第一个in是3 平台说我的代码的out是11

#include <iostream>
using namespace std;

double Divide_Sum ( int n )
{
    double Sum = 0.0 ;
    for ( int i = 1 ; i <= n ; i++ )
    {
        Sum += 1.0 / i ;
    }
    return Sum;
}

void Min_Int ( double Sum )
{
    int Min_Int = 0 ;
    while ( Min_Int < Sum )
    {
        Min_Int++;
    }
    cout << Min_Int <<endl ;
}

int main(int argc, const char * argv[]) {
    
    int n = 0 ;
    cin >> n ;
    Min_Int( Divide_Sum( n ) ) ;

    return 0;
}