; LLVM IR from DionysiosB/CodeForces :: 1848A-VikaAndHerFriends (main)

; 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 [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = 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
  %9 = alloca i8, align 1
  %10 = alloca i64, align 8
  %11 = alloca i64, align 8
  %12 = alloca i64, align 8
  %13 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %15

15:                                               ; preds = %53, %0
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = add nsw i64 %16, -1
  store i64 %17, ptr %2, align 8, !tbaa !5
  %18 = icmp ne i64 %16, 0
  br i1 %18, label %19, label %59

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4, ptr noundef %5)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %6, ptr noundef %7)
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  %22 = load i64, ptr %6, align 8, !tbaa !5
  %23 = load i64, ptr %7, align 8, !tbaa !5
  %24 = add nsw i64 %22, %23
  %25 = srem i64 %24, 2
  %26 = icmp ne i64 %25, 0
  %27 = zext i1 %26 to i8
  store i8 %27, ptr %8, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #3
  store i8 1, ptr %9, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !5
  br label %28

28:                                               ; preds = %50, %19
  %29 = load i64, ptr %10, align 8, !tbaa !5
  %30 = load i64, ptr %5, align 8, !tbaa !5
  %31 = icmp slt i64 %29, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %53

33:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %34 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %11, ptr noundef %12)
  call void @llvm.lifetime.start.p0(i64 1, ptr %13) #3
  %35 = load i64, ptr %11, align 8, !tbaa !5
  %36 = load i64, ptr %12, align 8, !tbaa !5
  %37 = add nsw i64 %35, %36
  %38 = srem i64 %37, 2
  %39 = icmp ne i64 %38, 0
  %40 = zext i1 %39 to i8
  store i8 %40, ptr %13, align 1, !tbaa !9
  %41 = load i8, ptr %13, align 1, !tbaa !9, !range !11, !noundef !12
  %42 = trunc i8 %41 to i1
  %43 = zext i1 %42 to i32
  %44 = load i8, ptr %8, align 1, !tbaa !9, !range !11, !noundef !12
  %45 = trunc i8 %44 to i1
  %46 = zext i1 %45 to i32
  %47 = icmp eq i32 %43, %46
  br i1 %47, label %48, label %49

48:                                               ; preds = %33
  store i8 0, ptr %9, align 1, !tbaa !9
  br label %49

49:                                               ; preds = %48, %33
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  br label %50

50:                                               ; preds = %49
  %51 = load i64, ptr %10, align 8, !tbaa !5
  %52 = add nsw i64 %51, 1
  store i64 %52, ptr %10, align 8, !tbaa !5
  br label %28, !llvm.loop !13

53:                                               ; preds = %32
  %54 = load i8, ptr %9, align 1, !tbaa !9, !range !11, !noundef !12
  %55 = trunc i8 %54 to i1
  %56 = zext i1 %55 to i64
  %57 = select i1 %55, ptr @.str.3, ptr @.str.4
  %58 = call i32 @puts(ptr noundef %57)
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #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 %15, !llvm.loop !15

59:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %60 = load i32, ptr %1, align 4
  ret i32 %60
}

; 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 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 [12 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.4 = 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
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %10 = load i64, ptr %1, align 8, !tbaa !5
  %11 = add nsw i64 %10, -1
  store i64 %11, ptr %1, align 8, !tbaa !5
  %.not9 = icmp eq i64 %10, 0
  br i1 %.not9, label %._crit_edge12, label %.lr.ph11

.lr.ph11:                                         ; preds = %0, %19
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %14 = load i64, ptr %5, align 8, !tbaa !5
  %15 = load i64, ptr %6, align 8, !tbaa !5
  %16 = add nsw i64 %15, %14
  %17 = load i64, ptr %4, align 8, !tbaa !5
  %18 = icmp sgt i64 %17, 0
  br i1 %18, label %.lr.ph, label %._crit_edge.thread

._crit_edge:                                      ; preds = %.lr.ph
  br i1 %spec.select, label %._crit_edge.thread, label %19

._crit_edge.thread:                               ; preds = %.lr.ph11, %._crit_edge
  br label %19

19:                                               ; preds = %._crit_edge, %._crit_edge.thread
  %20 = phi ptr [ @.str.3, %._crit_edge.thread ], [ @.str.4, %._crit_edge ]
  %21 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %20)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %22 = load i64, ptr %1, align 8, !tbaa !5
  %23 = add nsw i64 %22, -1
  store i64 %23, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %22, 0
  br i1 %.not, label %._crit_edge12, label %.lr.ph11, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph11, %.lr.ph
  %.08 = phi i1 [ %spec.select, %.lr.ph ], [ true, %.lr.ph11 ]
  %.067 = phi i64 [ %31, %.lr.ph ], [ 0, %.lr.ph11 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #3
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %7, ptr noundef nonnull %8)
  %25 = load i64, ptr %7, align 8, !tbaa !5
  %26 = load i64, ptr %8, align 8, !tbaa !5
  %27 = add nsw i64 %26, %25
  %28 = xor i64 %27, %16
  %.fr = freeze i64 %28
  %29 = and i64 %.fr, 1
  %30 = icmp ne i64 %29, 0
  %spec.select = select i1 %30, i1 %.08, i1 false
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #3
  %31 = add nuw nsw i64 %.067, 1
  %32 = load i64, ptr %4, align 8, !tbaa !5
  %33 = icmp slt i64 %31, %32
  br i1 %33, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge12:                                    ; preds = %19, %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: AggressiveInstCombinePass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass