; LLVM IR from tangjz/acm-icpc :: lydsy (2999)

; 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"

%struct.Info = type { i32, i32 }

@msk = external dso_local global [11 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_Z5solvei(i32 noundef) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %struct.Info, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %16, %0
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 10
  br i1 %7, label %9, label %8

8:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %19

9:                                                ; preds = %5
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = sub nsw i32 %10, 1
  %12 = shl i32 1, %11
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [11 x i32], ptr @msk, i64 0, i64 %14
  store i32 %12, ptr %15, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %9
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %2, align 4, !tbaa !5
  br label %5, !llvm.loop !9

19:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  br label %20

20:                                               ; preds = %37, %19
  %21 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %22 = icmp eq i32 %21, 1
  br i1 %22, label %23, label %38

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = call i64 @_Z5solvei(i32 noundef %24)
  store i64 %25, ptr %4, align 4
  %26 = getelementptr inbounds %struct.Info, ptr %4, i32 0, i32 0
  %27 = load i32, ptr %26, align 4, !tbaa !11
  %28 = icmp slt i32 %27, 1061109567
  br i1 %28, label %29, label %35

29:                                               ; preds = %23
  %30 = getelementptr inbounds %struct.Info, ptr %4, i32 0, i32 0
  %31 = load i32, ptr %30, align 4, !tbaa !11
  %32 = getelementptr inbounds %struct.Info, ptr %4, i32 0, i32 1
  %33 = load i32, ptr %32, align 4, !tbaa !13
  %34 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %31, i32 noundef %33)
  br label %37

35:                                               ; preds = %23
  %36 = call i32 @puts(ptr noundef @.str.2)
  br label %37

37:                                               ; preds = %35, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  br label %20, !llvm.loop !14

38:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @printf(ptr noundef, ...) #3

declare i32 @puts(ptr noundef) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { "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 = !{!12, !6, i64 0}
!12 = !{!"_ZTS4Info", !6, i64 0, !6, i64 4}
!13 = !{!12, !6, i64 4}
!14 = distinct !{!14, !10}


; 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"

@msk = external dso_local local_unnamed_addr global [11 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_Z5solvei(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i32, align 4
  store <4 x i32> <i32 1, i32 2, i32 4, i32 8>, ptr getelementptr inbounds (i8, ptr @msk, i64 4), align 4, !tbaa !5
  store <4 x i32> <i32 16, i32 32, i32 64, i32 128>, ptr getelementptr inbounds (i8, ptr @msk, i64 20), align 4, !tbaa !5
  store i32 256, ptr getelementptr inbounds (i8, ptr @msk, i64 36), align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %3 = icmp eq i32 %2, 1
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %11
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = call i64 @_Z5solvei(i32 noundef %4)
  %.sroa.0.0.extract.trunc = trunc i64 %5 to i32
  %6 = icmp slt i32 %.sroa.0.0.extract.trunc, 1061109567
  br i1 %6, label %7, label %9

7:                                                ; preds = %.lr.ph
  %.sroa.5.0.extract.shift = lshr i64 %5, 32
  %.sroa.5.0.extract.trunc = trunc nuw i64 %.sroa.5.0.extract.shift to i32
  %8 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %.sroa.0.0.extract.trunc, i32 noundef %.sroa.5.0.extract.trunc)
  br label %11

9:                                                ; preds = %.lr.ph
  %10 = call i32 @puts(ptr noundef nonnull dereferenceable(1) @.str.2)
  br label %11

11:                                               ; preds = %9, %7
  %12 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %13 = icmp eq i32 %12, 1
  br i1 %13, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %11, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @puts(ptr nocapture noundef readonly) local_unnamed_addr #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 #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"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass