; LLVM IR from tangjz/acm-icpc :: uvalive (7215)

; 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"

@t = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @t)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %4

4:                                                ; preds = %46, %0
  %5 = load i32, ptr %2, align 4, !tbaa !5
  %6 = load i32, ptr @t, align 4, !tbaa !5
  %7 = icmp sle i32 %5, %6
  br i1 %7, label %9, label %8

8:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %49

9:                                                ; preds = %4
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr @n, align 4, !tbaa !5
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %40, label %14

14:                                               ; preds = %9
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = icmp eq i32 %15, 14
  br i1 %16, label %40, label %17

17:                                               ; preds = %14
  %18 = load i32, ptr @n, align 4, !tbaa !5
  %19 = icmp eq i32 %18, 34
  br i1 %19, label %40, label %20

20:                                               ; preds = %17
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = srem i32 %21, 34
  %23 = icmp eq i32 %22, 4
  br i1 %23, label %40, label %24

24:                                               ; preds = %20
  %25 = load i32, ptr @n, align 4, !tbaa !5
  %26 = srem i32 %25, 34
  %27 = icmp eq i32 %26, 8
  br i1 %27, label %40, label %28

28:                                               ; preds = %24
  %29 = load i32, ptr @n, align 4, !tbaa !5
  %30 = srem i32 %29, 34
  %31 = icmp eq i32 %30, 20
  br i1 %31, label %40, label %32

32:                                               ; preds = %28
  %33 = load i32, ptr @n, align 4, !tbaa !5
  %34 = srem i32 %33, 34
  %35 = icmp eq i32 %34, 24
  br i1 %35, label %40, label %36

36:                                               ; preds = %32
  %37 = load i32, ptr @n, align 4, !tbaa !5
  %38 = srem i32 %37, 34
  %39 = icmp eq i32 %38, 28
  br i1 %39, label %40, label %41

40:                                               ; preds = %36, %32, %28, %24, %20, %17, %14, %9
  br label %42

41:                                               ; preds = %36
  br label %42

42:                                               ; preds = %41, %40
  %43 = phi ptr [ @.str.2, %40 ], [ @.str.3, %41 ]
  %44 = getelementptr inbounds [5 x i8], ptr %43, i64 0, i64 0
  %45 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %11, ptr noundef %44)
  br label %46

46:                                               ; preds = %42
  %47 = load i32, ptr %2, align 4, !tbaa !5
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %2, align 4, !tbaa !5
  br label %4, !llvm.loop !9

49:                                               ; preds = %8
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { "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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@t = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @t)
  %2 = load i32, ptr @t, align 4, !tbaa !5
  %.not8 = icmp slt i32 %2, 1
  br i1 %.not8, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %switch.lookup, %0
  ret i32 0

.lr.ph:                                           ; preds = %0, %switch.lookup
  %.09 = phi i32 [ %14, %switch.lookup ], [ 1, %0 ]
  %3 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %4 = load i32, ptr @n, align 4
  switch i32 %4, label %5 [
    i32 34, label %switch.lookup
    i32 14, label %switch.lookup
    i32 0, label %switch.lookup
  ]

5:                                                ; preds = %.lr.ph
  %6 = srem i32 %4, 34
  %7 = add nsw i32 %6, -4
  %8 = tail call i32 @llvm.fshl.i32(i32 %7, i32 %7, i32 30)
  %9 = icmp ult i32 %8, 6
  br i1 %9, label %switch.hole_check, label %10

10:                                               ; preds = %switch.hole_check, %5
  %11 = icmp eq i32 %6, 28
  %spec.select = select i1 %11, ptr @.str.2, ptr @.str.3
  br label %switch.lookup

switch.hole_check:                                ; preds = %5
  %switch.maskindex = trunc nuw i32 %8 to i8
  %switch.shifted = lshr i8 51, %switch.maskindex
  %switch.lobit = trunc i8 %switch.shifted to i1
  br i1 %switch.lobit, label %switch.lookup, label %10

switch.lookup:                                    ; preds = %switch.hole_check, %.lr.ph, %.lr.ph, %.lr.ph, %10
  %12 = phi ptr [ @.str.2, %.lr.ph ], [ %spec.select, %10 ], [ @.str.2, %.lr.ph ], [ @.str.2, %.lr.ph ], [ @.str.2, %switch.hole_check ]
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.09, ptr noundef nonnull %12)
  %14 = add nuw nsw i32 %.09, 1
  %15 = load i32, ptr @t, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.09, %15
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.fshl.i32(i32, i32, i32) #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 = { 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 #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass