; LLVM IR from tangjz/acm-icpc :: codeforces (887B)

; 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
@a = external dso_local global [3 x [7 x i32]], align 16
@ord = external dso_local global [3 x i32], align 4
@vis = external dso_local global [1001 x i8], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 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
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %34, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  store i32 2, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  br label %37

12:                                               ; preds = %7
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [3 x i32], ptr @ord, i64 0, i64 %15
  store i32 %13, ptr %16, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %30, %12
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = icmp slt i32 %18, 6
  br i1 %19, label %21, label %20

20:                                               ; preds = %17
  store i32 5, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %33

21:                                               ; preds = %17
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [3 x [7 x i32]], ptr @a, i64 0, i64 %23
  %25 = getelementptr inbounds [7 x i32], ptr %24, i64 0, i64 0
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %28)
  br label %30

30:                                               ; preds = %21
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %4, align 4, !tbaa !5
  br label %17, !llvm.loop !9

33:                                               ; preds = %20
  br label %34

34:                                               ; preds = %33
  %35 = load i32, ptr %2, align 4, !tbaa !5
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %2, align 4, !tbaa !5
  br label %7, !llvm.loop !11

37:                                               ; preds = %11
  br label %38

38:                                               ; preds = %39, %37
  call void @_Z3dfsii(i32 noundef 0, i32 noundef 0)
  br label %39

39:                                               ; preds = %38
  %40 = load i32, ptr @n, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i32, ptr @ord, i64 %41
  %43 = call noundef zeroext i1 @_ZSt16next_permutationIPiEbT_S1_(ptr noundef @ord, ptr noundef %42)
  br i1 %43, label %38, label %44, !llvm.loop !12

44:                                               ; preds = %39
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 1, ptr %5, align 4, !tbaa !5
  br label %45

45:                                               ; preds = %56, %44
  %46 = load i32, ptr %5, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [1001 x i8], ptr @vis, i64 0, i64 %47
  %49 = load i8, ptr %48, align 1, !tbaa !13, !range !15, !noundef !16
  %50 = trunc i8 %49 to i1
  br i1 %50, label %55, label %51

51:                                               ; preds = %45
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = sub nsw i32 %52, 1
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %53)
  store i32 10, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %59

55:                                               ; preds = %45
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %5, align 4, !tbaa !5
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %5, align 4, !tbaa !5
  br label %45, !llvm.loop !17

59:                                               ; preds = %51
  ret i32 0
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZSt16next_permutationIPiEbT_S1_(ptr noundef, ptr noundef) #4

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

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 = { 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 = { 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 = distinct !{!11, !10}
!12 = distinct !{!12, !10}
!13 = !{!14, !14, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = distinct !{!17, !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
@a = external dso_local global [3 x [7 x i32]], align 16
@ord = external dso_local global [3 x i32], align 4
@vis = external dso_local local_unnamed_addr global [1001 x i8], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3dfsii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %.preheader13.preheader

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %4 = getelementptr inbounds [3 x i32], ptr @ord, i64 0, i64 %indvars.iv
  %5 = trunc nuw nsw i64 %indvars.iv to i32
  store i32 %5, ptr %4, align 4, !tbaa !5
  %6 = getelementptr inbounds [3 x [7 x i32]], ptr @a, i64 0, i64 %indvars.iv
  %7 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %6)
  %8 = getelementptr inbounds i8, ptr %6, i64 4
  %9 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %8)
  %10 = getelementptr inbounds i8, ptr %6, i64 8
  %11 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %10)
  %12 = getelementptr inbounds i8, ptr %6, i64 12
  %13 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %12)
  %14 = getelementptr inbounds i8, ptr %6, i64 16
  %15 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %14)
  %16 = getelementptr inbounds i8, ptr %6, i64 20
  %17 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %16)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = load i32, ptr @n, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = icmp slt i64 %indvars.iv.next, %19
  br i1 %20, label %.lr.ph, label %.preheader13.preheader, !llvm.loop !9

.preheader13.preheader:                           ; preds = %.lr.ph, %0
  br label %.preheader13

.preheader13:                                     ; preds = %.preheader13.preheader, %.preheader13
  tail call void @_Z3dfsii(i32 noundef 0, i32 noundef 0)
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr @ord, i64 %22
  %24 = tail call noundef zeroext i1 @_ZSt16next_permutationIPiEbT_S1_(ptr noundef nonnull @ord, ptr noundef nonnull %23)
  br i1 %24, label %.preheader13, label %.preheader, !llvm.loop !11

.preheader:                                       ; preds = %.preheader13, %.preheader
  %indvars.iv18 = phi i64 [ %indvars.iv.next19, %.preheader ], [ 1, %.preheader13 ]
  %25 = getelementptr inbounds [1001 x i8], ptr @vis, i64 0, i64 %indvars.iv18
  %26 = load i8, ptr %25, align 1, !tbaa !12, !range !14, !noundef !15
  %27 = trunc nuw i8 %26 to i1
  %indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1
  br i1 %27, label %.preheader, label %28, !llvm.loop !16

28:                                               ; preds = %.preheader
  %29 = trunc nuw nsw i64 %indvars.iv18 to i32
  %30 = add nsw i32 %29, -1
  %31 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %30)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZSt16next_permutationIPiEbT_S1_(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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 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 #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 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}
!12 = !{!13, !13, i64 0}
!13 = !{!"bool", !7, i64 0}
!14 = !{i8 0, i8 2}
!15 = !{}
!16 = distinct !{!16, !10}


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