; LLVM IR from DionysiosB/CodeForces :: 1400-1499 (1472B-FairDivision)

; 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 i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i8, align 1
  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)
  br label %9

9:                                                ; preds = %45, %0
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = add nsw i64 %10, -1
  store i64 %11, ptr %2, align 8, !tbaa !5
  %12 = icmp ne i64 %10, 0
  br i1 %12, label %13, label %51

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %14 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %19, %13
  %16 = load i64, ptr %3, align 8, !tbaa !5
  %17 = add nsw i64 %16, -1
  store i64 %17, ptr %3, align 8, !tbaa !5
  %18 = icmp ne i64 %16, 0
  br i1 %18, label %19, label %31

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %6)
  %21 = load i64, ptr %6, align 8, !tbaa !5
  %22 = icmp eq i64 %21, 1
  %23 = zext i1 %22 to i64
  %24 = load i64, ptr %4, align 8, !tbaa !5
  %25 = add nsw i64 %24, %23
  store i64 %25, ptr %4, align 8, !tbaa !5
  %26 = load i64, ptr %6, align 8, !tbaa !5
  %27 = icmp eq i64 %26, 2
  %28 = zext i1 %27 to i64
  %29 = load i64, ptr %5, align 8, !tbaa !5
  %30 = add nsw i64 %29, %28
  store i64 %30, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %15, !llvm.loop !9

31:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 1, ptr %7, align 1, !tbaa !11
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = srem i64 %32, 2
  %34 = icmp ne i64 %33, 0
  br i1 %34, label %35, label %36

35:                                               ; preds = %31
  store i8 0, ptr %7, align 1, !tbaa !11
  br label %45

36:                                               ; preds = %31
  %37 = load i64, ptr %4, align 8, !tbaa !5
  %38 = icmp eq i64 %37, 0
  br i1 %38, label %39, label %44

39:                                               ; preds = %36
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = srem i64 %40, 2
  %42 = icmp ne i64 %41, 0
  br i1 %42, label %43, label %44

43:                                               ; preds = %39
  store i8 0, ptr %7, align 1, !tbaa !11
  br label %44

44:                                               ; preds = %43, %39, %36
  br label %45

45:                                               ; preds = %44, %35
  %46 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %47 = trunc i8 %46 to i1
  %48 = zext i1 %47 to i64
  %49 = select i1 %47, ptr @.str.1, ptr @.str.2
  %50 = call i32 @puts(ptr noundef %49)
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %9, !llvm.loop !15

51:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %52 = load i32, ptr %1, align 4
  ret i32 %52
}

; 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !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 [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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not16 = icmp eq i64 %5, 0
  br i1 %.not16, label %._crit_edge19, label %.lr.ph18

.lr.ph18:                                         ; preds = %0, %23
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %8 = load i64, ptr %2, align 8, !tbaa !5
  %9 = add nsw i64 %8, -1
  store i64 %9, ptr %2, align 8, !tbaa !5
  %.not912 = icmp eq i64 %8, 0
  br i1 %.not912, label %._crit_edge.thread, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph18, %.lr.ph
  %.0714 = phi i64 [ %17, %.lr.ph ], [ 0, %.lr.ph18 ]
  %.0813 = phi i64 [ %14, %.lr.ph ], [ 0, %.lr.ph18 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = icmp eq i64 %11, 1
  %13 = zext i1 %12 to i64
  %14 = add nuw nsw i64 %.0813, %13
  %15 = icmp eq i64 %11, 2
  %16 = zext i1 %15 to i64
  %17 = add nuw nsw i64 %.0714, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  %18 = load i64, ptr %2, align 8, !tbaa !5
  %19 = add nsw i64 %18, -1
  store i64 %19, ptr %2, align 8, !tbaa !5
  %.not9 = icmp eq i64 %18, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph
  %20 = and i64 %14, 1
  %.not10 = icmp eq i64 %20, 0
  br i1 %.not10, label %._crit_edge.thread, label %23

._crit_edge.thread:                               ; preds = %.lr.ph18, %._crit_edge
  %.07.lcssa25 = phi i64 [ %17, %._crit_edge ], [ 0, %.lr.ph18 ]
  %.08.lcssa24 = phi i64 [ %14, %._crit_edge ], [ 0, %.lr.ph18 ]
  %21 = icmp ne i64 %.08.lcssa24, 0
  %22 = and i64 %.07.lcssa25, 1
  %.not11 = icmp eq i64 %22, 0
  %or.cond = select i1 %21, i1 true, i1 %.not11
  %spec.select = select i1 %or.cond, ptr @.str.1, ptr @.str.2
  br label %23

23:                                               ; preds = %._crit_edge.thread, %._crit_edge
  %.0 = phi ptr [ @.str.2, %._crit_edge ], [ %spec.select, %._crit_edge.thread ]
  %24 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.0)
  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_edge19, label %.lr.ph18, !llvm.loop !11

._crit_edge19:                                    ; preds = %23, %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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass