; LLVM IR from DionysiosB/CodeForces :: 1600-1699 (1632B-RoofConstruction)

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

8:                                                ; preds = %58, %0
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %2, align 8, !tbaa !5
  %11 = icmp ne i64 %9, 0
  br i1 %11, label %12, label %60

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %23, %12
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = add nsw i64 %15, 1
  %17 = trunc i64 %16 to i32
  %18 = shl i32 1, %17
  %19 = sext i32 %18 to i64
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = sub nsw i64 %20, 1
  %22 = icmp sle i64 %19, %21
  br i1 %22, label %23, label %26

23:                                               ; preds = %14
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = add nsw i64 %24, 1
  store i64 %25, ptr %4, align 8, !tbaa !5
  br label %14, !llvm.loop !9

26:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %27 = load i64, ptr %4, align 8, !tbaa !5
  %28 = trunc i64 %27 to i32
  %29 = shl i32 1, %28
  %30 = sub nsw i32 %29, 1
  %31 = sext i32 %30 to i64
  store i64 %31, ptr %5, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %39, %26
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = icmp sge i64 %33, 0
  br i1 %34, label %36, label %35

35:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %42

36:                                               ; preds = %32
  %37 = load i64, ptr %5, align 8, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %37)
  br label %39

39:                                               ; preds = %36
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = add nsw i64 %40, -1
  store i64 %41, ptr %5, align 8, !tbaa !5
  br label %32, !llvm.loop !11

42:                                               ; preds = %35
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %43 = load i64, ptr %4, align 8, !tbaa !5
  %44 = trunc i64 %43 to i32
  %45 = shl i32 1, %44
  %46 = sext i32 %45 to i64
  store i64 %46, ptr %6, align 8, !tbaa !5
  br label %47

47:                                               ; preds = %55, %42
  %48 = load i64, ptr %6, align 8, !tbaa !5
  %49 = load i64, ptr %3, align 8, !tbaa !5
  %50 = icmp slt i64 %48, %49
  br i1 %50, label %52, label %51

51:                                               ; preds = %47
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %58

52:                                               ; preds = %47
  %53 = load i64, ptr %6, align 8, !tbaa !5
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %53)
  br label %55

55:                                               ; preds = %52
  %56 = load i64, ptr %6, align 8, !tbaa !5
  %57 = add nsw i64 %56, 1
  store i64 %57, ptr %6, align 8, !tbaa !5
  br label %47, !llvm.loop !12

58:                                               ; preds = %51
  %59 = call i32 @puts(ptr noundef @.str.2)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %8, !llvm.loop !13

60:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %61 = load i32, ptr %1, align 4
  ret i32 %61
}

; 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 = !{!"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}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !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
@.str.2 = 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 i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = add nsw i64 %4, -1
  store i64 %5, ptr %1, align 8, !tbaa !5
  %.not19 = icmp eq i64 %4, 0
  br i1 %.not19, label %._crit_edge22, label %.lr.ph21

.lr.ph21:                                         ; preds = %0, %._crit_edge18
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %7 = load i64, ptr %2, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %8, %.lr.ph21
  %.012 = phi i64 [ 0, %.lr.ph21 ], [ %9, %8 ]
  %9 = add nuw nsw i64 %.012, 1
  %10 = trunc i64 %9 to i32
  %11 = shl nuw i32 1, %10
  %12 = sext i32 %11 to i64
  %.not13.not = icmp sgt i64 %7, %12
  br i1 %.not13.not, label %8, label %13, !llvm.loop !9

13:                                               ; preds = %8
  %14 = trunc i64 %.012 to i32
  %15 = shl nuw i32 1, %14
  %.not23 = icmp eq i32 %14, 31
  br i1 %.not23, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %13
  %16 = add nsw i32 %15, -1
  %17 = sext i32 %16 to i64
  br label %.lr.ph

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %.pre = load i64, ptr %2, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %13
  %18 = phi i64 [ %.pre, %._crit_edge.loopexit ], [ %7, %13 ]
  %19 = sext i32 %15 to i64
  %20 = icmp sgt i64 %18, %19
  br i1 %20, label %.lr.ph17, label %._crit_edge18

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.01114 = phi i64 [ %22, %.lr.ph ], [ %17, %.lr.ph.preheader ]
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.01114)
  %22 = add nsw i64 %.01114, -1
  %23 = icmp sgt i64 %.01114, 0
  br i1 %23, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !11

._crit_edge18:                                    ; preds = %.lr.ph17, %._crit_edge
  %24 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %25 = load i64, ptr %1, align 8, !tbaa !5
  %26 = add nsw i64 %25, -1
  store i64 %26, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %25, 0
  br i1 %.not, label %._crit_edge22, label %.lr.ph21, !llvm.loop !12

.lr.ph17:                                         ; preds = %._crit_edge, %.lr.ph17
  %.015 = phi i64 [ %28, %.lr.ph17 ], [ %19, %._crit_edge ]
  %27 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %.015)
  %28 = add nsw i64 %.015, 1
  %29 = load i64, ptr %2, align 8, !tbaa !5
  %30 = icmp slt i64 %28, %29
  br i1 %30, label %.lr.ph17, label %._crit_edge18, !llvm.loop !13

._crit_edge22:                                    ; preds = %._crit_edge18, %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: 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 = !{!"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}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}


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