; LLVM IR from tangjz/acm-icpc :: buaa/oj3rd (1203)

; 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
@a = external dso_local global [1000010 x i32], align 16
@id = external dso_local global [1000010 x i32], align 16
@fa = external dso_local global [1000010 x i32], align 16
@ans = external dso_local global [1000010 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z4findi(i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z3cmpRKiS0_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  br label %5

5:                                                ; preds = %86, %0
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  %7 = icmp eq i32 %6, 1
  br i1 %7, label %8, label %87

8:                                                ; preds = %5
  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 = %27, %8
  %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 %30

14:                                               ; preds = %9
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i32, ptr @a, i64 %16
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %17)
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %21
  store i32 %19, ptr %22, align 4, !tbaa !5
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %25
  store i32 %23, ptr %26, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %14
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !9

30:                                               ; preds = %13
  %31 = load i32, ptr @n, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr @id, i64 %32
  call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef @id, ptr noundef %33, ptr noundef @_Z3cmpRKiS0_)
  %34 = load i32, ptr @n, align 4, !tbaa !5
  %35 = load i32, ptr @n, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %36
  store i32 %34, ptr %37, align 4, !tbaa !5
  %38 = load i32, ptr @n, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds [1000010 x i32], ptr @a, i64 0, i64 %39
  store i32 -1, ptr %40, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %41

41:                                               ; preds = %65, %30
  %42 = load i32, ptr %3, align 4, !tbaa !5
  %43 = load i32, ptr @n, align 4, !tbaa !5
  %44 = icmp slt i32 %42, %43
  br i1 %44, label %46, label %45

45:                                               ; preds = %41
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %68

46:                                               ; preds = %41
  %47 = load i32, ptr %3, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %48
  %50 = load i32, ptr %49, align 4, !tbaa !5
  %51 = add nsw i32 %50, 1
  %52 = call noundef i32 @_Z4findi(i32 noundef %51)
  %53 = load i32, ptr %3, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %54
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %57
  store i32 %52, ptr %58, align 4, !tbaa !5
  %59 = load i32, ptr %3, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %60
  %62 = load i32, ptr %61, align 4, !tbaa !5
  %63 = sext i32 %62 to i64
  %64 = getelementptr inbounds [1000010 x i32], ptr @ans, i64 0, i64 %63
  store i32 %52, ptr %64, align 4, !tbaa !5
  br label %65

65:                                               ; preds = %46
  %66 = load i32, ptr %3, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %3, align 4, !tbaa !5
  br label %41, !llvm.loop !11

68:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %69

69:                                               ; preds = %83, %68
  %70 = load i32, ptr %4, align 4, !tbaa !5
  %71 = load i32, ptr @n, align 4, !tbaa !5
  %72 = icmp slt i32 %70, %71
  br i1 %72, label %74, label %73

73:                                               ; preds = %69
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %86

74:                                               ; preds = %69
  %75 = load i32, ptr %4, align 4, !tbaa !5
  %76 = sext i32 %75 to i64
  %77 = getelementptr inbounds [1000010 x i32], ptr @ans, i64 0, i64 %76
  %78 = load i32, ptr %77, align 4, !tbaa !5
  %79 = sext i32 %78 to i64
  %80 = getelementptr inbounds [1000010 x i32], ptr @a, i64 0, i64 %79
  %81 = load i32, ptr %80, align 4, !tbaa !5
  %82 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %81)
  br label %83

83:                                               ; preds = %74
  %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 %69, !llvm.loop !12

86:                                               ; preds = %73
  br label %5, !llvm.loop !13

87:                                               ; preds = %5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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, ...) #3

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 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 #2 = { 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 #3 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !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
@a = external dso_local global [1000010 x i32], align 16
@id = external dso_local global [1000010 x i32], align 16
@fa = external dso_local local_unnamed_addr global [1000010 x i32], align 16
@ans = external dso_local local_unnamed_addr global [1000010 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z4findi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z3cmpRKiS0_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %2 = icmp eq i32 %1, 1
  br i1 %2, label %.preheader18, label %._crit_edge25

.loopexit:                                        ; preds = %.lr.ph24, %._crit_edge, %.preheader
  %3 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %.preheader18, label %._crit_edge25, !llvm.loop !5

.preheader18:                                     ; preds = %0, %.loopexit
  %5 = load i32, ptr @n, align 4, !tbaa !7
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %.preheader18.._crit_edge_crit_edge

.preheader18.._crit_edge_crit_edge:               ; preds = %.preheader18
  %.pre = sext i32 %5 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader18.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.preheader18.._crit_edge_crit_edge ], [ %19, %.lr.ph ]
  %7 = getelementptr inbounds i32, ptr @id, i64 %.pre-phi
  tail call void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef nonnull @id, ptr noundef nonnull %7, ptr noundef nonnull @_Z3cmpRKiS0_)
  %8 = load i32, ptr @n, align 4, !tbaa !7
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %9
  store i32 %8, ptr %10, align 4, !tbaa !7
  %11 = getelementptr inbounds [1000010 x i32], ptr @a, i64 0, i64 %9
  store i32 -1, ptr %11, align 4, !tbaa !7
  %12 = icmp sgt i32 %8, 0
  br i1 %12, label %.lr.ph22, label %.loopexit

.lr.ph:                                           ; preds = %.preheader18, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader18 ]
  %13 = getelementptr inbounds i32, ptr @a, i64 %indvars.iv
  %14 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %13)
  %15 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %indvars.iv
  %16 = trunc nuw nsw i64 %indvars.iv to i32
  store i32 %16, ptr %15, align 4, !tbaa !7
  %17 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %indvars.iv
  store i32 %16, ptr %17, align 4, !tbaa !7
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = load i32, ptr @n, align 4, !tbaa !7
  %19 = sext i32 %18 to i64
  %20 = icmp slt i64 %indvars.iv.next, %19
  br i1 %20, label %.lr.ph, label %._crit_edge, !llvm.loop !11

.preheader:                                       ; preds = %.lr.ph22
  %21 = icmp sgt i32 %30, 0
  br i1 %21, label %.lr.ph24, label %.loopexit

.lr.ph22:                                         ; preds = %._crit_edge, %.lr.ph22
  %indvars.iv28 = phi i64 [ %indvars.iv.next29, %.lr.ph22 ], [ 0, %._crit_edge ]
  %22 = getelementptr inbounds [1000010 x i32], ptr @id, i64 0, i64 %indvars.iv28
  %23 = load i32, ptr %22, align 4, !tbaa !7
  %24 = add nsw i32 %23, 1
  %25 = tail call noundef i32 @_Z4findi(i32 noundef %24)
  %26 = load i32, ptr %22, align 4, !tbaa !7
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [1000010 x i32], ptr @fa, i64 0, i64 %27
  store i32 %25, ptr %28, align 4, !tbaa !7
  %29 = getelementptr inbounds [1000010 x i32], ptr @ans, i64 0, i64 %27
  store i32 %25, ptr %29, align 4, !tbaa !7
  %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
  %30 = load i32, ptr @n, align 4, !tbaa !7
  %31 = sext i32 %30 to i64
  %32 = icmp slt i64 %indvars.iv.next29, %31
  br i1 %32, label %.lr.ph22, label %.preheader, !llvm.loop !12

.lr.ph24:                                         ; preds = %.preheader, %.lr.ph24
  %indvars.iv31 = phi i64 [ %indvars.iv.next32, %.lr.ph24 ], [ 0, %.preheader ]
  %33 = getelementptr inbounds [1000010 x i32], ptr @ans, i64 0, i64 %indvars.iv31
  %34 = load i32, ptr %33, align 4, !tbaa !7
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [1000010 x i32], ptr @a, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !7
  %38 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %37)
  %indvars.iv.next32 = add nuw nsw i64 %indvars.iv31, 1
  %39 = load i32, ptr @n, align 4, !tbaa !7
  %40 = sext i32 %39 to i64
  %41 = icmp slt i64 %indvars.iv.next32, %40
  br i1 %41, label %.lr.ph24, label %.loopexit, !llvm.loop !13

._crit_edge25:                                    ; preds = %.loopexit, %0
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZSt4sortIPiPFbRKiS2_EEvT_S5_T0_(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #4

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

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 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 #2 = { 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 #3 = { 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 #4 = { 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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = distinct !{!11, !6}
!12 = distinct !{!12, !6}
!13 = distinct !{!13, !6}


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