; LLVM IR from DionysiosB/CodeForces :: 0800-0899 (879B-TableTennis)

; 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 [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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 i32, align 4
  %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
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = load i64, ptr %2, align 8, !tbaa !5
  %13 = icmp slt i64 %11, %12
  br i1 %13, label %14, label %16

14:                                               ; preds = %0
  %15 = load i64, ptr %3, align 8, !tbaa !5
  br label %18

16:                                               ; preds = %0
  %17 = load i64, ptr %2, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %16, %14
  %19 = phi i64 [ %15, %14 ], [ %17, %16 ]
  store i64 %19, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, 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 1, ptr %6, align 8, !tbaa !9
  br label %21

21:                                               ; preds = %47, %18
  %22 = load i64, ptr %6, align 8, !tbaa !9
  %23 = load i64, ptr %2, align 8, !tbaa !5
  %24 = icmp slt i64 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  store i32 2, ptr %7, align 4
  br label %50

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %8)
  %28 = load i64, ptr %8, align 8, !tbaa !5
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = icmp sgt i64 %28, %29
  br i1 %30, label %31, label %35

31:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %32 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %32, ptr %9, align 8, !tbaa !5
  %33 = load i64, ptr %4, align 8, !tbaa !5
  store i64 %33, ptr %8, align 8, !tbaa !5
  %34 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %34, ptr %4, align 8, !tbaa !5
  store i64 1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %43

35:                                               ; preds = %26
  %36 = load i64, ptr %5, align 8, !tbaa !5
  %37 = add nsw i64 %36, 1
  store i64 %37, ptr %5, align 8, !tbaa !5
  %38 = load i64, ptr %5, align 8, !tbaa !5
  %39 = load i64, ptr %3, align 8, !tbaa !5
  %40 = icmp sge i64 %38, %39
  br i1 %40, label %41, label %42

41:                                               ; preds = %35
  store i32 2, ptr %7, align 4
  br label %44

42:                                               ; preds = %35
  br label %43

43:                                               ; preds = %42, %31
  store i32 0, ptr %7, align 4
  br label %44

44:                                               ; preds = %43, %41
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %45 = load i32, ptr %7, align 4
  switch i32 %45, label %50 [
    i32 0, label %46
  ]

46:                                               ; preds = %44
  br label %47

47:                                               ; preds = %46
  %48 = load i64, ptr %6, align 8, !tbaa !9
  %49 = add nsw i64 %48, 1
  store i64 %49, ptr %6, align 8, !tbaa !9
  br label %21, !llvm.loop !11

50:                                               ; preds = %44, %25
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %51

51:                                               ; preds = %50
  %52 = load i64, ptr %4, align 8, !tbaa !5
  %53 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %52)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %7, align 4
  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
  %54 = load i32, ptr %1, align 4
  ret i32 %54
}

; 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 @printf(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"}


; 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 [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 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) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %5 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %6 = load i64, ptr %2, align 8
  %7 = load i64, ptr %1, align 8
  %8 = call i64 @llvm.smin.i64(i64 %6, i64 %7)
  store i64 %8, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %10 = load i64, ptr %1, align 8, !tbaa !5
  %11 = icmp sgt i64 %10, 1
  br i1 %11, label %.lr.ph, label %.._crit_edge_crit_edge

.._crit_edge_crit_edge:                           ; preds = %0
  %.pre = load i64, ptr %3, align 8, !tbaa !5
  br label %._crit_edge

.lr.ph:                                           ; preds = %0, %19
  %.0717 = phi i64 [ %21, %19 ], [ 1, %0 ]
  %.0816 = phi i64 [ %.215, %19 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %4)
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %3, align 8, !tbaa !5
  %15 = icmp sgt i64 %13, %14
  br i1 %15, label %.thread, label %16

.thread:                                          ; preds = %.lr.ph
  store i64 %13, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br label %19

16:                                               ; preds = %.lr.ph
  %17 = add nsw i64 %.0816, 1
  %18 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp slt i64 %17, %18
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  br i1 %.not, label %19, label %._crit_edge

19:                                               ; preds = %.thread, %16
  %20 = phi i64 [ %13, %.thread ], [ %14, %16 ]
  %.215 = phi i64 [ 1, %.thread ], [ %17, %16 ]
  %21 = add nuw nsw i64 %.0717, 1
  %22 = load i64, ptr %1, align 8, !tbaa !5
  %23 = icmp slt i64 %21, %22
  br i1 %23, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %16, %19, %.._crit_edge_crit_edge
  %24 = phi i64 [ %.pre, %.._crit_edge_crit_edge ], [ %14, %16 ], [ %20, %19 ]
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %24)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  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 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smin.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 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: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass