; LLVM IR from tangjz/acm-icpc :: codeforces/gym (100959B)

; 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"

@n = external dso_local global i32, align 4
@x = external dso_local global [100001 x i32], align 16
@y = external dso_local global [100001 x i32], align 16
@ordx = external dso_local global [100001 x i32], align 16
@ordy = external dso_local global [100001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checki(i32 noundef) #0

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

; 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 zeroext i1 @_Z4cmpxRKiS0_(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 @_Z4cmpyRKiS0_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #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 i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %35, %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 %38

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = add nsw i32 %16, %17
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100001 x i32], ptr @x, i64 0, i64 %20
  store i32 %18, ptr %21, align 4, !tbaa !5
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = sub nsw i32 %22, %23
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [100001 x i32], ptr @y, i64 0, i64 %26
  store i32 %24, ptr %27, align 4, !tbaa !5
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [100001 x i32], ptr @ordy, i64 0, i64 %30
  store i32 %28, ptr %31, align 4, !tbaa !5
  %32 = load i32, ptr %2, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [100001 x i32], ptr @ordx, i64 0, i64 %33
  store i32 %28, ptr %34, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %35

35:                                               ; preds = %14
  %36 = load i32, ptr %2, align 4, !tbaa !5
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !9

38:                                               ; preds = %13
  %39 = load i32, ptr @n, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds i32, ptr @ordx, i64 %40
  call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef @ordx, ptr noundef %41, ptr noundef @_Z4cmpxRKiS0_)
  %42 = load i32, ptr @n, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds i32, ptr @ordy, i64 %43
  call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef @ordy, ptr noundef %44, ptr noundef @_Z4cmpyRKiS0_)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  store i32 2000000001, ptr %6, align 4, !tbaa !5
  br label %45

45:                                               ; preds = %63, %38
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = icmp slt i32 %46, %47
  br i1 %48, label %49, label %64

49:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = load i32, ptr %6, align 4, !tbaa !5
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = sub nsw i32 %51, %52
  %54 = ashr i32 %53, 1
  %55 = sub nsw i32 %50, %54
  store i32 %55, ptr %7, align 4, !tbaa !5
  %56 = load i32, ptr %7, align 4, !tbaa !5
  %57 = call noundef zeroext i1 @_Z5checki(i32 noundef %56)
  br i1 %57, label %58, label %60

58:                                               ; preds = %49
  %59 = load i32, ptr %7, align 4, !tbaa !5
  store i32 %59, ptr %5, align 4, !tbaa !5
  br label %63

60:                                               ; preds = %49
  %61 = load i32, ptr %7, align 4, !tbaa !5
  %62 = sub nsw i32 %61, 1
  store i32 %62, ptr %6, align 4, !tbaa !5
  br label %63

63:                                               ; preds = %60, %58
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  br label %45, !llvm.loop !11

64:                                               ; preds = %45
  %65 = load i32, ptr %5, align 4, !tbaa !5
  %66 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %65)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  ret i32 0
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef, ptr noundef, ptr noundef) #5

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 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 = distinct !{!11, !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"

@n = external dso_local global i32, align 4
@x = external dso_local local_unnamed_addr global [100001 x i32], align 16
@y = external dso_local local_unnamed_addr global [100001 x i32], align 16
@ordx = external dso_local global [100001 x i32], align 16
@ordy = external dso_local global [100001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checki(i32 noundef) 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 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 zeroext i1 @_Z4cmpxRKiS0_(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 @_Z4cmpyRKiS0_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

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

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = sext i32 %4 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %21, %.lr.ph ]
  %6 = getelementptr inbounds i32, ptr @ordx, i64 %.pre-phi
  call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef nonnull @ordx, ptr noundef nonnull %6, ptr noundef nonnull @_Z4cmpxRKiS0_)
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds i32, ptr @ordy, i64 %8
  call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef nonnull @ordy, ptr noundef nonnull %9, ptr noundef nonnull @_Z4cmpyRKiS0_)
  br label %23

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = add nsw i32 %12, %11
  %14 = getelementptr inbounds [100001 x i32], ptr @x, i64 0, i64 %indvars.iv
  store i32 %13, ptr %14, align 4, !tbaa !5
  %15 = sub nsw i32 %11, %12
  %16 = getelementptr inbounds [100001 x i32], ptr @y, i64 0, i64 %indvars.iv
  store i32 %15, ptr %16, align 4, !tbaa !5
  %17 = getelementptr inbounds [100001 x i32], ptr @ordy, i64 0, i64 %indvars.iv
  %18 = trunc nuw nsw i64 %indvars.iv to i32
  store i32 %18, ptr %17, align 4, !tbaa !5
  %19 = getelementptr inbounds [100001 x i32], ptr @ordx, i64 0, i64 %indvars.iv
  store i32 %18, ptr %19, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %20 = load i32, ptr @n, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = icmp slt i64 %indvars.iv.next, %21
  br i1 %22, label %.lr.ph, label %._crit_edge, !llvm.loop !9

23:                                               ; preds = %._crit_edge, %23
  %.01622 = phi i32 [ 2000000001, %._crit_edge ], [ %.1, %23 ]
  %.01721 = phi i32 [ 0, %._crit_edge ], [ %.118, %23 ]
  %24 = sub nsw i32 %.01622, %.01721
  %25 = ashr i32 %24, 1
  %26 = sub nsw i32 %.01622, %25
  %27 = call noundef zeroext i1 @_Z5checki(i32 noundef %26)
  %28 = add nsw i32 %26, -1
  %.118 = select i1 %27, i32 %26, i32 %.01721
  %.1 = select i1 %27, i32 %.01622, i32 %28
  %29 = icmp slt i32 %.118, %.1
  br i1 %29, label %23, label %30, !llvm.loop !11

30:                                               ; preds = %23
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.118)
  ret i32 0
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #5

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

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 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 = distinct !{!11, !10}


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