; LLVM IR from DionysiosB/CodeForces :: 0800-0899 (893D-CreditCard)

; 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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = 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 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 i32, align 4
  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)
  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 !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 1, ptr %7, align 1, !tbaa !9
  br label %11

11:                                               ; preds = %59, %0
  %12 = load i64, ptr %2, align 8, !tbaa !5
  %13 = add nsw i64 %12, -1
  store i64 %13, ptr %2, align 8, !tbaa !5
  %14 = icmp ne i64 %12, 0
  br i1 %14, label %15, label %60

15:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %8)
  %17 = load i64, ptr %8, align 8, !tbaa !5
  %18 = icmp eq i64 %17, 0
  br i1 %18, label %19, label %35

19:                                               ; preds = %15
  %20 = load i64, ptr %5, align 8, !tbaa !5
  %21 = icmp sge i64 %20, 0
  br i1 %21, label %22, label %30

22:                                               ; preds = %19
  %23 = load i64, ptr %4, align 8, !tbaa !5
  %24 = icmp sgt i64 %23, 0
  br i1 %24, label %25, label %27

25:                                               ; preds = %22
  %26 = load i64, ptr %4, align 8, !tbaa !5
  br label %28

27:                                               ; preds = %22
  br label %28

28:                                               ; preds = %27, %25
  %29 = phi i64 [ %26, %25 ], [ 0, %27 ]
  store i64 %29, ptr %4, align 8, !tbaa !5
  br label %34

30:                                               ; preds = %19
  %31 = load i64, ptr %6, align 8, !tbaa !5
  %32 = add nsw i64 %31, 1
  store i64 %32, ptr %6, align 8, !tbaa !5
  store i64 0, ptr %4, align 8, !tbaa !5
  %33 = load i64, ptr %3, align 8, !tbaa !5
  store i64 %33, ptr %5, align 8, !tbaa !5
  br label %34

34:                                               ; preds = %30, %28
  br label %56

35:                                               ; preds = %15
  %36 = load i64, ptr %8, align 8, !tbaa !5
  %37 = load i64, ptr %4, align 8, !tbaa !5
  %38 = add nsw i64 %37, %36
  store i64 %38, ptr %4, align 8, !tbaa !5
  %39 = load i64, ptr %8, align 8, !tbaa !5
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = add nsw i64 %40, %39
  store i64 %41, ptr %5, align 8, !tbaa !5
  %42 = load i64, ptr %4, align 8, !tbaa !5
  %43 = load i64, ptr %3, align 8, !tbaa !5
  %44 = icmp sgt i64 %42, %43
  br i1 %44, label %45, label %46

45:                                               ; preds = %35
  store i8 0, ptr %7, align 1, !tbaa !9
  store i32 3, ptr %9, align 4
  br label %57

46:                                               ; preds = %35
  %47 = load i64, ptr %5, align 8, !tbaa !5
  %48 = load i64, ptr %3, align 8, !tbaa !5
  %49 = icmp slt i64 %47, %48
  br i1 %49, label %50, label %52

50:                                               ; preds = %46
  %51 = load i64, ptr %5, align 8, !tbaa !5
  br label %54

52:                                               ; preds = %46
  %53 = load i64, ptr %3, align 8, !tbaa !5
  br label %54

54:                                               ; preds = %52, %50
  %55 = phi i64 [ %51, %50 ], [ %53, %52 ]
  store i64 %55, ptr %5, align 8, !tbaa !5
  br label %56

56:                                               ; preds = %54, %34
  store i32 0, ptr %9, align 4
  br label %57

57:                                               ; preds = %56, %45
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %58 = load i32, ptr %9, align 4
  switch i32 %58, label %70 [
    i32 0, label %59
    i32 3, label %60
  ]

59:                                               ; preds = %57
  br label %11, !llvm.loop !11

60:                                               ; preds = %57, %11
  %61 = load i8, ptr %7, align 1, !tbaa !9, !range !13, !noundef !14
  %62 = trunc i8 %61 to i1
  br i1 %62, label %63, label %65

63:                                               ; preds = %60
  %64 = load i64, ptr %6, align 8, !tbaa !5
  br label %66

65:                                               ; preds = %60
  br label %66

66:                                               ; preds = %65, %63
  %67 = phi i64 [ %64, %63 ], [ -1, %65 ]
  %68 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %67)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %9, align 4
  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
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %69 = load i32, ptr %1, align 4
  ret i32 %69

70:                                               ; preds = %57
  unreachable
}

; 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", !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 = !{}


; 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 [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = 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 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %5 = load i64, ptr %1, align 8, !tbaa !5
  %6 = add nsw i64 %5, -1
  store i64 %6, ptr %1, align 8, !tbaa !5
  %.not34 = icmp eq i64 %5, 0
  br i1 %.not34, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %0, %24
  %.01437 = phi i64 [ %.216, %24 ], [ 0, %0 ]
  %.01736 = phi i64 [ %.219, %24 ], [ 0, %0 ]
  %.02035 = phi i64 [ %.222, %24 ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3)
  %8 = load i64, ptr %3, align 8, !tbaa !5
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %10, label %17

10:                                               ; preds = %.lr.ph
  %11 = icmp sgt i64 %.01736, -1
  br i1 %11, label %12, label %14

12:                                               ; preds = %10
  %13 = call i64 @llvm.smax.i64(i64 %.02035, i64 0)
  br label %24

14:                                               ; preds = %10
  %15 = add nsw i64 %.01437, 1
  %16 = load i64, ptr %2, align 8, !tbaa !5
  br label %24

17:                                               ; preds = %.lr.ph
  %18 = add nsw i64 %8, %.02035
  %19 = load i64, ptr %2, align 8
  %20 = icmp sgt i64 %18, %19
  br i1 %20, label %.thread, label %21

.thread:                                          ; preds = %17
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  br label %.loopexit

21:                                               ; preds = %17
  %22 = add nsw i64 %8, %.01736
  %23 = call i64 @llvm.smin.i64(i64 %22, i64 %19)
  br label %24

24:                                               ; preds = %21, %14, %12
  %.222 = phi i64 [ %13, %12 ], [ 0, %14 ], [ %18, %21 ]
  %.219 = phi i64 [ %.01736, %12 ], [ %16, %14 ], [ %23, %21 ]
  %.216 = phi i64 [ %.01437, %12 ], [ %15, %14 ], [ %.01437, %21 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %25 = load i64, ptr %1, align 8, !tbaa !5
  %26 = add nsw i64 %25, -1
  store i64 %26, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %25, 0
  br i1 %.not, label %.loopexit, label %.lr.ph

.loopexit:                                        ; preds = %24, %0, %.thread
  %27 = phi i64 [ -1, %.thread ], [ 0, %0 ], [ %.216, %24 ]
  %28 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %27)
  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

; 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"}


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