; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/Good Bye 2014/Problem E (E)

; 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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@p = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@y = external dso_local global i32, align 4
@r = external dso_local global [262144 x i32], align 16
@u = external dso_local global [262144 x i32], align 16
@d = external dso_local global %"class.std::vector", align 8
@s = external dso_local global %"class.std::stack", align 8
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z11sparseTablev() #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.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) #0 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: mustprogress uwtable
declare dso_local void @_Z5queryv() #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"struct.std::pair", align 4
  %4 = alloca %"struct.std::pair", align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"struct.std::pair", align 4
  store i32 0, ptr %1, align 4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %17, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %20

14:                                               ; preds = %9
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef @p, ptr noundef @l)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #6
  %16 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) @p, ptr noundef nonnull align 4 dereferenceable(4) @l)
  store i64 %16, ptr %3, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @d, ptr noundef nonnull align 4 dereferenceable(8) %3)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #6
  br label %17

17:                                               ; preds = %14
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !9

20:                                               ; preds = %13
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = sub nsw i32 %21, 1
  %23 = sext i32 %22 to i64
  %24 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %23) #6
  %25 = getelementptr inbounds %"struct.std::pair", ptr %24, i32 0, i32 0
  %26 = load i32, ptr %25, align 4, !tbaa !11
  %27 = load i32, ptr @n, align 4, !tbaa !5
  %28 = sub nsw i32 %27, 1
  %29 = sext i32 %28 to i64
  %30 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %29) #6
  %31 = getelementptr inbounds %"struct.std::pair", ptr %30, i32 0, i32 1
  %32 = load i32, ptr %31, align 4, !tbaa !13
  %33 = add nsw i32 %26, %32
  %34 = load i32, ptr @n, align 4, !tbaa !5
  %35 = sub nsw i32 %34, 1
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %36
  store i32 %33, ptr %37, align 4, !tbaa !5
  %38 = load i32, ptr @n, align 4, !tbaa !5
  %39 = load i32, ptr @n, align 4, !tbaa !5
  %40 = sub nsw i32 %39, 1
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [262144 x i32], ptr @u, i64 0, i64 %41
  store i32 %38, ptr %42, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  %43 = load i32, ptr @n, align 4, !tbaa !5
  %44 = sub nsw i32 %43, 1
  store i32 %44, ptr %5, align 4, !tbaa !5
  %45 = load i32, ptr @n, align 4, !tbaa !5
  %46 = sub nsw i32 %45, 1
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %47
  %49 = call i64 @_ZSt9make_pairIiRiESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %48)
  store i64 %49, ptr %4, align 4
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @s, ptr noundef nonnull align 4 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %50 = load i32, ptr @n, align 4, !tbaa !5
  %51 = sub nsw i32 %50, 2
  store i32 %51, ptr %6, align 4, !tbaa !5
  br label %52

52:                                               ; preds = %122, %20
  %53 = load i32, ptr %6, align 4, !tbaa !5
  %54 = icmp sge i32 %53, 0
  br i1 %54, label %56, label %55

55:                                               ; preds = %52
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  br label %125

56:                                               ; preds = %52
  %57 = load i32, ptr %6, align 4, !tbaa !5
  %58 = sext i32 %57 to i64
  %59 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %58) #6
  %60 = getelementptr inbounds %"struct.std::pair", ptr %59, i32 0, i32 0
  %61 = load i32, ptr %60, align 4, !tbaa !11
  %62 = load i32, ptr %6, align 4, !tbaa !5
  %63 = sext i32 %62 to i64
  %64 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %63) #6
  %65 = getelementptr inbounds %"struct.std::pair", ptr %64, i32 0, i32 1
  %66 = load i32, ptr %65, align 4, !tbaa !13
  %67 = add nsw i32 %61, %66
  %68 = load i32, ptr %6, align 4, !tbaa !5
  %69 = sext i32 %68 to i64
  %70 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %69
  store i32 %67, ptr %70, align 4, !tbaa !5
  br label %71

71:                                               ; preds = %102, %56
  %72 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %73 = xor i1 %72, true
  br i1 %73, label %74, label %103

74:                                               ; preds = %71
  %75 = load i32, ptr %6, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %76
  %78 = load i32, ptr %77, align 4, !tbaa !5
  %79 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %80 = getelementptr inbounds %"struct.std::pair", ptr %79, i32 0, i32 0
  %81 = load i32, ptr %80, align 4, !tbaa !11
  %82 = sext i32 %81 to i64
  %83 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %82) #6
  %84 = getelementptr inbounds %"struct.std::pair", ptr %83, i32 0, i32 0
  %85 = load i32, ptr %84, align 4, !tbaa !11
  %86 = icmp sge i32 %78, %85
  br i1 %86, label %87, label %101

87:                                               ; preds = %74
  %88 = load i32, ptr %6, align 4, !tbaa !5
  %89 = sext i32 %88 to i64
  %90 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %89
  %91 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %92 = getelementptr inbounds %"struct.std::pair", ptr %91, i32 0, i32 0
  %93 = load i32, ptr %92, align 4, !tbaa !11
  %94 = sext i32 %93 to i64
  %95 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %94
  %96 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %90, ptr noundef nonnull align 4 dereferenceable(4) %95)
  %97 = load i32, ptr %96, align 4, !tbaa !5
  %98 = load i32, ptr %6, align 4, !tbaa !5
  %99 = sext i32 %98 to i64
  %100 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %99
  store i32 %97, ptr %100, align 4, !tbaa !5
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br label %102

101:                                              ; preds = %74
  br label %103

102:                                              ; preds = %87
  br label %71, !llvm.loop !14

103:                                              ; preds = %101, %71
  %104 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br i1 %104, label %112, label %105

105:                                              ; preds = %103
  %106 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %107 = getelementptr inbounds %"struct.std::pair", ptr %106, i32 0, i32 0
  %108 = load i32, ptr %107, align 4, !tbaa !11
  %109 = load i32, ptr %6, align 4, !tbaa !5
  %110 = sext i32 %109 to i64
  %111 = getelementptr inbounds [262144 x i32], ptr @u, i64 0, i64 %110
  store i32 %108, ptr %111, align 4, !tbaa !5
  br label %117

112:                                              ; preds = %103
  %113 = load i32, ptr @n, align 4, !tbaa !5
  %114 = load i32, ptr %6, align 4, !tbaa !5
  %115 = sext i32 %114 to i64
  %116 = getelementptr inbounds [262144 x i32], ptr @u, i64 0, i64 %115
  store i32 %113, ptr %116, align 4, !tbaa !5
  br label %117

117:                                              ; preds = %112, %105
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %118 = load i32, ptr %6, align 4, !tbaa !5
  %119 = sext i32 %118 to i64
  %120 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %119
  %121 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %120)
  store i64 %121, ptr %7, align 4
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @s, ptr noundef nonnull align 4 dereferenceable(8) %7)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %122

122:                                              ; preds = %117
  %123 = load i32, ptr %6, align 4, !tbaa !5
  %124 = add nsw i32 %123, -1
  store i32 %124, ptr %6, align 4, !tbaa !5
  br label %52, !llvm.loop !15

125:                                              ; preds = %55
  call void @_Z11sparseTablev()
  %126 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.3, ptr noundef @q)
  br label %127

127:                                              ; preds = %131, %125
  %128 = load i32, ptr @q, align 4, !tbaa !5
  %129 = add nsw i32 %128, -1
  store i32 %129, ptr @q, align 4, !tbaa !5
  %130 = icmp ne i32 %128, 0
  br i1 %130, label %131, label %137

131:                                              ; preds = %127
  %132 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.4, ptr noundef @x, ptr noundef @y)
  %133 = load i32, ptr @x, align 4, !tbaa !5
  %134 = add nsw i32 %133, -1
  store i32 %134, ptr @x, align 4, !tbaa !5
  %135 = load i32, ptr @y, align 4, !tbaa !5
  %136 = add nsw i32 %135, -1
  store i32 %136, ptr @y, align 4, !tbaa !5
  call void @_Z5queryv()
  br label %127, !llvm.loop !16

137:                                              ; preds = %127
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIiRiESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #0 align 2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { "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 nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #6 = { 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::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::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@n = external dso_local global i32, align 4
@p = external dso_local global i32, align 4
@l = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@x = external dso_local global i32, align 4
@y = external dso_local global i32, align 4
@r = external dso_local global [262144 x i32], align 16
@u = external dso_local local_unnamed_addr global [262144 x i32], align 16
@d = external dso_local global %"class.std::vector", align 8
@s = external dso_local global %"class.std::stack", align 8
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z11sparseTablev() local_unnamed_addr #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: 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 #0 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: mustprogress uwtable
declare dso_local void @_Z5queryv() local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca %"struct.std::pair", align 8
  %2 = alloca %"struct.std::pair", align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca %"struct.std::pair", align 8
  %6 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull @n)
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.lcssa = phi i32 [ %7, %0 ], [ %32, %.lr.ph ]
  %9 = add nsw i32 %.lcssa, -1
  %10 = sext i32 %9 to i64
  %11 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %10) #6
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = load i32, ptr @n, align 4, !tbaa !5
  %14 = add nsw i32 %13, -1
  %15 = sext i32 %14 to i64
  %16 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %15) #6
  %17 = getelementptr inbounds i8, ptr %16, i64 4
  %18 = load i32, ptr %17, align 4, !tbaa !11
  %19 = add nsw i32 %18, %12
  %20 = load i32, ptr @n, align 4, !tbaa !5
  %21 = add nsw i32 %20, -1
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %22
  store i32 %19, ptr %23, align 4, !tbaa !5
  %24 = getelementptr inbounds [262144 x i32], ptr @u, i64 0, i64 %22
  store i32 %20, ptr %24, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  store i32 %21, ptr %3, align 4, !tbaa !5
  %25 = call i64 @_ZSt9make_pairIiRiESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %23)
  store i64 %25, ptr %2, align 8
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @s, ptr noundef nonnull align 4 dereferenceable(8) %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  %26 = load i32, ptr @n, align 4, !tbaa !5
  %27 = add nsw i32 %26, -2
  store i32 %27, ptr %4, align 4, !tbaa !5
  %28 = icmp sgt i32 %26, 1
  br i1 %28, label %.lr.ph12, label %._crit_edge13

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.05 = phi i32 [ %31, %.lr.ph ], [ 0, %0 ]
  %29 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull @p, ptr noundef nonnull @l)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #6
  %30 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) @p, ptr noundef nonnull align 4 dereferenceable(4) @l)
  store i64 %30, ptr %1, align 8
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) @d, ptr noundef nonnull align 4 dereferenceable(8) %1)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #6
  %31 = add nuw nsw i32 %.05, 1
  %32 = load i32, ptr @n, align 4, !tbaa !5
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge13:                                    ; preds = %76, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @_Z11sparseTablev()
  %34 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.3, ptr noundef nonnull @q)
  %35 = load i32, ptr @q, align 4, !tbaa !5
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr @q, align 4, !tbaa !5
  %.not14 = icmp eq i32 %35, 0
  br i1 %.not14, label %._crit_edge17, label %.lr.ph16

.lr.ph12:                                         ; preds = %._crit_edge, %76
  %storemerge10 = phi i32 [ %82, %76 ], [ %27, %._crit_edge ]
  %37 = zext nneg i32 %storemerge10 to i64
  %38 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %37) #6
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load i32, ptr %4, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %41) #6
  %43 = getelementptr inbounds i8, ptr %42, i64 4
  %44 = load i32, ptr %43, align 4, !tbaa !11
  %45 = add nsw i32 %44, %39
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %47
  store i32 %45, ptr %48, align 4, !tbaa !5
  %49 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br i1 %49, label %._crit_edge8, label %.lr.ph7

.lr.ph7:                                          ; preds = %.lr.ph12, %59
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %51
  %53 = load i32, ptr %52, align 4, !tbaa !5
  %54 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %55 = load i32, ptr %54, align 4, !tbaa !9
  %56 = sext i32 %55 to i64
  %57 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) @d, i64 noundef %56) #6
  %58 = load i32, ptr %57, align 4, !tbaa !9
  %.not4 = icmp slt i32 %53, %58
  br i1 %.not4, label %._crit_edge8, label %59

59:                                               ; preds = %.lr.ph7
  %60 = load i32, ptr %4, align 4, !tbaa !5
  %61 = sext i32 %60 to i64
  %62 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %61
  %63 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %64 = load i32, ptr %63, align 4, !tbaa !9
  %65 = sext i32 %64 to i64
  %66 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %65
  %67 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %62, ptr noundef nonnull align 4 dereferenceable(4) %66)
  %68 = load i32, ptr %67, align 4, !tbaa !5
  %69 = load i32, ptr %4, align 4, !tbaa !5
  %70 = sext i32 %69 to i64
  %71 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %70
  store i32 %68, ptr %71, align 4, !tbaa !5
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  %72 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br i1 %72, label %._crit_edge8, label %.lr.ph7, !llvm.loop !14

._crit_edge8:                                     ; preds = %59, %.lr.ph7, %.lr.ph12
  %73 = call noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br i1 %73, label %76, label %74

74:                                               ; preds = %._crit_edge8
  %75 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) @s)
  br label %76

76:                                               ; preds = %._crit_edge8, %74
  %.sink.in = phi ptr [ %75, %74 ], [ @n, %._crit_edge8 ]
  %.sink = load i32, ptr %.sink.in, align 4, !tbaa !5
  %.sink22 = load i32, ptr %4, align 4, !tbaa !5
  %77 = sext i32 %.sink22 to i64
  %78 = getelementptr inbounds [262144 x i32], ptr @u, i64 0, i64 %77
  store i32 %.sink, ptr %78, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #6
  %79 = getelementptr inbounds [262144 x i32], ptr @r, i64 0, i64 %77
  %80 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %79)
  store i64 %80, ptr %5, align 8
  call void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @s, ptr noundef nonnull align 4 dereferenceable(8) %5)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #6
  %81 = load i32, ptr %4, align 4, !tbaa !5
  %82 = add nsw i32 %81, -1
  store i32 %82, ptr %4, align 4, !tbaa !5
  %83 = icmp sgt i32 %81, 0
  br i1 %83, label %.lr.ph12, label %._crit_edge13, !llvm.loop !15

.lr.ph16:                                         ; preds = %._crit_edge13, %.lr.ph16
  %84 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.4, ptr noundef nonnull @x, ptr noundef nonnull @y)
  %85 = load i32, ptr @x, align 4, !tbaa !5
  %86 = add nsw i32 %85, -1
  store i32 %86, ptr @x, align 4, !tbaa !5
  %87 = load i32, ptr @y, align 4, !tbaa !5
  %88 = add nsw i32 %87, -1
  store i32 %88, ptr @y, align 4, !tbaa !5
  call void @_Z5queryv()
  %89 = load i32, ptr @q, align 4, !tbaa !5
  %90 = add nsw i32 %89, -1
  store i32 %90, ptr @q, align 4, !tbaa !5
  %.not = icmp eq i32 %89, 0
  br i1 %.not, label %._crit_edge17, label %.lr.ph16, !llvm.loop !16

._crit_edge17:                                    ; preds = %.lr.ph16, %._crit_edge13
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE4pushEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIiRiESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #5

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackISt4pairIiiESt5dequeIS1_SaIS1_EEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { 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 #5 = { 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 #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, !6, i64 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}
!15 = distinct !{!15, !13}
!16 = distinct !{!16, !13}


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