; LLVM IR from tangjz/acm-icpc :: codeforces/gym (101471E)

; 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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@a = external dso_local global [1001 x i32], align 16
@b = external dso_local global [1001 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 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 x86_fp80, align 16
  %4 = alloca x86_fp80, align 16
  %5 = alloca x86_fp80, align 16
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @m)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %21, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %24

13:                                               ; preds = %8
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr @a, i64 %15
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr @b, i64 %18
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %16, ptr noundef %19)
  br label %21

21:                                               ; preds = %13
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %2, align 4, !tbaa !5
  br label %8, !llvm.loop !9

24:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 16, ptr %3) #5
  store x86_fp80 0xKC008FA00000000000000, ptr %3, align 16, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 16, ptr %4) #5
  store x86_fp80 0xK40169896800000000000, ptr %4, align 16, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 16, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %43, %24
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = icmp slt i32 %26, 101
  br i1 %27, label %29, label %28

28:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #5
  br label %46

29:                                               ; preds = %25
  %30 = load x86_fp80, ptr %4, align 16, !tbaa !11
  %31 = load x86_fp80, ptr %4, align 16, !tbaa !11
  %32 = load x86_fp80, ptr %3, align 16, !tbaa !11
  %33 = fsub x86_fp80 %31, %32
  %34 = fneg x86_fp80 %33
  %35 = call x86_fp80 @llvm.fmuladd.f80(x86_fp80 %34, x86_fp80 0xK3FFE8000000000000000, x86_fp80 %30)
  store x86_fp80 %35, ptr %5, align 16, !tbaa !11
  %36 = load x86_fp80, ptr %5, align 16, !tbaa !11
  %37 = call noundef zeroext i1 @_Z5checke(x86_fp80 noundef %36)
  br i1 %37, label %38, label %40

38:                                               ; preds = %29
  %39 = load x86_fp80, ptr %5, align 16, !tbaa !11
  store x86_fp80 %39, ptr %4, align 16, !tbaa !11
  br label %42

40:                                               ; preds = %29
  %41 = load x86_fp80, ptr %5, align 16, !tbaa !11
  store x86_fp80 %41, ptr %3, align 16, !tbaa !11
  br label %42

42:                                               ; preds = %40, %38
  br label %43

43:                                               ; preds = %42
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %6, align 4, !tbaa !5
  br label %25, !llvm.loop !13

46:                                               ; preds = %28
  %47 = load x86_fp80, ptr %4, align 16, !tbaa !11
  %48 = fptrunc x86_fp80 %47 to double
  %49 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, double noundef %48)
  call void @llvm.lifetime.end.p0(i64 16, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %3) #5
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare x86_fp80 @llvm.fmuladd.f80(x86_fp80, x86_fp80, x86_fp80) #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checke(x86_fp80 noundef) #4

declare i32 @printf(ptr noundef, ...) #1

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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"long double", !7, i64 0}
!13 = distinct !{!13, !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"

@n = external dso_local global i32, align 4
@m = external dso_local global i32, align 4
@a = external dso_local global [1001 x i32], align 16
@b = external dso_local global [1001 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %.preheader.preheader

.preheader.preheader:                             ; preds = %.lr.ph, %0
  br label %.preheader

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds i32, ptr @a, i64 %indvars.iv
  %5 = getelementptr inbounds i32, ptr @b, i64 %indvars.iv
  %6 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = icmp slt i64 %indvars.iv.next, %8
  br i1 %9, label %.lr.ph, label %.preheader.preheader, !llvm.loop !9

10:                                               ; preds = %.preheader
  %11 = fptrunc x86_fp80 %..014 to double
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, double noundef %11)
  ret i32 0

.preheader:                                       ; preds = %.preheader.preheader, %.preheader
  %.019 = phi i32 [ %17, %.preheader ], [ 0, %.preheader.preheader ]
  %.01318 = phi x86_fp80 [ %.013., %.preheader ], [ 0xKC008FA00000000000000, %.preheader.preheader ]
  %.01417 = phi x86_fp80 [ %..014, %.preheader ], [ 0xK40169896800000000000, %.preheader.preheader ]
  %13 = fsub x86_fp80 %.01417, %.01318
  %14 = fneg x86_fp80 %13
  %15 = tail call x86_fp80 @llvm.fmuladd.f80(x86_fp80 %14, x86_fp80 0xK3FFE8000000000000000, x86_fp80 %.01417)
  %16 = tail call noundef zeroext i1 @_Z5checke(x86_fp80 noundef %15)
  %..014 = select i1 %16, x86_fp80 %15, x86_fp80 %.01417
  %.013. = select i1 %16, x86_fp80 %.01318, x86_fp80 %15
  %17 = add nuw nsw i32 %.019, 1
  %exitcond.not = icmp eq i32 %17, 101
  br i1 %exitcond.not, label %10, label %.preheader, !llvm.loop !11
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare x86_fp80 @llvm.fmuladd.f80(x86_fp80, x86_fp80, x86_fp80) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_Z5checke(x86_fp80 noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

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 = { 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 #2 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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" }

!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}


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