; LLVM IR from DionysiosB/CodeForces :: 0900-0999 (922B-MagicForest)

; 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 [5 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 i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 1, ptr %4, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %52, %0
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp sle i64 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %55

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = add nsw i64 %15, 1
  store i64 %16, ptr %6, align 8, !tbaa !5
  br label %17

17:                                               ; preds = %48, %14
  %18 = load i64, ptr %6, align 8, !tbaa !5
  %19 = load i64, ptr %2, align 8, !tbaa !5
  %20 = icmp sle i64 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  store i32 5, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %51

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = load i64, ptr %6, align 8, !tbaa !5
  %25 = xor i64 %23, %24
  store i64 %25, ptr %7, align 8, !tbaa !5
  %26 = load i64, ptr %7, align 8, !tbaa !5
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = icmp sgt i64 %26, %27
  br i1 %28, label %29, label %43

29:                                               ; preds = %22
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = load i64, ptr %6, align 8, !tbaa !5
  %32 = icmp sgt i64 %30, %31
  br i1 %32, label %33, label %43

33:                                               ; preds = %29
  %34 = load i64, ptr %7, align 8, !tbaa !5
  %35 = load i64, ptr %4, align 8, !tbaa !5
  %36 = load i64, ptr %6, align 8, !tbaa !5
  %37 = add nsw i64 %35, %36
  %38 = icmp slt i64 %34, %37
  br i1 %38, label %39, label %43

39:                                               ; preds = %33
  %40 = load i64, ptr %7, align 8, !tbaa !5
  %41 = load i64, ptr %2, align 8, !tbaa !5
  %42 = icmp sle i64 %40, %41
  br label %43

43:                                               ; preds = %39, %33, %29, %22
  %44 = phi i1 [ false, %33 ], [ false, %29 ], [ false, %22 ], [ %42, %39 ]
  %45 = zext i1 %44 to i64
  %46 = load i64, ptr %3, align 8, !tbaa !5
  %47 = add nsw i64 %46, %45
  store i64 %47, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %48

48:                                               ; preds = %43
  %49 = load i64, ptr %6, align 8, !tbaa !5
  %50 = add nsw i64 %49, 1
  store i64 %50, ptr %6, align 8, !tbaa !5
  br label %17, !llvm.loop !9

51:                                               ; preds = %21
  br label %52

52:                                               ; preds = %51
  %53 = load i64, ptr %4, align 8, !tbaa !5
  %54 = add nsw i64 %53, 1
  store i64 %54, ptr %4, align 8, !tbaa !5
  br label %9, !llvm.loop !11

55:                                               ; preds = %13
  %56 = load i64, ptr %3, align 8, !tbaa !5
  %57 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %56)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %58 = load i32, ptr %1, align 4
  ret i32 %58
}

; 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 @printf(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 = 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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = load i64, ptr %1, align 8, !tbaa !5
  %.not28 = icmp slt i64 %3, 1
  br i1 %.not28, label %._crit_edge, label %.lr.ph31

.loopexit:                                        ; preds = %.lr.ph, %.lr.ph31
  %.1.lcssa = phi i64 [ %.01929, %.lr.ph31 ], [ %13, %.lr.ph ]
  %exitcond.not = icmp eq i64 %.01830, %3
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph31, !llvm.loop !9

._crit_edge:                                      ; preds = %.loopexit, %0
  %.019.lcssa = phi i64 [ 0, %0 ], [ %.1.lcssa, %.loopexit ]
  %4 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.019.lcssa)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0

.lr.ph31:                                         ; preds = %0, %.loopexit
  %.01830 = phi i64 [ %5, %.loopexit ], [ 1, %0 ]
  %.01929 = phi i64 [ %.1.lcssa, %.loopexit ], [ 0, %0 ]
  %5 = add nuw i64 %.01830, 1
  %.not2225.not = icmp slt i64 %.01830, %3
  br i1 %.not2225.not, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.lr.ph31, %.lr.ph
  %.027 = phi i64 [ %14, %.lr.ph ], [ %5, %.lr.ph31 ]
  %.126 = phi i64 [ %13, %.lr.ph ], [ %.01929, %.lr.ph31 ]
  %6 = xor i64 %.027, %.01830
  %7 = icmp ugt i64 %6, %.01830
  %8 = icmp ugt i64 %6, %.027
  %or.cond = and i1 %7, %8
  %9 = add nuw nsw i64 %.027, %.01830
  %10 = icmp ult i64 %6, %9
  %or.cond24 = select i1 %or.cond, i1 %10, i1 false
  %11 = icmp sle i64 %6, %3
  %spec.select = and i1 %11, %or.cond24
  %12 = zext i1 %spec.select to i64
  %13 = add nsw i64 %.126, %12
  %14 = add nuw nsw i64 %.027, 1
  %.not22.not = icmp slt i64 %.027, %3
  br i1 %.not22.not, label %.lr.ph, label %.loopexit, !llvm.loop !11
}

; 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 @printf(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: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass