#import <stdio.h>
#import <string.h>
typedef long long INT;
int main(){
    INT n;
    scanf("%lld",&n);
    int v=0;
    for(INT p=1LL;p*p<=n;p++) {
        if (n%p==0) {
            char s[20];
            sprintf(s, "%lld", n/p);
            v=strlen(s);
        }
    }
    printf("%d", v);
    return 0;
}

; ModuleID = '/data/TheStack_IR/OJ_Samples/Collated/ObjectiveC/Source_813/source.m'
source_filename = "/data/TheStack_IR/OJ_Samples/Collated/ObjectiveC/Source_813/source.m"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

@.str = private unnamed_addr constant [5 x i8] c"%lld\00", align 1
@.str.1 = private unnamed_addr constant [3 x i8] c"%d\00", align 1

; Function Attrs: nofree nounwind uwtable
define dso_local i32 @main() local_unnamed_addr #0 {
entry:
  %n = alloca i64, align 8
  %s = alloca [20 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %n) #4
  %call = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %n)
  %0 = load i64, ptr %n, align 8, !tbaa !5
  %cmp.not10 = icmp slt i64 %0, 1
  br i1 %cmp.not10, label %for.cond.cleanup, label %for.body

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  %v.0.lcssa = phi i32 [ 0, %entry ], [ %v.1, %for.inc ]
  %call5 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %v.0.lcssa)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %n) #4
  ret i32 0

for.body:                                         ; preds = %entry, %for.inc
  %1 = phi i64 [ %2, %for.inc ], [ %0, %entry ]
  %p.012 = phi i64 [ %inc, %for.inc ], [ 1, %entry ]
  %v.011 = phi i32 [ %v.1, %for.inc ], [ 0, %entry ]
  %rem = srem i64 %1, %p.012
  %div = sdiv i64 %1, %p.012
  %cmp1 = icmp eq i64 %rem, 0
  br i1 %cmp1, label %if.then, label %for.inc

if.then:                                          ; preds = %for.body
  call void @llvm.lifetime.start.p0(i64 20, ptr nonnull %s) #4
  %call2 = call i32 (ptr, ptr, ...) @sprintf(ptr noundef nonnull dereferenceable(1) %s, ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %div) #4
  %call4 = call i64 @strlen(ptr noundef nonnull dereferenceable(1) %s) #5
  %conv = trunc i64 %call4 to i32
  call void @llvm.lifetime.end.p0(i64 20, ptr nonnull %s) #4
  %.pre = load i64, ptr %n, align 8, !tbaa !5
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.then
  %2 = phi i64 [ %.pre, %if.then ], [ %1, %for.body ]
  %v.1 = phi i32 [ %conv, %if.then ], [ %v.011, %for.body ]
  %inc = add nuw nsw i64 %p.012, 1
  %mul = mul nsw i64 %inc, %inc
  %cmp.not = icmp sgt i64 %mul, %2
  br i1 %cmp.not, label %for.cond.cleanup, label %for.body
}

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

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

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

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #3

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

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

attributes #0 = { nofree 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 = { 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 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 }
attributes #5 = { nounwind willreturn memory(read) }

!llvm.linker.options = !{}
!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 = !{!"Ubuntu clang version 18.0.0 (++20231007042255+8abb2ace888b-1~exp1~20231007042414.1230)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
