; LLVM IR from DionysiosB/CodeForces :: 0300-0399 (350A-TL)

; 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 [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 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 i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i8, align 1
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 100, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 1, ptr %7, align 1, !tbaa !9
  br label %9

9:                                                ; preds = %26, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr %2, align 4, !tbaa !5
  %12 = icmp ne i32 %10, 0
  br i1 %12, label %13, label %27

13:                                               ; preds = %9
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %6)
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = icmp sgt i32 %15, %16
  br i1 %17, label %18, label %20

18:                                               ; preds = %13
  %19 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %19, ptr %4, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %18, %13
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = icmp slt i32 %21, %22
  br i1 %23, label %24, label %26

24:                                               ; preds = %20
  %25 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %25, ptr %5, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %24, %20
  br label %9, !llvm.loop !11

27:                                               ; preds = %9
  br label %28

28:                                               ; preds = %43, %27
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = add nsw i32 %29, -1
  store i32 %30, ptr %3, align 4, !tbaa !5
  %31 = icmp ne i32 %29, 0
  br i1 %31, label %32, label %44

32:                                               ; preds = %28
  %33 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %6)
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = load i32, ptr %4, align 4, !tbaa !5
  %36 = icmp sle i32 %34, %35
  br i1 %36, label %42, label %37

37:                                               ; preds = %32
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = mul nsw i32 2, %39
  %41 = icmp sle i32 %38, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %37, %32
  store i8 0, ptr %7, align 1, !tbaa !9
  br label %44

43:                                               ; preds = %37
  br label %28, !llvm.loop !13

44:                                               ; preds = %42, %28
  %45 = load i32, ptr %4, align 4, !tbaa !5
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = mul nsw i32 2, %46
  %48 = icmp slt i32 %45, %47
  br i1 %48, label %49, label %52

49:                                               ; preds = %44
  %50 = load i32, ptr %5, align 4, !tbaa !5
  %51 = mul nsw i32 2, %50
  store i32 %51, ptr %6, align 4, !tbaa !5
  br label %54

52:                                               ; preds = %44
  %53 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %53, ptr %6, align 4, !tbaa !5
  br label %54

54:                                               ; preds = %52, %49
  %55 = load i8, ptr %7, align 1, !tbaa !9, !range !14, !noundef !15
  %56 = trunc i8 %55 to i1
  br i1 %56, label %57, label %60

57:                                               ; preds = %54
  %58 = load i32, ptr %6, align 4, !tbaa !5
  %59 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %58)
  br label %62

60:                                               ; preds = %54
  %61 = call i32 @puts(ptr noundef @.str.3)
  br label %62

62:                                               ; preds = %60, %57
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, 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

declare i32 @printf(ptr noundef, ...) #2

declare i32 @puts(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = !{i8 0, i8 2}
!15 = !{}


; 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 [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 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 i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  store i32 0, ptr %2, align 4, !tbaa !5
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = add nsw i32 %5, -1
  store i32 %6, ptr %1, align 4, !tbaa !5
  %.not19 = icmp eq i32 %5, 0
  br i1 %.not19, label %.preheader, label %.lr.ph

.preheader.loopexit:                              ; preds = %.lr.ph
  %7 = shl i32 %.1, 1
  br label %.preheader

.preheader:                                       ; preds = %.preheader.loopexit, %0
  %.010.lcssa = phi i32 [ 0, %0 ], [ %spec.select, %.preheader.loopexit ]
  %.09.lcssa = phi i32 [ 200, %0 ], [ %7, %.preheader.loopexit ]
  %invariant.smax = call i32 @llvm.smax.i32(i32 %.010.lcssa, i32 %.09.lcssa)
  br label %12

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.0921 = phi i32 [ %.1, %.lr.ph ], [ 100, %0 ]
  %.01020 = phi i32 [ %spec.select, %.lr.ph ], [ 0, %0 ]
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %.fr = freeze i32 %9
  %spec.select = call i32 @llvm.smax.i32(i32 %.fr, i32 %.01020)
  %.1 = call i32 @llvm.smin.i32(i32 %.fr, i32 %.0921)
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %10, 0
  br i1 %.not, label %.preheader.loopexit, label %.lr.ph, !llvm.loop !9

12:                                               ; preds = %.preheader, %15
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = add nsw i32 %13, -1
  store i32 %14, ptr %2, align 4, !tbaa !5
  %.not16 = icmp eq i32 %13, 0
  br i1 %.not16, label %18, label %15

15:                                               ; preds = %12
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %or.cond = icmp sgt i32 %17, %invariant.smax
  br i1 %or.cond, label %12, label %20, !llvm.loop !11

18:                                               ; preds = %12
  store i32 %invariant.smax, ptr %3, align 4, !tbaa !5
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %invariant.smax)
  br label %22

20:                                               ; preds = %15
  store i32 %invariant.smax, ptr %3, align 4, !tbaa !5
  %21 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %22

22:                                               ; preds = %20, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, 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: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @puts(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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #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 = !{!"int", !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: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass