 = getelementptr inbounds %"struct.std::pair", ptr %77, i32 0, i32 1
  %79 = load i32, ptr %78, align 4, !tbaa !13
  %80 = load i32, ptr %8, align 4, !tbaa !5
  %81 = add nsw i32 %80, %79
  store i32 %81, ptr %8, align 4, !tbaa !5
  br label %82

82:                                               ; preds = %74
  br label %83

83:                                               ; preds = %82
  %84 = load i32, ptr %4, align 4, !tbaa !5
  %85 = add nsw i32 %84, 1
  store i32 %85, ptr %4, align 4, !tbaa !5
  br label %59, !llvm.loop !14

86:                                               ; preds = %73, %59
  %87 = load i32, ptr %7, align 4, !tbaa !5
  %88 = icmp ne i32 %87, 0
  br i1 %88, label %89, label %92

89:                                               ; preds = %86
  %90 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.2)
          to label %91 unwind label %44

91:                                               ; preds = %89
  br label %92

92:                                               ; preds = %91, %86
  %93 = invoke i32 (ptr, ...) @printf(ptr noundef @.str.3)
          to label %94 unwind label %44

94:                                               ; preds = %92
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr %9) #6
  br label %15, !llvm.loop !15

95:                                               ; preds = %44, %40
  call void @llvm.lifetime.end.p0(i64 24, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 4, 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 %97

96:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, 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
  ret i32 0

97:                                               ; preds = %95
  %98 = load ptr, ptr %11, align 8
  %99 = load i32, ptr %12, align 4
  %100 = insertvalue { ptr, i32 } poison, ptr %98, 0
  %101 = insertvalue { ptr, i32 } %100, i32 %99, 1
  resume { ptr, i32 } %101
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, 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

; 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) #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS3_SaIS3_EEEEEvT_S9_(ptr, ptr) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(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 = 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}


; 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::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = 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 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::vector", align 8
  %4 = 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
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not24 = icmp eq i32 %5, -1
  br i1 %.not24, label %._crit_edge27, label %.lr.ph26

.lr.ph26:                                         ; preds = %0, %.critedge
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %3) #6
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #6
  call void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  invoke void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %7, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %8 unwind label %18

8:                                                ; preds = %.lr.ph26
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %8, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %8 ]
  %11 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #6
  %12 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv) #6
  %13 = getelementptr inbounds i8, ptr %12, i64 4
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %11, ptr noundef nonnull %13)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next, %16
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !9

18:                                               ; preds = %.lr.ph26
  %19 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #6
  br label %40

20:                                               ; preds = %._crit_edge
  %21 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  br label %40

._crit_edge:                                      ; preds = %.lr.ph, %8
  %22 = load i32, ptr %1, align 4, !tbaa !5
  %23 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  %24 = call ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  invoke void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS3_SaIS3_EEEEEvT_S9_(ptr %23, ptr %24)
          to label %.preheader unwind label %20

.preheader:                                       ; preds = %._crit_edge
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %.lr.ph23, label %.critedge

.lr.ph23:                                         ; preds = %.preheader, %29
  %indvars.iv29 = phi i64 [ %indvars.iv.next30, %29 ], [ 0, %.preheader ]
  %.01621 = phi i32 [ %33, %29 ], [ %22, %.preheader ]
  %27 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv29) #6
  %28 = load i32, ptr %27, align 4, !tbaa !11
  %.not18 = icmp sgt i32 %.01621, %28
  br i1 %.not18, label %29, label %.critedge

29:                                               ; preds = %.lr.ph23
  %30 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %indvars.iv29) #6
  %31 = getelementptr inbounds i8, ptr %30, i64 4
  %32 = load i32, ptr %31, align 4, !tbaa !13
  %33 = add nsw i32 %32, %.01621
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = icmp slt i64 %indvars.iv.next30, %35
  br i1 %36, label %.lr.ph23, label %.critedge, !llvm.loop !14

.critedge:                                        ; preds = %29, %.lr.ph23, %.preheader
  %.str.1.sink = phi ptr [ @.str.2, %.preheader ], [ @.str.1, %.lr.ph23 ], [ @.str.2, %29 ]
  %37 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.1.sink)
  %38 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %3) #6
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %3) #6
  %39 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not = icmp eq i32 %39, -1
  br i1 %.not, label %._crit_edge27, label %.lr.ph26, !llvm.loop !15

40:                                               ; preds = %20, %18
  %.pn = phi { ptr, i32 } [ %21, %20 ], [ %19, %18 ]
  call void @llvm.lifetime.end.p0(i64 24, 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

._crit_edge27:                                    ; preds = %.critedge, %0
  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
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaISt4pairIiiEEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2EmRKS2_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, 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

; 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 #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIN9__gnu_cxx17__normal_iteratorIPSt4pairIiiESt6vectorIS3_SaIS3_EEEEEvT_S9_(ptr, ptr) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorISt4pairIiiESaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorISt4pairIiiEED2Ev(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 = { 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 #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 = 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}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass