; LLVM IR from DionysiosB/CodeForces :: 1000-1099 (1038B-NonCoprimePartition)

; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 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 i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %6 = load i64, ptr %2, align 8, !tbaa !5
  %7 = icmp sle i64 %6, 2
  br i1 %7, label %8, label %10

8:                                                ; preds = %0
  %9 = call i32 @puts(ptr noundef @.str.1)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %39

10:                                               ; preds = %0
  %11 = call i32 @puts(ptr noundef @.str.2)
  %12 = load i64, ptr %2, align 8, !tbaa !5
  %13 = add nsw i64 %12, 1
  %14 = sdiv i64 %13, 2
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %14)
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = sub nsw i64 %16, 1
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %17)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 1, ptr %4, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %34, %10
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = icmp sle i64 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %37

24:                                               ; preds = %19
  %25 = load i64, ptr %4, align 8, !tbaa !5
  %26 = load i64, ptr %2, align 8, !tbaa !5
  %27 = add nsw i64 %26, 1
  %28 = sdiv i64 %27, 2
  %29 = icmp eq i64 %25, %28
  br i1 %29, label %30, label %31

30:                                               ; preds = %24
  br label %34

31:                                               ; preds = %24
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i64 noundef %32)
  br label %34

34:                                               ; preds = %31, %30
  %35 = load i64, ptr %4, align 8, !tbaa !5
  %36 = add nsw i64 %35, 1
  store i64 %36, ptr %4, align 8, !tbaa !5
  br label %19, !llvm.loop !9

37:                                               ; preds = %23
  %38 = call i32 @puts(ptr noundef @.str.5)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  br label %39

39:                                               ; preds = %37, %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %40 = load i32, ptr %1, align 4
  ret i32 %40
}

; 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 @puts(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

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"}


; 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 [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [5 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 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
  %4 = icmp slt i64 %3, 3
  br i1 %4, label %._crit_edge, label %5

5:                                                ; preds = %0
  %6 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  %7 = load i64, ptr %1, align 8, !tbaa !5
  %8 = add nsw i64 %7, 1
  %9 = sdiv i64 %8, 2
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %9)
  %11 = load i64, ptr %1, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %12)
  %14 = load i64, ptr %1, align 8, !tbaa !5
  %.not7 = icmp slt i64 %14, 1
  br i1 %.not7, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5, %21
  %15 = phi i64 [ %22, %21 ], [ %14, %5 ]
  %.08 = phi i64 [ %23, %21 ], [ 1, %5 ]
  %16 = add nsw i64 %15, 1
  %17 = sdiv i64 %16, 2
  %18 = icmp eq i64 %.08, %17
  br i1 %18, label %21, label %19

19:                                               ; preds = %.lr.ph
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i64 noundef %.08)
  %.pre = load i64, ptr %1, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %.lr.ph, %19
  %22 = phi i64 [ %15, %.lr.ph ], [ %.pre, %19 ]
  %23 = add nuw nsw i64 %.08, 1
  %.not.not = icmp slt i64 %.08, %22
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %21, %5, %0
  %.str.5.sink = phi ptr [ @.str.1, %0 ], [ @.str.5, %5 ], [ @.str.5, %21 ]
  %24 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.5.sink)
  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 @puts(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

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"}


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