; LLVM IR from Tunghohin/Competitive_Coding :: Codeforces/cf1744_B.ll (Z5solvev)

; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  %11 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %12 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef nonnull align 4 dereferenceable(4) %2)
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  store i64 0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  store i64 0, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  store i64 0, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 1, ptr %6, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %33, %0
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = load i32, ptr %1, align 4, !tbaa !9
  %16 = icmp sle i32 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %36

18:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %7)
  %20 = load i64, ptr %7, align 8, !tbaa !5
  %21 = load i64, ptr %3, align 8, !tbaa !5
  %22 = add nsw i64 %21, %20
  store i64 %22, ptr %3, align 8, !tbaa !5
  %23 = load i64, ptr %7, align 8, !tbaa !5
  %24 = srem i64 %23, 2
  %25 = icmp eq i64 %24, 0
  br i1 %25, label %26, label %29

26:                                               ; preds = %18
  %27 = load i64, ptr %5, align 8, !tbaa !5
  %28 = add nsw i64 %27, 1
  store i64 %28, ptr %5, align 8, !tbaa !5
  br label %32

29:                                               ; preds = %18
  %30 = load i64, ptr %4, align 8, !tbaa !5
  %31 = add nsw i64 %30, 1
  store i64 %31, ptr %4, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %29, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  br label %33

33:                                               ; preds = %32
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %6, align 4, !tbaa !9
  br label %13, !llvm.loop !11

36:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 1, ptr %8, align 4, !tbaa !9
  br label %37

37:                                               ; preds = %79, %36
  %38 = load i32, ptr %8, align 4, !tbaa !9
  %39 = load i32, ptr %2, align 4, !tbaa !9
  %40 = icmp sle i32 %38, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %82

42:                                               ; preds = %37
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %43 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %44 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %43, ptr noundef nonnull align 8 dereferenceable(8) %10)
  %45 = load i32, ptr %9, align 4, !tbaa !9
  %46 = icmp eq i32 %45, 0
  br i1 %46, label %47, label %61

47:                                               ; preds = %42
  %48 = load i64, ptr %5, align 8, !tbaa !5
  %49 = load i64, ptr %10, align 8, !tbaa !5
  %50 = mul nsw i64 %48, %49
  %51 = load i64, ptr %3, align 8, !tbaa !5
  %52 = add nsw i64 %51, %50
  store i64 %52, ptr %3, align 8, !tbaa !5
  %53 = load i64, ptr %10, align 8, !tbaa !5
  %54 = srem i64 %53, 2
  %55 = icmp eq i64 %54, 1
  br i1 %55, label %56, label %60

56:                                               ; preds = %47
  %57 = load i64, ptr %5, align 8, !tbaa !5
  %58 = load i64, ptr %4, align 8, !tbaa !5
  %59 = add nsw i64 %58, %57
  store i64 %59, ptr %4, align 8, !tbaa !5
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %60

60:                                               ; preds = %56, %47
  br label %75

61:                                               ; preds = %42
  %62 = load i64, ptr %4, align 8, !tbaa !5
  %63 = load i64, ptr %10, align 8, !tbaa !5
  %64 = mul nsw i64 %62, %63
  %65 = load i64, ptr %3, align 8, !tbaa !5
  %66 = add nsw i64 %65, %64
  store i64 %66, ptr %3, align 8, !tbaa !5
  %67 = load i64, ptr %10, align 8, !tbaa !5
  %68 = srem i64 %67, 2
  %69 = icmp eq i64 %68, 1
  br i1 %69, label %70, label %74

70:                                               ; preds = %61
  %71 = load i64, ptr %4, align 8, !tbaa !5
  %72 = load i64, ptr %5, align 8, !tbaa !5
  %73 = add nsw i64 %72, %71
  store i64 %73, ptr %5, align 8, !tbaa !5
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %74

74:                                               ; preds = %70, %61
  br label %75

75:                                               ; preds = %74, %60
  %76 = load i64, ptr %3, align 8, !tbaa !5
  %77 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %76)
  %78 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %77, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %79

79:                                               ; preds = %75
  %80 = load i32, ptr %8, align 4, !tbaa !9
  %81 = add nsw i32 %80, 1
  store i32 %81, ptr %8, align 4, !tbaa !9
  br label %37, !llvm.loop !13

82:                                               ; preds = %41
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #4
  ret void
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #0 align 2

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 = { "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 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 = !{!"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"}
!13 = distinct !{!13, !12}


; 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"

%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5solvev() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %6 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  %7 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) %6, ptr noundef nonnull align 4 dereferenceable(4) %2)
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %.not29 = icmp slt i32 %8, 1
  br i1 %.not29, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %0
  %.022.lcssa = phi i64 [ 0, %0 ], [ %12, %.lr.ph ]
  %.018.lcssa = phi i64 [ 0, %0 ], [ %.119, %.lr.ph ]
  %.017.lcssa = phi i64 [ 0, %0 ], [ %.1, %.lr.ph ]
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %.not2536 = icmp slt i32 %9, 1
  br i1 %.not2536, label %._crit_edge, label %.lr.ph41

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.01633 = phi i32 [ %15, %.lr.ph ], [ 1, %0 ]
  %.01732 = phi i64 [ %.1, %.lr.ph ], [ 0, %0 ]
  %.01831 = phi i64 [ %.119, %.lr.ph ], [ 0, %0 ]
  %.02230 = phi i64 [ %12, %.lr.ph ], [ 0, %0 ]
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #4
  %10 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(8) %3)
  %11 = load i64, ptr %3, align 8, !tbaa !9
  %12 = add nsw i64 %11, %.02230
  %13 = and i64 %11, 1
  %.119 = add i64 %13, %.01831
  %14 = xor i64 %13, 1
  %.1 = add i64 %14, %.01732
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #4
  %15 = add nuw nsw i32 %.01633, 1
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.01633, %16
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !11

._crit_edge:                                      ; preds = %28, %.preheader
  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 void

.lr.ph41:                                         ; preds = %.preheader, %28
  %.040 = phi i32 [ %31, %28 ], [ 1, %.preheader ]
  %.239 = phi i64 [ %.3, %28 ], [ %.017.lcssa, %.preheader ]
  %.22038 = phi i64 [ %.321, %28 ], [ %.018.lcssa, %.preheader ]
  %.12337 = phi i64 [ %.224, %28 ], [ %.022.lcssa, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %17 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %18 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16) %17, ptr noundef nonnull align 8 dereferenceable(8) %5)
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = icmp eq i32 %19, 0
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = and i64 %21, -9223372036854775807
  %23 = icmp eq i64 %22, 1
  br i1 %20, label %24, label %26

24:                                               ; preds = %.lr.ph41
  %25 = select i1 %23, i64 %.239, i64 0
  %spec.select = add nsw i64 %25, %.22038
  %spec.select26 = select i1 %23, i64 0, i64 %.239
  br label %28

26:                                               ; preds = %.lr.ph41
  %spec.select27 = select i1 %23, i64 0, i64 %.22038
  %27 = select i1 %23, i64 %.22038, i64 0
  %spec.select28 = add nsw i64 %27, %.239
  br label %28

28:                                               ; preds = %26, %24
  %.239.pn = phi i64 [ %.239, %24 ], [ %.22038, %26 ]
  %.321 = phi i64 [ %spec.select, %24 ], [ %spec.select27, %26 ]
  %.3 = phi i64 [ %spec.select26, %24 ], [ %spec.select28, %26 ]
  %.pn = mul nsw i64 %21, %.239.pn
  %.224 = add nsw i64 %.pn, %.12337
  %29 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, i64 noundef %.224)
  %30 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8) %29, i8 noundef signext 10)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  %31 = add nuw nsw i32 %.040, 1
  %32 = load i32, ptr %2, align 4, !tbaa !5
  %.not25.not = icmp slt i32 %.040, %32
  br i1 %.not25.not, label %.lr.ph41, label %._crit_edge, !llvm.loop !13
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERx(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c(ptr noundef nonnull align 8 dereferenceable(8), i8 noundef signext) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEx(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #0 align 2

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 = { "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 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 = !{!10, !10, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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