; LLVM IR from tangjz/acm-icpc :: lydsy (4522)

; 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"

@cnt = external dso_local global i32, align 4
@e = external dso_local global i64, align 8
@n = external dso_local global i64, align 8
@c = external dso_local global i64, align 8
@pp = external dso_local global [16 x i64], align 16
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5exgcdxxRxS_(i64 noundef, i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #0

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z7mod_powxxx(i64 noundef, i64 noundef, i64 noundef) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13decompositionx(i64 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @e, ptr noundef @n, ptr noundef @c)
  %7 = load i64, ptr @n, align 8, !tbaa !5
  call void @_Z13decompositionx(i64 noundef %7)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  %8 = load i64, ptr @n, align 8, !tbaa !5
  store i64 %8, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %23, %0
  %10 = load i32, ptr %3, align 4, !tbaa !9
  %11 = load i32, ptr @cnt, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %26

14:                                               ; preds = %9
  %15 = load i64, ptr %2, align 8, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [16 x i64], ptr @pp, i64 0, i64 %17
  %19 = load i64, ptr %18, align 8, !tbaa !5
  %20 = sdiv i64 %15, %19
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = sub nsw i64 %21, %20
  store i64 %22, ptr %2, align 8, !tbaa !5
  br label %23

23:                                               ; preds = %14
  %24 = load i32, ptr %3, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %3, align 4, !tbaa !9
  br label %9, !llvm.loop !11

26:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #5
  %27 = load i64, ptr @e, align 8, !tbaa !5
  %28 = load i64, ptr %2, align 8, !tbaa !5
  call void @_Z5exgcdxxRxS_(i64 noundef %27, i64 noundef %28, ptr noundef nonnull align 8 dereferenceable(8) %4, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %29 = load i64, ptr %4, align 8, !tbaa !5
  %30 = icmp slt i64 %29, 0
  br i1 %30, label %31, label %35

31:                                               ; preds = %26
  %32 = load i64, ptr %2, align 8, !tbaa !5
  %33 = load i64, ptr %4, align 8, !tbaa !5
  %34 = add nsw i64 %33, %32
  store i64 %34, ptr %4, align 8, !tbaa !5
  br label %35

35:                                               ; preds = %31, %26
  %36 = load i64, ptr %4, align 8, !tbaa !5
  %37 = load i64, ptr @c, align 8, !tbaa !5
  %38 = load i64, ptr %4, align 8, !tbaa !5
  %39 = load i64, ptr @n, align 8, !tbaa !5
  %40 = call noundef i64 @_Z7mod_powxxx(i64 noundef %37, i64 noundef %38, i64 noundef %39)
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %36, i64 noundef %40)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #4

declare i32 @printf(ptr noundef, ...) #4

attributes #0 = { mustprogress 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 = { mustprogress 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 #3 = { 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 #4 = { "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 #5 = { 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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

@cnt = external dso_local local_unnamed_addr global i32, align 4
@e = external dso_local global i64, align 8
@n = external dso_local global i64, align 8
@c = external dso_local global i64, align 8
@pp = external dso_local local_unnamed_addr global [16 x i64], align 16
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5exgcdxxRxS_(i64 noundef, i64 noundef, ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z7mod_powxxx(i64 noundef, i64 noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z13decompositionx(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  %3 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @e, ptr noundef nonnull @n, ptr noundef nonnull @c)
  %4 = load i64, ptr @n, align 8, !tbaa !5
  tail call void @_Z13decompositionx(i64 noundef %4)
  %5 = load i64, ptr @n, align 8, !tbaa !5
  %6 = load i32, ptr @cnt, align 4, !tbaa !9
  %7 = icmp sgt i32 %6, 0
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %0
  %wide.trip.count = zext nneg i32 %6 to i64
  %xtraiter = and i64 %wide.trip.count, 1
  %8 = icmp eq i32 %6, 1
  br i1 %8, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi i64 [ poison, %.lr.ph.preheader ], [ %23, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.1, %.lr.ph ]
  %.079.unr = phi i64 [ %5, %.lr.ph.preheader ], [ %23, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %9 = getelementptr inbounds [16 x i64], ptr @pp, i64 0, i64 %indvars.iv.unr
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = sdiv i64 %.079.unr, %10
  %12 = sub nsw i64 %.079.unr, %11
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %0
  %.07.lcssa = phi i64 [ %5, %0 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %12, %.lr.ph.epil ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #5
  %13 = load i64, ptr @e, align 8, !tbaa !5
  call void @_Z5exgcdxxRxS_(i64 noundef %13, i64 noundef %.07.lcssa, ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef nonnull align 8 dereferenceable(8) %2)
  %14 = load i64, ptr %1, align 8, !tbaa !5
  %15 = icmp slt i64 %14, 0
  br i1 %15, label %24, label %26

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.1, %.lr.ph ]
  %.079 = phi i64 [ %5, %.lr.ph.preheader.new ], [ %23, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %16 = getelementptr inbounds [16 x i64], ptr @pp, i64 0, i64 %indvars.iv
  %17 = load i64, ptr %16, align 16, !tbaa !5
  %18 = sdiv i64 %.079, %17
  %19 = sub nsw i64 %.079, %18
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %20 = getelementptr inbounds [16 x i64], ptr @pp, i64 0, i64 %indvars.iv.next
  %21 = load i64, ptr %20, align 8, !tbaa !5
  %22 = sdiv i64 %19, %21
  %23 = sub nsw i64 %19, %22
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11

24:                                               ; preds = %._crit_edge
  %25 = add nsw i64 %14, %.07.lcssa
  store i64 %25, ptr %1, align 8, !tbaa !5
  br label %26

26:                                               ; preds = %24, %._crit_edge
  %27 = phi i64 [ %25, %24 ], [ %14, %._crit_edge ]
  %28 = load i64, ptr @c, align 8, !tbaa !5
  %29 = load i64, ptr @n, align 8, !tbaa !5
  %30 = call noundef i64 @_Z7mod_powxxx(i64 noundef %28, i64 noundef %27, i64 noundef %29)
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %27, i64 noundef %30)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

attributes #0 = { mustprogress 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 = { mustprogress 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 #3 = { 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 #4 = { 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 #5 = { 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 long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass