; LLVM IR from DionysiosB/CodeForces :: 1890A-DoremysPaint3 (main)

; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i8, align 1
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %12

12:                                               ; preds = %67, %0
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = add nsw i64 %13, -1
  store i64 %14, ptr %2, align 8, !tbaa !5
  %15 = icmp ne i64 %13, 0
  br i1 %15, label %16, label %73

16:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  store i8 1, ptr %4, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 1, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  store i64 0, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  store i64 1, ptr %9, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %48, %16
  %20 = load i64, ptr %9, align 8, !tbaa !5
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %51

24:                                               ; preds = %19
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %25 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %10)
  %26 = load i64, ptr %10, align 8, !tbaa !5
  %27 = load i64, ptr %5, align 8, !tbaa !5
  %28 = icmp eq i64 %26, %27
  br i1 %28, label %29, label %32

29:                                               ; preds = %24
  %30 = load i64, ptr %6, align 8, !tbaa !5
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %6, align 8, !tbaa !5
  br label %47

32:                                               ; preds = %24
  %33 = load i64, ptr %8, align 8, !tbaa !5
  %34 = icmp eq i64 %33, 0
  br i1 %34, label %35, label %37

35:                                               ; preds = %32
  %36 = load i64, ptr %10, align 8, !tbaa !5
  store i64 %36, ptr %7, align 8, !tbaa !5
  store i64 1, ptr %8, align 8, !tbaa !5
  br label %46

37:                                               ; preds = %32
  %38 = load i64, ptr %10, align 8, !tbaa !5
  %39 = load i64, ptr %7, align 8, !tbaa !5
  %40 = icmp eq i64 %38, %39
  br i1 %40, label %41, label %44

41:                                               ; preds = %37
  %42 = load i64, ptr %8, align 8, !tbaa !5
  %43 = add nsw i64 %42, 1
  store i64 %43, ptr %8, align 8, !tbaa !5
  br label %45

44:                                               ; preds = %37
  store i8 0, ptr %4, align 1, !tbaa !9
  br label %45

45:                                               ; preds = %44, %41
  br label %46

46:                                               ; preds = %45, %35
  br label %47

47:                                               ; preds = %46, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %48

48:                                               ; preds = %47
  %49 = load i64, ptr %9, align 8, !tbaa !5
  %50 = add nsw i64 %49, 1
  store i64 %50, ptr %9, align 8, !tbaa !5
  br label %19, !llvm.loop !11

51:                                               ; preds = %23
  %52 = load i64, ptr %8, align 8, !tbaa !5
  %53 = icmp sgt i64 %52, 0
  br i1 %53, label %54, label %67

54:                                               ; preds = %51
  %55 = load i64, ptr %6, align 8, !tbaa !5
  %56 = load i64, ptr %8, align 8, !tbaa !5
  %57 = add nsw i64 %56, 1
  %58 = icmp sgt i64 %55, %57
  br i1 %58, label %59, label %60

59:                                               ; preds = %54
  store i8 0, ptr %4, align 1, !tbaa !9
  br label %60

60:                                               ; preds = %59, %54
  %61 = load i64, ptr %8, align 8, !tbaa !5
  %62 = load i64, ptr %6, align 8, !tbaa !5
  %63 = add nsw i64 %62, 1
  %64 = icmp sgt i64 %61, %63
  br i1 %64, label %65, label %66

65:                                               ; preds = %60
  store i8 0, ptr %4, align 1, !tbaa !9
  br label %66

66:                                               ; preds = %65, %60
  br label %67

67:                                               ; preds = %66, %51
  %68 = load i8, ptr %4, align 1, !tbaa !9, !range !13, !noundef !14
  %69 = trunc i8 %68 to i1
  %70 = zext i1 %69 to i64
  %71 = select i1 %69, ptr @.str.1, ptr @.str.2
  %72 = call i32 @puts(ptr noundef %71)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %12, !llvm.loop !15

73:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %74 = load i32, ptr %1, align 4
  ret i32 %74
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

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

declare i32 @puts(ptr noundef) #2

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !12}


; 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not31 = icmp eq i64 %6, 0
  br i1 %.not31, label %._crit_edge34, label %.lr.ph33

.lr.ph33:                                         ; preds = %0, %34
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = icmp sgt i64 %10, 1
  br i1 %11, label %.lr.ph, label %.thread

._crit_edge:                                      ; preds = %24
  %12 = icmp sgt i64 %.1, 0
  br i1 %12, label %28, label %33

.lr.ph:                                           ; preds = %.lr.ph33, %24
  %.028 = phi i64 [ %25, %24 ], [ 1, %.lr.ph33 ]
  %.01327 = phi i64 [ %.1, %24 ], [ 0, %.lr.ph33 ]
  %.01426 = phi i64 [ %.115, %24 ], [ 0, %.lr.ph33 ]
  %.01625 = phi i64 [ %.117, %24 ], [ 1, %.lr.ph33 ]
  %.01824 = phi i1 [ %cond.fr, %24 ], [ true, %.lr.ph33 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = icmp eq i64 %14, %15
  br i1 %16, label %17, label %19

17:                                               ; preds = %.lr.ph
  %18 = add nsw i64 %.01625, 1
  br label %24

19:                                               ; preds = %.lr.ph
  %20 = icmp eq i64 %.01327, 0
  br i1 %20, label %24, label %21

21:                                               ; preds = %19
  %22 = icmp eq i64 %14, %.01426
  %spec.select21 = and i1 %22, %.01824
  %23 = zext i1 %22 to i64
  %spec.select22 = add nsw i64 %.01327, %23
  br label %24

24:                                               ; preds = %21, %19, %17
  %.119 = phi i1 [ %.01824, %17 ], [ %.01824, %19 ], [ %spec.select21, %21 ]
  %.117 = phi i64 [ %18, %17 ], [ %.01625, %19 ], [ %.01625, %21 ]
  %.115 = phi i64 [ %.01426, %17 ], [ %14, %19 ], [ %.01426, %21 ]
  %.1 = phi i64 [ %.01327, %17 ], [ 1, %19 ], [ %spec.select22, %21 ]
  %cond.fr = freeze i1 %.119
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  %25 = add nuw nsw i64 %.028, 1
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = icmp slt i64 %25, %26
  br i1 %27, label %.lr.ph, label %._crit_edge, !llvm.loop !9

28:                                               ; preds = %._crit_edge
  %29 = add nuw nsw i64 %.1, 1
  %30 = icmp sle i64 %.117, %29
  %31 = add nsw i64 %.117, 1
  %32 = icmp sle i64 %.1, %31
  %.not37 = select i1 %32, i1 %30, i1 false
  %.not37.fr = freeze i1 %.not37
  %spec.select23 = and i1 %.not37.fr, %cond.fr
  br i1 %spec.select23, label %.thread, label %34

33:                                               ; preds = %._crit_edge
  br i1 %cond.fr, label %.thread, label %34

.thread:                                          ; preds = %.lr.ph33, %28, %33
  br label %34

34:                                               ; preds = %28, %33, %.thread
  %35 = phi ptr [ @.str.1, %.thread ], [ @.str.2, %33 ], [ @.str.2, %28 ]
  %36 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %35)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %37 = load i64, ptr %1, align 8, !tbaa !5
  %38 = add nsw i64 %37, -1
  store i64 %38, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %37, 0
  br i1 %.not, label %._crit_edge34, label %.lr.ph33, !llvm.loop !11

._crit_edge34:                                    ; preds = %34, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #2

attributes #0 = { mustprogress nofree norecurse 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 = { 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 #3 = { 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 = !{!"long", !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: AggressiveInstCombinePass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass