; LLVM IR from tangjz/acm-icpc :: codeforces/complete (314A)

; 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"

@n = external dso_local global i32, align 4
@now = external dso_local global i32, align 4
@tot = external dso_local global i32, align 4
@k = external dso_local global i64, align 8
@a = external dso_local global i64, align 8
@sum = external dso_local global i64, align 8
@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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 @n, ptr noundef @k)
  %4 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %4, ptr @tot, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %43, %0
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp sle i32 %6, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %46

10:                                               ; preds = %5
  %11 = load i32, ptr @now, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr @now, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef @a)
  %14 = load i64, ptr @sum, align 8, !tbaa !9
  %15 = load i32, ptr @now, align 4, !tbaa !5
  %16 = sub nsw i32 %15, 1
  %17 = load i32, ptr @tot, align 4, !tbaa !5
  %18 = load i32, ptr @now, align 4, !tbaa !5
  %19 = sub nsw i32 %17, %18
  %20 = mul nsw i32 %16, %19
  %21 = sext i32 %20 to i64
  %22 = load i64, ptr @a, align 8, !tbaa !9
  %23 = mul nsw i64 %21, %22
  %24 = sub nsw i64 %14, %23
  %25 = load i64, ptr @k, align 8, !tbaa !9
  %26 = icmp slt i64 %24, %25
  br i1 %26, label %27, label %34

27:                                               ; preds = %10
  %28 = load i32, ptr %2, align 4, !tbaa !5
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %28)
  %30 = load i32, ptr @now, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr @now, align 4, !tbaa !5
  %32 = load i32, ptr @tot, align 4, !tbaa !5
  %33 = add nsw i32 %32, -1
  store i32 %33, ptr @tot, align 4, !tbaa !5
  br label %42

34:                                               ; preds = %10
  %35 = load i32, ptr @now, align 4, !tbaa !5
  %36 = sub nsw i32 %35, 1
  %37 = sext i32 %36 to i64
  %38 = load i64, ptr @a, align 8, !tbaa !9
  %39 = mul nsw i64 %37, %38
  %40 = load i64, ptr @sum, align 8, !tbaa !9
  %41 = add nsw i64 %40, %39
  store i64 %41, ptr @sum, align 8, !tbaa !9
  br label %42

42:                                               ; preds = %34, %27
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %2, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %2, align 4, !tbaa !5
  br label %5, !llvm.loop !11

46:                                               ; preds = %9
  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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@n = external dso_local global i32, align 4
@now = external dso_local local_unnamed_addr global i32, align 4
@tot = external dso_local local_unnamed_addr global i32, align 4
@k = external dso_local global i64, align 8
@a = external dso_local global i64, align 8
@sum = external dso_local local_unnamed_addr global i64, align 8
@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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 @n, ptr noundef nonnull @k)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %2, ptr @tot, align 4, !tbaa !5
  %.not3 = icmp slt i32 %2, 1
  br i1 %.not3, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %0
  %.pre = load i32, ptr @now, align 4, !tbaa !5
  br label %.lr.ph

._crit_edge:                                      ; preds = %28, %0
  ret i32 0

.lr.ph:                                           ; preds = %.lr.ph.preheader, %28
  %3 = phi i32 [ %29, %28 ], [ %.pre, %.lr.ph.preheader ]
  %.04 = phi i32 [ %30, %28 ], [ 1, %.lr.ph.preheader ]
  %4 = add nsw i32 %3, 1
  store i32 %4, ptr @now, align 4, !tbaa !5
  %5 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull @a)
  %6 = load i64, ptr @sum, align 8, !tbaa !9
  %7 = load i32, ptr @now, align 4, !tbaa !5
  %8 = add nsw i32 %7, -1
  %9 = load i32, ptr @tot, align 4, !tbaa !5
  %10 = sub nsw i32 %9, %7
  %11 = mul nsw i32 %10, %8
  %12 = sext i32 %11 to i64
  %13 = load i64, ptr @a, align 8, !tbaa !9
  %14 = mul nsw i64 %13, %12
  %15 = sub nsw i64 %6, %14
  %16 = load i64, ptr @k, align 8, !tbaa !9
  %17 = icmp slt i64 %15, %16
  br i1 %17, label %18, label %24

18:                                               ; preds = %.lr.ph
  %19 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.04)
  %20 = load i32, ptr @now, align 4, !tbaa !5
  %21 = add nsw i32 %20, -1
  store i32 %21, ptr @now, align 4, !tbaa !5
  %22 = load i32, ptr @tot, align 4, !tbaa !5
  %23 = add nsw i32 %22, -1
  store i32 %23, ptr @tot, align 4, !tbaa !5
  br label %28

24:                                               ; preds = %.lr.ph
  %25 = sext i32 %8 to i64
  %26 = mul nsw i64 %13, %25
  %27 = add nsw i64 %26, %6
  store i64 %27, ptr @sum, align 8, !tbaa !9
  br label %28

28:                                               ; preds = %18, %24
  %29 = phi i32 [ %21, %18 ], [ %7, %24 ]
  %30 = add nuw nsw i32 %.04, 1
  %31 = load i32, ptr @n, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.04, %31
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; 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

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" }

!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 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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