; LLVM IR from DionysiosB/CodeForces :: 1300-1399 (1351B-Square)

; 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 [8 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 i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %8

8:                                                ; preds = %67, %0
  %9 = load i64, ptr %2, align 8, !tbaa !5
  %10 = add nsw i64 %9, -1
  store i64 %10, ptr %2, align 8, !tbaa !5
  %11 = icmp ne i64 %9, 0
  br i1 %11, label %12, label %68

12:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %5, ptr noundef %6)
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = icmp eq i64 %15, %16
  br i1 %17, label %18, label %26

18:                                               ; preds = %12
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = load i64, ptr %6, align 8, !tbaa !5
  %21 = add nsw i64 %19, %20
  %22 = load i64, ptr %3, align 8, !tbaa !5
  %23 = icmp eq i64 %21, %22
  br i1 %23, label %24, label %26

24:                                               ; preds = %18
  %25 = call i32 @puts(ptr noundef @.str.2)
  br label %67

26:                                               ; preds = %18, %12
  %27 = load i64, ptr %3, align 8, !tbaa !5
  %28 = load i64, ptr %6, align 8, !tbaa !5
  %29 = icmp eq i64 %27, %28
  br i1 %29, label %30, label %38

30:                                               ; preds = %26
  %31 = load i64, ptr %4, align 8, !tbaa !5
  %32 = load i64, ptr %5, align 8, !tbaa !5
  %33 = add nsw i64 %31, %32
  %34 = load i64, ptr %3, align 8, !tbaa !5
  %35 = icmp eq i64 %33, %34
  br i1 %35, label %36, label %38

36:                                               ; preds = %30
  %37 = call i32 @puts(ptr noundef @.str.2)
  br label %66

38:                                               ; preds = %30, %26
  %39 = load i64, ptr %4, align 8, !tbaa !5
  %40 = load i64, ptr %5, align 8, !tbaa !5
  %41 = icmp eq i64 %39, %40
  br i1 %41, label %42, label %50

42:                                               ; preds = %38
  %43 = load i64, ptr %3, align 8, !tbaa !5
  %44 = load i64, ptr %6, align 8, !tbaa !5
  %45 = add nsw i64 %43, %44
  %46 = load i64, ptr %4, align 8, !tbaa !5
  %47 = icmp eq i64 %45, %46
  br i1 %47, label %48, label %50

48:                                               ; preds = %42
  %49 = call i32 @puts(ptr noundef @.str.2)
  br label %65

50:                                               ; preds = %42, %38
  %51 = load i64, ptr %4, align 8, !tbaa !5
  %52 = load i64, ptr %6, align 8, !tbaa !5
  %53 = icmp eq i64 %51, %52
  br i1 %53, label %54, label %62

54:                                               ; preds = %50
  %55 = load i64, ptr %3, align 8, !tbaa !5
  %56 = load i64, ptr %5, align 8, !tbaa !5
  %57 = add nsw i64 %55, %56
  %58 = load i64, ptr %4, align 8, !tbaa !5
  %59 = icmp eq i64 %57, %58
  br i1 %59, label %60, label %62

60:                                               ; preds = %54
  %61 = call i32 @puts(ptr noundef @.str.2)
  br label %64

62:                                               ; preds = %54, %50
  %63 = call i32 @puts(ptr noundef @.str.3)
  br label %64

64:                                               ; preds = %62, %60
  br label %65

65:                                               ; preds = %64, %48
  br label %66

66:                                               ; preds = %65, %36
  br label %67

67:                                               ; preds = %66, %24
  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 %8, !llvm.loop !9

68:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, 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 @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 = !{!"long", !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"

@.str = external hidden unnamed_addr constant [4 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [8 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 i64, align 8
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %7 = load i64, ptr %1, align 8, !tbaa !5
  %8 = add nsw i64 %7, -1
  store i64 %8, ptr %1, align 8, !tbaa !5
  %.not7 = icmp eq i64 %7, 0
  br i1 %.not7, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %0, %28
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = load i64, ptr %4, align 8, !tbaa !5
  %13 = icmp eq i64 %11, %12
  %.pre = load i64, ptr %5, align 8, !tbaa !5
  %.pre8.pre = load i64, ptr %3, align 8, !tbaa !5
  %14 = add nsw i64 %.pre, %.pre8.pre
  %15 = icmp eq i64 %14, %11
  %or.cond10 = select i1 %13, i1 %15, i1 false
  br i1 %or.cond10, label %28, label %16

16:                                               ; preds = %.lr.ph
  %17 = icmp eq i64 %11, %.pre
  %18 = add nsw i64 %.pre8.pre, %12
  %19 = icmp eq i64 %18, %11
  %or.cond12 = select i1 %17, i1 %19, i1 false
  br i1 %or.cond12, label %28, label %20

20:                                               ; preds = %16
  %21 = icmp eq i64 %.pre8.pre, %12
  %22 = add nsw i64 %.pre, %11
  %23 = icmp eq i64 %22, %.pre8.pre
  %or.cond = select i1 %21, i1 %23, i1 false
  br i1 %or.cond, label %28, label %24

24:                                               ; preds = %20
  %25 = icmp eq i64 %.pre8.pre, %.pre
  %26 = add nsw i64 %12, %11
  %27 = icmp eq i64 %26, %.pre8.pre
  %or.cond6 = select i1 %25, i1 %27, i1 false
  %.str.2..str.3 = select i1 %or.cond6, ptr @.str.2, ptr @.str.3
  br label %28

28:                                               ; preds = %24, %20, %16, %.lr.ph
  %.str.2.sink = phi ptr [ @.str.2, %.lr.ph ], [ @.str.2, %16 ], [ @.str.2, %20 ], [ %.str.2..str.3, %24 ]
  %29 = call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.2.sink)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  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
  %30 = load i64, ptr %1, align 8, !tbaa !5
  %31 = add nsw i64 %30, -1
  store i64 %31, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %30, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %28, %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: 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

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"}


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