; LLVM IR from DionysiosB/CodeForces :: 0800-0899 (892A-Greed)

; 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 [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 i64, align 8
  %9 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  store i64 0, ptr %3, align 8, !tbaa !5
  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
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %21, %0
  %12 = load i64, ptr %6, align 8, !tbaa !9
  %13 = load i64, ptr %2, align 8, !tbaa !9
  %14 = icmp slt i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %24

16:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %7)
  %18 = load i64, ptr %7, align 8, !tbaa !5
  %19 = load i64, ptr %3, align 8, !tbaa !5
  %20 = add nsw i64 %19, %18
  store i64 %20, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  br label %21

21:                                               ; preds = %16
  %22 = load i64, ptr %6, align 8, !tbaa !9
  %23 = add nsw i64 %22, 1
  store i64 %23, ptr %6, align 8, !tbaa !9
  br label %11, !llvm.loop !11

24:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %46, %24
  %26 = load i64, ptr %8, align 8, !tbaa !9
  %27 = load i64, ptr %2, align 8, !tbaa !9
  %28 = icmp slt i64 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %49

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %31 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %9)
  %32 = load i64, ptr %9, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !5
  %34 = icmp sge i64 %32, %33
  br i1 %34, label %35, label %38

35:                                               ; preds = %30
  %36 = load i64, ptr %5, align 8, !tbaa !5
  store i64 %36, ptr %4, align 8, !tbaa !5
  %37 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %37, ptr %5, align 8, !tbaa !5
  br label %45

38:                                               ; preds = %30
  %39 = load i64, ptr %9, align 8, !tbaa !5
  %40 = load i64, ptr %4, align 8, !tbaa !5
  %41 = icmp sge i64 %39, %40
  br i1 %41, label %42, label %44

42:                                               ; preds = %38
  %43 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %43, ptr %4, align 8, !tbaa !5
  br label %44

44:                                               ; preds = %42, %38
  br label %45

45:                                               ; preds = %44, %35
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %46

46:                                               ; preds = %45
  %47 = load i64, ptr %8, align 8, !tbaa !9
  %48 = add nsw i64 %47, 1
  store i64 %48, ptr %8, align 8, !tbaa !9
  br label %25, !llvm.loop !13

49:                                               ; preds = %29
  %50 = load i64, ptr %3, align 8, !tbaa !5
  %51 = load i64, ptr %4, align 8, !tbaa !5
  %52 = load i64, ptr %5, align 8, !tbaa !5
  %53 = add nsw i64 %51, %52
  %54 = icmp sle i64 %50, %53
  %55 = zext i1 %54 to i64
  %56 = select i1 %54, ptr @.str.2, ptr @.str.3
  %57 = call i32 @puts(ptr noundef %56)
  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
  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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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 [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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = icmp sgt i64 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %7 = icmp sgt i64 %12, 0
  br i1 %7, label %.lr.ph25, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01121 = phi i64 [ %11, %.lr.ph ], [ 0, %0 ]
  %.01520 = phi i64 [ %10, %.lr.ph ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %9 = load i64, ptr %2, align 8, !tbaa !9
  %10 = add nsw i64 %9, %.01520
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  %11 = add nuw nsw i64 %.01121, 1
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %13 = icmp slt i64 %11, %12
  br i1 %13, label %.lr.ph, label %.preheader, !llvm.loop !11

._crit_edge.loopexit:                             ; preds = %.lr.ph25
  %14 = add nuw nsw i64 %.1, %.114
  br label %._crit_edge

._crit_edge:                                      ; preds = %0, %._crit_edge.loopexit, %.preheader
  %.015.lcssa29 = phi i64 [ %10, %.preheader ], [ %10, %._crit_edge.loopexit ], [ 0, %0 ]
  %15 = phi i64 [ 0, %.preheader ], [ %14, %._crit_edge.loopexit ], [ 0, %0 ]
  %.not = icmp sgt i64 %.015.lcssa29, %15
  %16 = select i1 %.not, ptr @.str.3, ptr @.str.2
  %17 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %16)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret i32 0

.lr.ph25:                                         ; preds = %.preheader, %.lr.ph25
  %.024 = phi i64 [ %20, %.lr.ph25 ], [ 0, %.preheader ]
  %.01223 = phi i64 [ %.1, %.lr.ph25 ], [ 0, %.preheader ]
  %.01322 = phi i64 [ %.114, %.lr.ph25 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %19 = load i64, ptr %3, align 8, !tbaa !9
  %.not18 = icmp slt i64 %19, %.01223
  %spec.select = call i64 @llvm.smax.i64(i64 %19, i64 %.01322)
  %.114 = select i1 %.not18, i64 %spec.select, i64 %.01223
  %.1 = call i64 @llvm.smax.i64(i64 %19, i64 %.01223)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %20 = add nuw nsw i64 %.024, 1
  %21 = load i64, ptr %1, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %.lr.ph25, label %._crit_edge.loopexit, !llvm.loop !13
}

; 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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smax.i64(i64, i64) #3

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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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