; LLVM IR from lzyrapx/Competitive-Programming :: LibreOJ (102（最小费用最大流）)

; 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
@s = external dso_local global i32, align 4
@t = external dso_local global i32, align 4
@Maxflow = external dso_local global i32, align 4
@Mincost = external dso_local global i32, align 4
@head = external dso_local global [401 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7addedgeiiii(i32 noundef, i32 noundef, 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: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4MCMFRiS_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #4 {
  %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 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)
  store i32 1, ptr @s, align 4, !tbaa !5
  %8 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %8, ptr @t, align 4, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 16 @head, i8 -1, i64 1604, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %24, %0
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = load i32, ptr @m, align 4, !tbaa !5
  %12 = icmp sle i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  br label %27

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #6
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %3, ptr noundef %4, ptr noundef %5, ptr noundef %6)
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z7addedgeiiii(i32 noundef %16, i32 noundef %17, i32 noundef %18, i32 noundef %19)
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sub nsw i32 0, %22
  call void @_Z7addedgeiiii(i32 noundef %20, i32 noundef %21, i32 noundef 0, i32 noundef %23)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  br label %24

24:                                               ; preds = %14
  %25 = load i32, ptr %2, align 4, !tbaa !5
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %2, align 4, !tbaa !5
  br label %9, !llvm.loop !9

27:                                               ; preds = %13
  call void @_Z4MCMFRiS_(ptr noundef nonnull align 4 dereferenceable(4) @Mincost, ptr noundef nonnull align 4 dereferenceable(4) @Maxflow)
  %28 = load i32, ptr @Maxflow, align 4, !tbaa !5
  %29 = load i32, ptr @Mincost, align 4, !tbaa !5
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %28, i32 noundef %29)
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #5

declare i32 @printf(ptr noundef, ...) #5

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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { 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 = { 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 #5 = { "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 #6 = { 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"}


; 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
@s = external dso_local local_unnamed_addr global i32, align 4
@t = external dso_local local_unnamed_addr global i32, align 4
@Maxflow = external dso_local global i32, align 4
@Mincost = external dso_local global i32, align 4
@head = external dso_local local_unnamed_addr global [401 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [7 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7addedgeiiii(i32 noundef, i32 noundef, i32 noundef, i32 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 nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4MCMFRiS_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #4 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @m)
  store i32 1, ptr @s, align 4, !tbaa !5
  %6 = load i32, ptr @n, align 4, !tbaa !5
  store i32 %6, ptr @t, align 4, !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1604) @head, i8 -1, i64 1604, i1 false)
  %7 = load i32, ptr @m, align 4, !tbaa !5
  %.not2 = icmp slt i32 %7, 1
  br i1 %.not2, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @_Z4MCMFRiS_(ptr noundef nonnull align 4 dereferenceable(4) @Mincost, ptr noundef nonnull align 4 dereferenceable(4) @Maxflow)
  %8 = load i32, ptr @Maxflow, align 4, !tbaa !5
  %9 = load i32, ptr @Mincost, align 4, !tbaa !5
  %10 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %8, i32 noundef %9)
  ret i32 0

.lr.ph:                                           ; preds = %0, %.lr.ph
  %.03 = phi i32 [ %20, %.lr.ph ], [ 1, %0 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z7addedgeiiii(i32 noundef %12, i32 noundef %13, i32 noundef %14, i32 noundef %15)
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = load i32, ptr %1, align 4, !tbaa !5
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = sub nsw i32 0, %18
  call void @_Z7addedgeiiii(i32 noundef %16, i32 noundef %17, i32 noundef 0, i32 noundef %19)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  %20 = add nuw nsw i32 %.03, 1
  %21 = load i32, ptr @m, align 4, !tbaa !5
  %.not.not = icmp slt i32 %.03, %21
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #5

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #5

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 nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { 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 = { 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 #5 = { 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 #6 = { 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: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass