; LLVM IR from DionysiosB/CodeForces :: 0300-0399 (399A-Pages)

; 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 [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %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) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3, ptr noundef %4)
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sub nsw i32 %7, %8
  %10 = icmp sgt i32 %9, 1
  br i1 %10, label %11, label %13

11:                                               ; preds = %0
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %13

13:                                               ; preds = %11, %0
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sub nsw i32 %14, %15
  store i32 %16, ptr %5, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %43, %13
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = add nsw i32 %19, %20
  %22 = icmp sle i32 %18, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %46

24:                                               ; preds = %17
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = load i32, ptr %3, align 4, !tbaa !5
  %27 = icmp eq i32 %25, %26
  br i1 %27, label %28, label %31

28:                                               ; preds = %24
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %29)
  br label %42

31:                                               ; preds = %24
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = icmp sle i32 1, %32
  br i1 %33, label %34, label %41

34:                                               ; preds = %31
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = load i32, ptr %2, align 4, !tbaa !5
  %37 = icmp sle i32 %35, %36
  br i1 %37, label %38, label %41

38:                                               ; preds = %34
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %39)
  br label %41

41:                                               ; preds = %38, %34, %31
  br label %42

42:                                               ; preds = %41, %28
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %5, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %5, align 4, !tbaa !5
  br label %17, !llvm.loop !9

46:                                               ; preds = %23
  %47 = load i32, ptr %3, align 4, !tbaa !5
  %48 = load i32, ptr %4, align 4, !tbaa !5
  %49 = add nsw i32 %47, %48
  %50 = load i32, ptr %2, align 4, !tbaa !5
  %51 = icmp slt i32 %49, %50
  br i1 %51, label %52, label %54

52:                                               ; preds = %46
  %53 = call i32 (ptr, ...) @printf(ptr noundef @.str.4)
  br label %54

54:                                               ; preds = %52, %46
  %55 = call i32 @puts(ptr noundef @.str.5)
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

; 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

declare i32 @printf(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; 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 [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %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) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = sub nsw i32 %5, %6
  %8 = icmp sgt i32 %7, 1
  br i1 %8, label %9, label %11

9:                                                ; preds = %0
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %.pre = load i32, ptr %2, align 4, !tbaa !5
  %.pre12 = load i32, ptr %3, align 4, !tbaa !5
  %.pre13 = sub nsw i32 %.pre, %.pre12
  br label %11

11:                                               ; preds = %9, %0
  %.pre-phi = phi i32 [ %.pre13, %9 ], [ %7, %0 ]
  %12 = phi i32 [ %.pre12, %9 ], [ %6, %0 ]
  %13 = phi i32 [ %.pre, %9 ], [ %5, %0 ]
  %14 = add nsw i32 %12, %13
  %.not9 = icmp sgt i32 %.pre-phi, %14
  br i1 %.not9, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %26, %11
  %.lcssa = phi i32 [ %14, %11 ], [ %30, %26 ]
  %15 = load i32, ptr %1, align 4, !tbaa !5
  %16 = icmp slt i32 %.lcssa, %15
  br i1 %16, label %31, label %33

.lr.ph:                                           ; preds = %11, %26
  %17 = phi i32 [ %28, %26 ], [ %13, %11 ]
  %.010 = phi i32 [ %27, %26 ], [ %.pre-phi, %11 ]
  %18 = icmp eq i32 %.010, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %.lr.ph
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %17)
  br label %26

21:                                               ; preds = %.lr.ph
  %22 = icmp slt i32 %.010, 1
  %23 = load i32, ptr %1, align 4
  %.not8 = icmp sgt i32 %.010, %23
  %or.cond = select i1 %22, i1 true, i1 %.not8
  br i1 %or.cond, label %26, label %24

24:                                               ; preds = %21
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %.010)
  br label %26

26:                                               ; preds = %19, %24, %21
  %27 = add nsw i32 %.010, 1
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = add nsw i32 %29, %28
  %.not.not = icmp slt i32 %.010, %30
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

31:                                               ; preds = %._crit_edge
  %32 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4)
  br label %33

33:                                               ; preds = %31, %._crit_edge
  %34 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.5)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, 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: nofree nounwind
declare noundef i32 @printf(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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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