; LLVM IR from brpapa/algorithms :: solutions/uva (11833)

; 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<Tadj, std::allocator<Tadj>>::_Vector_impl" }
%"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl" = type { %"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@adjList = external dso_local global [250 x %"class.std::vector"], align 16
@c = external dso_local global [250 x i32], align 16
@R = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z10insertEdgeiii(i32 noundef, i32 noundef, 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 uwtable
declare dso_local void @_Z8dijkstrai(i32 noundef) #0

; 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
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  br label %9

9:                                                ; preds = %49, %0
  br label %10

10:                                               ; preds = %9
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3, ptr noundef @R, ptr noundef %4)
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %14, label %24

14:                                               ; preds = %10
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %24

17:                                               ; preds = %14
  %18 = load i32, ptr @R, align 4, !tbaa !5
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %24

20:                                               ; preds = %17
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %24

23:                                               ; preds = %20
  br label %57

24:                                               ; preds = %20, %17, %14, %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %36, %24
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = icmp slt i32 %26, 250
  br i1 %27, label %29, label %28

28:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %39

29:                                               ; preds = %25
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [250 x %"class.std::vector"], ptr @adjList, i64 0, i64 %31
  call void @_ZNSt6vectorI4TadjSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %32) #5
  %33 = load i32, ptr %5, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [250 x i32], ptr @c, i64 0, i64 %34
  store i32 1073741824, ptr %35, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %29
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %5, align 4, !tbaa !5
  br label %25, !llvm.loop !9

39:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  br label %40

40:                                               ; preds = %44, %39
  %41 = load i32, ptr %3, align 4, !tbaa !5
  %42 = add nsw i32 %41, -1
  store i32 %42, ptr %3, align 4, !tbaa !5
  %43 = icmp ne i32 %41, 0
  br i1 %43, label %44, label %49

44:                                               ; preds = %40
  %45 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %6, ptr noundef %7, ptr noundef %8)
  %46 = load i32, ptr %6, align 4, !tbaa !5
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = load i32, ptr %8, align 4, !tbaa !5
  call void @_Z10insertEdgeiii(i32 noundef %46, i32 noundef %47, i32 noundef %48)
  br label %40, !llvm.loop !11

49:                                               ; preds = %40
  %50 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z8dijkstrai(i32 noundef %50)
  %51 = load i32, ptr @R, align 4, !tbaa !5
  %52 = sub nsw i32 %51, 1
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [250 x i32], ptr @c, i64 0, i64 %53
  %55 = load i32, ptr %54, align 4, !tbaa !5
  %56 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %55)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %9, !llvm.loop !12

57:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  ret i32 0
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorI4TadjSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #4 align 2

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #5 = { 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}


; 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<Tadj, std::allocator<Tadj>>::_Vector_impl" }
%"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl" = type { %"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl_data" }
%"struct.std::_Vector_base<Tadj, std::allocator<Tadj>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@adjList = external dso_local global [250 x %"class.std::vector"], align 16
@c = external dso_local local_unnamed_addr global [250 x i32], align 16
@R = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z10insertEdgeiii(i32 noundef, i32 noundef, 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 uwtable
declare dso_local void @_Z8dijkstrai(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %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
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull @R, ptr noundef nonnull %3)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = icmp eq i32 %8, 0
  %10 = load i32, ptr %2, align 4
  %11 = icmp eq i32 %10, 0
  %or.cond11 = select i1 %9, i1 %11, i1 false
  %12 = load i32, ptr @R, align 4
  %13 = icmp eq i32 %12, 0
  %or.cond312 = select i1 %or.cond11, i1 %13, i1 false
  %14 = load i32, ptr %3, align 4
  %15 = icmp eq i32 %14, 0
  %or.cond513 = select i1 %or.cond312, i1 %15, i1 false
  br i1 %or.cond513, label %._crit_edge14, label %.preheader

16:                                               ; preds = %.preheader
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #5
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = add nsw i32 %17, -1
  store i32 %18, ptr %2, align 4, !tbaa !5
  %.not10 = icmp eq i32 %17, 0
  br i1 %.not10, label %._crit_edge, label %.lr.ph

.preheader:                                       ; preds = %0, %.preheader.backedge
  %indvars.iv = phi i64 [ %indvars.iv.be, %.preheader.backedge ], [ 0, %0 ]
  %19 = getelementptr inbounds [250 x %"class.std::vector"], ptr @adjList, i64 0, i64 %indvars.iv
  call void @_ZNSt6vectorI4TadjSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %19) #5
  %20 = getelementptr inbounds [250 x i32], ptr @c, i64 0, i64 %indvars.iv
  store i32 1073741824, ptr %20, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, 250
  br i1 %exitcond.not, label %16, label %.preheader.backedge

.preheader.backedge:                              ; preds = %.preheader, %._crit_edge
  %indvars.iv.be = phi i64 [ %indvars.iv.next, %.preheader ], [ 0, %._crit_edge ]
  br label %.preheader, !llvm.loop !9

.lr.ph:                                           ; preds = %16, %.lr.ph
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %4, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z10insertEdgeiii(i32 noundef %22, i32 noundef %23, i32 noundef %24)
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = add nsw i32 %25, -1
  store i32 %26, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %25, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %16
  %27 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z8dijkstrai(i32 noundef %27)
  %28 = load i32, ptr @R, align 4, !tbaa !5
  %29 = add nsw i32 %28, -1
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [250 x i32], ptr @c, i64 0, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %32)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #5
  %34 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull @R, ptr noundef nonnull %3)
  %35 = load i32, ptr %1, align 4, !tbaa !5
  %36 = icmp eq i32 %35, 0
  %37 = load i32, ptr %2, align 4
  %38 = icmp eq i32 %37, 0
  %or.cond = select i1 %36, i1 %38, i1 false
  %39 = load i32, ptr @R, align 4
  %40 = icmp eq i32 %39, 0
  %or.cond3 = select i1 %or.cond, i1 %40, i1 false
  %41 = load i32, ptr %3, align 4
  %42 = icmp eq i32 %41, 0
  %or.cond5 = select i1 %or.cond3, i1 %42, i1 false
  br i1 %or.cond5, label %._crit_edge14, label %.preheader.backedge

._crit_edge14:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #5
  ret i32 0
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorI4TadjSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #4 align 2

; 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #5 = { 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: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass