; LLVM IR from tangjz/acm-icpc :: lydsy (1234)

; 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 [9 x i8], align 1
@.str.1 = 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
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca [10001 x i8], align 16
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 10001, ptr %5) #4
  %10 = getelementptr inbounds [10001 x i8], ptr %5, i64 0, i64 0
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3, ptr noundef %4, ptr noundef %10)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %15, %0
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = icmp sgt i32 %13, 0
  br i1 %14, label %15, label %46

15:                                               ; preds = %12
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = icmp ne i32 %16, 0
  %18 = xor i1 %17, true
  %19 = zext i1 %18 to i32
  %20 = load i32, ptr %7, align 4, !tbaa !5
  %21 = add nsw i32 %20, %19
  store i32 %21, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = add nsw i32 %22, %23
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = sub nsw i32 %24, %25
  %27 = sub nsw i32 %26, 1
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  %30 = sdiv i32 %27, %29
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %9, align 4, !tbaa !5
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %33 = load i32, ptr %32, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  store i32 %33, ptr %8, align 4, !tbaa !5
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = load i32, ptr %4, align 4, !tbaa !5
  %36 = sub nsw i32 %35, %34
  store i32 %36, ptr %4, align 4, !tbaa !5
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = load i32, ptr %8, align 4, !tbaa !5
  %39 = load i32, ptr %3, align 4, !tbaa !5
  %40 = mul nsw i32 %38, %39
  %41 = add nsw i32 %37, %40
  %42 = load i32, ptr %2, align 4, !tbaa !5
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = add nsw i32 %42, %43
  %45 = srem i32 %41, %44
  store i32 %45, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %12, !llvm.loop !9

46:                                               ; preds = %12
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [10001 x i8], ptr %5, i64 0, i64 %48
  %50 = load i8, ptr %49, align 1, !tbaa !11
  %51 = sext i8 %50 to i32
  %52 = sub nsw i32 %51, 65
  %53 = load i32, ptr %7, align 4, !tbaa !5
  %54 = add nsw i32 %52, %53
  %55 = srem i32 %54, 26
  %56 = add nsw i32 %55, 65
  %57 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %56)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 10001, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  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

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; 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 = { inlinehint 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!7, !7, i64 0}


; 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 [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [10001 x i8], align 16
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 10001, ptr nonnull %4) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %0
  %.pre = load i32, ptr %1, align 4, !tbaa !5
  %.pre13 = load i32, ptr %2, align 4, !tbaa !5
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %9 = phi i32 [ %24, %.lr.ph ], [ %.pre13, %.lr.ph.preheader ]
  %10 = phi i32 [ %27, %.lr.ph ], [ %.pre, %.lr.ph.preheader ]
  %11 = phi i32 [ %23, %.lr.ph ], [ %7, %.lr.ph.preheader ]
  %.010 = phi i32 [ %29, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %.089 = phi i32 [ %13, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %.not = icmp eq i32 %.010, 0
  %12 = zext i1 %.not to i32
  %13 = add nuw nsw i32 %.089, %12
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  %14 = xor i32 %.010, -1
  %15 = add i32 %11, %14
  %16 = add i32 %15, %10
  %17 = add nsw i32 %9, 1
  %18 = sdiv i32 %16, %17
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %5, align 4, !tbaa !5
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %21 = load i32, ptr %20, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = sub nsw i32 %22, %21
  store i32 %23, ptr %3, align 4, !tbaa !5
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = mul nsw i32 %24, %21
  %26 = add nsw i32 %25, %.010
  %27 = load i32, ptr %1, align 4, !tbaa !5
  %28 = add nsw i32 %27, %23
  %29 = srem i32 %26, %28
  %30 = icmp sgt i32 %23, 0
  br i1 %30, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %.lr.ph
  %31 = sext i32 %29 to i64
  %32 = add nsw i32 %13, -65
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %0
  %.08.lcssa = phi i32 [ -65, %0 ], [ %32, %._crit_edge.loopexit ]
  %.0.lcssa = phi i64 [ 0, %0 ], [ %31, %._crit_edge.loopexit ]
  %33 = getelementptr inbounds [10001 x i8], ptr %4, i64 0, i64 %.0.lcssa
  %34 = load i8, ptr %33, align 1, !tbaa !11
  %35 = sext i8 %34 to i32
  %36 = add i32 %.08.lcssa, %35
  %37 = srem i32 %36, 26
  %38 = add nsw i32 %37, 65
  %39 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %38)
  call void @llvm.lifetime.end.p0(i64 10001, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, 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: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; 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

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


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