; LLVM IR from DionysiosB/CodeForces :: 1999C-Showering (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 i8, align 1
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %12

12:                                               ; preds = %43, %0
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = add nsw i64 %13, -1
  store i64 %14, ptr %2, align 8, !tbaa !5
  %15 = icmp ne i64 %13, 0
  br i1 %15, label %16, label %49

16:                                               ; preds = %12
  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
  %17 = 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
  store i64 0, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 0, ptr %7, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %33, %16
  %19 = load i64, ptr %8, align 8, !tbaa !5
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = icmp slt i64 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %36

23:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %9, ptr noundef %10)
  %25 = load i64, ptr %6, align 8, !tbaa !5
  %26 = load i64, ptr %4, align 8, !tbaa !5
  %27 = add nsw i64 %25, %26
  %28 = load i64, ptr %9, align 8, !tbaa !5
  %29 = icmp sle i64 %27, %28
  br i1 %29, label %30, label %31

30:                                               ; preds = %23
  store i8 1, ptr %7, align 1, !tbaa !9
  br label %31

31:                                               ; preds = %30, %23
  %32 = load i64, ptr %10, align 8, !tbaa !5
  store i64 %32, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %33

33:                                               ; preds = %31
  %34 = load i64, ptr %8, align 8, !tbaa !5
  %35 = add nsw i64 %34, 1
  store i64 %35, ptr %8, align 8, !tbaa !5
  br label %18, !llvm.loop !11

36:                                               ; preds = %22
  %37 = load i64, ptr %6, align 8, !tbaa !5
  %38 = load i64, ptr %4, align 8, !tbaa !5
  %39 = add nsw i64 %37, %38
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = icmp sle i64 %39, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %36
  store i8 1, ptr %7, align 1, !tbaa !9
  br label %43

43:                                               ; preds = %42, %36
  %44 = load i8, ptr %7, align 1, !tbaa !9, !range !13, !noundef !14
  %45 = trunc i8 %44 to i1
  %46 = zext i1 %45 to i64
  %47 = select i1 %45, ptr @.str.3, ptr @.str.4
  %48 = call i32 @puts(ptr noundef %47)
  call void @llvm.lifetime.end.p0(i64 1, 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 %12, !llvm.loop !15

49:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %50 = load i32, ptr %1, align 4
  ret i32 %50
}

; 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !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 [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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %8 = load i64, ptr %1, align 8, !tbaa !5
  %9 = add nsw i64 %8, -1
  store i64 %9, ptr %1, align 8, !tbaa !5
  %.not15 = icmp eq i64 %8, 0
  br i1 %.not15, label %._crit_edge18, label %.lr.ph17

.lr.ph17:                                         ; preds = %0, %._crit_edge
  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
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp sgt i64 %11, 0
  br i1 %12, label %.lr.ph, label %.lr.ph17.._crit_edge_crit_edge

.lr.ph17.._crit_edge_crit_edge:                   ; preds = %.lr.ph17
  %.pre = load i64, ptr %3, align 8, !tbaa !5
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.lr.ph17.._crit_edge_crit_edge
  %13 = phi i64 [ %.pre, %.lr.ph17.._crit_edge_crit_edge ], [ %22, %.lr.ph ]
  %.07.lcssa = phi i64 [ 0, %.lr.ph17.._crit_edge_crit_edge ], [ %25, %.lr.ph ]
  %.06.lcssa = phi i1 [ false, %.lr.ph17.._crit_edge_crit_edge ], [ %spec.select10, %.lr.ph ]
  %14 = add nsw i64 %13, %.07.lcssa
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %.not8 = icmp sle i64 %14, %15
  %16 = select i1 %.not8, i1 true, i1 %.06.lcssa
  %17 = select i1 %16, ptr @.str.3, ptr @.str.4
  %18 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %17)
  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
  %19 = load i64, ptr %1, align 8, !tbaa !5
  %20 = add nsw i64 %19, -1
  store i64 %20, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %19, 0
  br i1 %.not, label %._crit_edge18, label %.lr.ph17, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph17, %.lr.ph
  %.013 = phi i64 [ %26, %.lr.ph ], [ 0, %.lr.ph17 ]
  %.0612 = phi i1 [ %spec.select10, %.lr.ph ], [ false, %.lr.ph17 ]
  %.0711 = phi i64 [ %25, %.lr.ph ], [ 0, %.lr.ph17 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %6) #3
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = add nsw i64 %22, %.0711
  %24 = load i64, ptr %5, align 8, !tbaa !5
  %.not9 = icmp sle i64 %23, %24
  %spec.select10 = select i1 %.not9, i1 true, i1 %.0612
  %25 = load i64, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  %26 = add nuw nsw i64 %.013, 1
  %27 = load i64, ptr %2, align 8, !tbaa !5
  %28 = icmp slt i64 %26, %27
  br i1 %28, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge18:                                    ; preds = %._crit_edge, %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,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass