; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (4003 (2))

; 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"

@dp = external dso_local global [10005 x [15 x i32]], align 16
@head = external dso_local global [10005 x i32], align 16
@n = external dso_local global i32, align 4
@s = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@len = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7addedgeiii(i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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
  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
  br label %6

6:                                                ; preds = %26, %0
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @s, ptr noundef @k)
  %8 = xor i32 %7, -1
  %9 = icmp ne i32 %8, 0
  br i1 %9, label %10, label %36

10:                                               ; preds = %6
  store i32 0, ptr @len, align 4, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 16 @head, i8 -1, i64 40020, i1 false)
  call void @llvm.memset.p0.i64(ptr align 16 @dp, i8 0, i64 600300, i1 false)
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %23, %10
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = load i32, ptr @n, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %26

15:                                               ; preds = %11
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z7addedgeiii(i32 noundef %17, i32 noundef %18, i32 noundef %19)
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z7addedgeiii(i32 noundef %20, i32 noundef %21, i32 noundef %22)
  br label %23

23:                                               ; preds = %15
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %2, align 4, !tbaa !5
  br label %11, !llvm.loop !9

26:                                               ; preds = %11
  %27 = load i32, ptr @s, align 4, !tbaa !5
  call void @_Z3dfsii(i32 noundef %27, i32 noundef 0)
  %28 = load i32, ptr @s, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [10005 x [15 x i32]], ptr @dp, i64 0, i64 %29
  %31 = load i32, ptr @k, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [15 x i32], ptr %30, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %34)
  br label %6, !llvm.loop !11

36:                                               ; preds = %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
}

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

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

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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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"

@dp = external dso_local local_unnamed_addr global [10005 x [15 x i32]], align 16
@head = external dso_local local_unnamed_addr global [10005 x i32], align 16
@n = external dso_local global i32, align 4
@s = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@len = external dso_local local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [7 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7addedgeiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @s, ptr noundef nonnull @k)
  %.not3 = icmp eq i32 %4, -1
  br i1 %.not3, label %._crit_edge6, label %.lr.ph5

.lr.ph5:                                          ; preds = %0, %._crit_edge
  store i32 0, ptr @len, align 4, !tbaa !5
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(40020) @head, i8 -1, i64 40020, i1 false)
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(600300) @dp, i8 0, i64 600300, i1 false)
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 1
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph5, %.lr.ph
  %.02 = phi i32 [ %14, %.lr.ph ], [ 1, %.lr.ph5 ]
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7addedgeiii(i32 noundef %8, i32 noundef %9, i32 noundef %10)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z7addedgeiii(i32 noundef %11, i32 noundef %12, i32 noundef %13)
  %14 = add nuw nsw i32 %.02, 1
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph5
  %17 = load i32, ptr @s, align 4, !tbaa !5
  call void @_Z3dfsii(i32 noundef %17, i32 noundef 0)
  %18 = load i32, ptr @s, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = load i32, ptr @k, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [10005 x [15 x i32]], ptr @dp, i64 0, i64 %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %23)
  %25 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @s, ptr noundef nonnull @k)
  %.not = icmp eq i32 %25, -1
  br i1 %.not, label %._crit_edge6, label %.lr.ph5, !llvm.loop !11

._crit_edge6:                                     ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 4, 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
  ret i32 0
}

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

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #5

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

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 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass