; LLVM IR from tangjz/acm-icpc :: lydsy (1436)

; 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"

@c = external dso_local global [3 x [3 x i32]], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z1Cxx(i64 noundef, i64 noundef) #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 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 i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %69, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 3
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %72

13:                                               ; preds = %9
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %15
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [3 x i32], ptr %16, i64 0, i64 %18
  store i32 1, ptr %19, align 4, !tbaa !5
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %21
  %23 = getelementptr inbounds [3 x i32], ptr %22, i64 0, i64 0
  store i32 1, ptr %23, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %65, %13
  %25 = load i32, ptr %4, align 4, !tbaa !5
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %29, label %28

28:                                               ; preds = %24
  store i32 5, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %68

29:                                               ; preds = %24
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = sub nsw i32 %30, 1
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %32
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = sub nsw i32 %34, 1
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [3 x i32], ptr %33, i64 0, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = load i32, ptr %2, align 4, !tbaa !5
  %40 = sub nsw i32 %39, 1
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [3 x i32], ptr %42, i64 0, i64 %44
  %46 = load i32, ptr %45, align 4, !tbaa !5
  %47 = add nsw i32 %38, %46
  %48 = load i32, ptr %2, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %49
  %51 = load i32, ptr %4, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [3 x i32], ptr %50, i64 0, i64 %52
  store i32 %47, ptr %53, align 4, !tbaa !5
  %54 = icmp sge i32 %47, 3
  br i1 %54, label %55, label %64

55:                                               ; preds = %29
  %56 = load i32, ptr %2, align 4, !tbaa !5
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds [3 x [3 x i32]], ptr @c, i64 0, i64 %57
  %59 = load i32, ptr %4, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds [3 x i32], ptr %58, i64 0, i64 %60
  %62 = load i32, ptr %61, align 4, !tbaa !5
  %63 = sub nsw i32 %62, 3
  store i32 %63, ptr %61, align 4, !tbaa !5
  br label %64

64:                                               ; preds = %55, %29
  br label %65

65:                                               ; preds = %64
  %66 = load i32, ptr %4, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %4, align 4, !tbaa !5
  br label %24, !llvm.loop !9

68:                                               ; preds = %28
  br label %69

69:                                               ; preds = %68
  %70 = load i32, ptr %2, align 4, !tbaa !5
  %71 = add nsw i32 %70, 1
  store i32 %71, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !11

72:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %73 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5)
  br label %74

74:                                               ; preds = %93, %72
  %75 = load i32, ptr %5, align 4, !tbaa !5
  %76 = add nsw i32 %75, -1
  store i32 %76, ptr %5, align 4, !tbaa !5
  %77 = icmp ne i32 %75, 0
  br i1 %77, label %78, label %96

78:                                               ; preds = %74
  %79 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %6, ptr noundef %7)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %80 = load i64, ptr %6, align 8, !tbaa !12
  %81 = shl i64 %80, 1
  %82 = load i64, ptr %7, align 8, !tbaa !12
  %83 = call noundef i32 @_Z1Cxx(i64 noundef %81, i64 noundef %82)
  store i32 %83, ptr %8, align 4, !tbaa !5
  %84 = load i64, ptr %7, align 8, !tbaa !12
  %85 = and i64 %84, 1
  %86 = icmp ne i64 %85, 0
  br i1 %86, label %87, label %93

87:                                               ; preds = %78
  %88 = load i32, ptr %8, align 4, !tbaa !5
  %89 = icmp ne i32 %88, 0
  br i1 %89, label %90, label %93

90:                                               ; preds = %87
  %91 = load i32, ptr %8, align 4, !tbaa !5
  %92 = sub nsw i32 3, %91
  store i32 %92, ptr %8, align 4, !tbaa !5
  br label %93

93:                                               ; preds = %90, %87, %78
  %94 = load i32, ptr %8, align 4, !tbaa !5
  %95 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %94)
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %74, !llvm.loop !14

96:                                               ; preds = %74
  store i32 0, ptr %1, align 4
  store i32 1, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  %97 = load i32, ptr %1, align 4
  ret i32 %97
}

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

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = distinct !{!11, !10}
!12 = !{!13, !13, i64 0}
!13 = !{!"long long", !7, i64 0}
!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"

@c = external dso_local local_unnamed_addr global [3 x [3 x i32]], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z1Cxx(i64 noundef, i64 noundef) 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 norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  store i32 1, ptr @c, align 16, !tbaa !5
  store i32 1, ptr getelementptr inbounds (i8, ptr @c, i64 16), align 16, !tbaa !5
  store i32 1, ptr getelementptr inbounds (i8, ptr @c, i64 12), align 4, !tbaa !5
  store i32 1, ptr getelementptr inbounds (i8, ptr @c, i64 32), align 16, !tbaa !5
  store i32 1, ptr getelementptr inbounds (i8, ptr @c, i64 24), align 8, !tbaa !5
  store i32 2, ptr getelementptr inbounds (i8, ptr @c, i64 28), align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = add nsw i32 %5, -1
  store i32 %6, ptr %1, align 4, !tbaa !5
  %.not28 = icmp eq i32 %5, 0
  br i1 %.not28, label %._crit_edge, label %.lr.ph29

.lr.ph29:                                         ; preds = %0, %.lr.ph29
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %8 = load i64, ptr %2, align 8, !tbaa !9
  %9 = shl i64 %8, 1
  %10 = load i64, ptr %3, align 8, !tbaa !9
  %11 = call noundef i32 @_Z1Cxx(i64 noundef %9, i64 noundef %10)
  %12 = load i64, ptr %3, align 8, !tbaa !9
  %13 = and i64 %12, 1
  %14 = icmp ne i64 %13, 0
  %15 = icmp ne i32 %11, 0
  %or.cond = and i1 %15, %14
  %16 = sub nsw i32 3, %11
  %spec.select25 = select i1 %or.cond, i32 %16, i32 %11
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %spec.select25)
  %18 = load i32, ptr %1, align 4, !tbaa !5
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %18, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph29, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph29, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  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

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass