; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1363A-OddSelection)

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

10:                                               ; preds = %52, %0
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %2, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %60

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !5
  br label %16

16:                                               ; preds = %27, %14
  %17 = load i64, ptr %6, align 8, !tbaa !5
  %18 = load i64, ptr %3, align 8, !tbaa !5
  %19 = icmp slt i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %30

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %7)
  %23 = load i64, ptr %7, align 8, !tbaa !5
  %24 = srem i64 %23, 2
  %25 = load i64, ptr %5, align 8, !tbaa !5
  %26 = add nsw i64 %25, %24
  store i64 %26, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %27

27:                                               ; preds = %21
  %28 = load i64, ptr %6, align 8, !tbaa !5
  %29 = add nsw i64 %28, 1
  store i64 %29, ptr %6, align 8, !tbaa !5
  br label %16, !llvm.loop !9

30:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  %31 = load i64, ptr %5, align 8, !tbaa !5
  %32 = icmp sge i64 %31, 1
  br i1 %32, label %33, label %52

33:                                               ; preds = %30
  %34 = load i64, ptr %4, align 8, !tbaa !5
  %35 = load i64, ptr %3, align 8, !tbaa !5
  %36 = icmp eq i64 %34, %35
  br i1 %36, label %37, label %41

37:                                               ; preds = %33
  %38 = load i64, ptr %5, align 8, !tbaa !5
  %39 = srem i64 %38, 2
  %40 = icmp eq i64 %39, 0
  br i1 %40, label %52, label %41

41:                                               ; preds = %37, %33
  %42 = load i64, ptr %5, align 8, !tbaa !5
  %43 = load i64, ptr %3, align 8, !tbaa !5
  %44 = icmp eq i64 %42, %43
  br i1 %44, label %45, label %49

45:                                               ; preds = %41
  %46 = load i64, ptr %4, align 8, !tbaa !5
  %47 = srem i64 %46, 2
  %48 = icmp eq i64 %47, 0
  br label %49

49:                                               ; preds = %45, %41
  %50 = phi i1 [ false, %41 ], [ %48, %45 ]
  %51 = xor i1 %50, true
  br label %52

52:                                               ; preds = %49, %37, %30
  %53 = phi i1 [ false, %37 ], [ false, %30 ], [ %51, %49 ]
  %54 = zext i1 %53 to i8
  store i8 %54, ptr %8, align 1, !tbaa !11
  %55 = load i8, ptr %8, align 1, !tbaa !11, !range !13, !noundef !14
  %56 = trunc i8 %55 to i1
  %57 = zext i1 %56 to i64
  %58 = select i1 %56, ptr @.str.2, ptr @.str.3
  %59 = call i32 @puts(ptr noundef %58)
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #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 %10, !llvm.loop !15

60:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, 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

; 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 [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = 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
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %6 = load i64, ptr %1, align 8, !tbaa !5
  %7 = add nsw i64 %6, -1
  store i64 %7, ptr %1, align 8, !tbaa !5
  %.not17 = icmp eq i64 %6, 0
  br i1 %.not17, label %._crit_edge20, label %.lr.ph19

.lr.ph19:                                         ; preds = %0, %.thread
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = icmp sgt i64 %9, 0
  br i1 %10, label %.lr.ph, label %.thread

._crit_edge:                                      ; preds = %.lr.ph
  %11 = icmp sgt i64 %15, 0
  br i1 %11, label %19, label %.thread

.lr.ph:                                           ; preds = %.lr.ph19, %.lr.ph
  %.015 = phi i64 [ %15, %.lr.ph ], [ 0, %.lr.ph19 ]
  %.0714 = phi i64 [ %16, %.lr.ph ], [ 0, %.lr.ph19 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4)
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = srem i64 %13, 2
  %15 = add nsw i64 %14, %.015
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  %16 = add nuw nsw i64 %.0714, 1
  %17 = load i64, ptr %2, align 8, !tbaa !5
  %18 = icmp slt i64 %16, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !9

19:                                               ; preds = %._crit_edge
  %20 = load i64, ptr %3, align 8
  %21 = icmp eq i64 %20, %17
  %22 = and i64 %15, 1
  %23 = icmp eq i64 %22, 0
  %or.cond = and i1 %21, %23
  br i1 %or.cond, label %.thread, label %24

24:                                               ; preds = %19
  %25 = icmp ne i64 %15, %17
  %26 = and i64 %20, 1
  %27 = icmp ne i64 %26, 0
  %.not13 = or i1 %25, %27
  %cond.fr = freeze i1 %.not13
  %spec.select = select i1 %cond.fr, ptr @.str.2, ptr @.str.3
  br label %.thread

.thread:                                          ; preds = %.lr.ph19, %24, %19, %._crit_edge
  %28 = phi ptr [ @.str.3, %._crit_edge ], [ @.str.3, %19 ], [ %spec.select, %24 ], [ @.str.3, %.lr.ph19 ]
  %29 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %28)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %30 = load i64, ptr %1, align 8, !tbaa !5
  %31 = add nsw i64 %30, -1
  store i64 %31, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %30, 0
  br i1 %.not, label %._crit_edge20, label %.lr.ph19, !llvm.loop !11

._crit_edge20:                                    ; preds = %.thread, %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