Submission #856427


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#include<iostream>
using namespace std;

long long f(long long b,long long n)
{
    if(n<b)
        return n;
    return f(b,n/b)+n%b;
}

int main()
{
    /*cout<<f(100,87654)<<"\n";
    long long n=8,b;
    for(b=2;b<=30;b++)
        cout<<f(b,n)<<" ";
    */
    long long n,s,b;
    cin>>n>>s;
    for(int b=2;b<=1000000;b++)
    {
        if(f(b,n)==s)
        {
            cout<<b;
            return 0;
        }
    }
    b=-1;
    if(n==s)
        b=n+1;
    for(long long q=1;q<1000000;q++)
    {
        if(q>s)
            break;
        long long r=s-q,b1;
        b1=(n-r)/q;
        if(n%b1==r&&n/b1==q)
            {
                if(b==-1)
                    b=b1;
                else
                    b=min(b,b1);
            }
    }
    cout<<b;
    return 0;
}

Submission Info

Submission Time
Task D - Digit Sum
User yash_mittal
Language C++14 (GCC 5.4.1)
Score 0
Code Size 835 Byte
Status RE
Exec Time 784 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 500
Status
AC × 5
AC × 45
RE × 2
Set Name Test Cases
Sample subtask1_87654_30.txt, subtask1_87654_138.txt, subtask1_87654_45678.txt, subtask1_31415926535_1.txt, subtask1_1_31415926535.txt
All subtask1_100000000000_1.txt, subtask1_100000000000_100000000000.txt, subtask1_100000000000_2.txt, subtask1_100000000000_3.txt, subtask1_100000000000_50000000000.txt, subtask1_100000000000_50000000001.txt, subtask1_100000000000_99999999999.txt, subtask1_16983563041_1.txt, subtask1_1_1.txt, subtask1_1_2.txt, subtask1_1_31415926535.txt, subtask1_239484768_194586924.txt, subtask1_2_1.txt, subtask1_2_2.txt, subtask1_31415926535_1.txt, subtask1_49234683534_2461734011.txt, subtask1_4_1.txt, subtask1_58640129658_232122496.txt, subtask1_68719476735_35.txt, subtask1_68719476735_36.txt, subtask1_68719476735_37.txt, subtask1_68719476736_1.txt, subtask1_68719476736_2.txt, subtask1_72850192441_16865701.txt, subtask1_79285169301_27.txt, subtask1_82914867733_1676425945.txt, subtask1_8594813796_75700.txt, subtask1_87654_12345.txt, subtask1_87654_138.txt, subtask1_87654_30.txt, subtask1_87654_4294967308.txt, subtask1_87654_45678.txt, subtask1_97822032312_49157112.txt, subtask1_98750604051_977728851.txt, subtask1_99999515529_1.txt, subtask1_99999515529_316226.txt, subtask1_99999515529_316227.txt, subtask1_99999515529_316228.txt, subtask1_99999515529_49999757765.txt, subtask1_99999515529_49999757766.txt, subtask1_99999515530_2.txt, subtask1_99999999977_1.txt, subtask1_99999999977_2.txt, subtask1_99999999977_49999999989.txt, subtask1_99999999977_49999999990.txt, subtask1_99999999999_1.txt, subtask1_99999999999_100000000000.txt
Case Name Status Exec Time Memory
subtask1_100000000000_1.txt AC 4 ms 256 KB
subtask1_100000000000_100000000000.txt AC 63 ms 256 KB
subtask1_100000000000_2.txt AC 29 ms 256 KB
subtask1_100000000000_3.txt AC 30 ms 256 KB
subtask1_100000000000_50000000000.txt AC 63 ms 256 KB
subtask1_100000000000_50000000001.txt AC 63 ms 256 KB
subtask1_100000000000_99999999999.txt AC 63 ms 256 KB
subtask1_16983563041_1.txt AC 4 ms 256 KB
subtask1_1_1.txt AC 4 ms 256 KB
subtask1_1_2.txt RE 784 ms 256 KB
subtask1_1_31415926535.txt AC 42 ms 256 KB
subtask1_239484768_194586924.txt AC 57 ms 256 KB
subtask1_2_1.txt AC 4 ms 256 KB
subtask1_2_2.txt AC 4 ms 256 KB
subtask1_31415926535_1.txt AC 26 ms 256 KB
subtask1_49234683534_2461734011.txt AC 61 ms 256 KB
subtask1_4_1.txt AC 4 ms 256 KB
subtask1_58640129658_232122496.txt AC 62 ms 256 KB
subtask1_68719476735_35.txt AC 9 ms 256 KB
subtask1_68719476735_36.txt AC 4 ms 256 KB
subtask1_68719476735_37.txt AC 28 ms 256 KB
subtask1_68719476736_1.txt AC 4 ms 256 KB
subtask1_68719476736_2.txt AC 4 ms 256 KB
subtask1_72850192441_16865701.txt AC 62 ms 256 KB
subtask1_79285169301_27.txt AC 4 ms 256 KB
subtask1_82914867733_1676425945.txt AC 62 ms 256 KB
subtask1_8594813796_75700.txt AC 6 ms 256 KB
subtask1_87654_12345.txt AC 4 ms 256 KB
subtask1_87654_138.txt AC 4 ms 256 KB
subtask1_87654_30.txt AC 4 ms 256 KB
subtask1_87654_4294967308.txt AC 41 ms 256 KB
subtask1_87654_45678.txt AC 9 ms 256 KB
subtask1_97822032312_49157112.txt AC 65 ms 256 KB
subtask1_98750604051_977728851.txt AC 63 ms 256 KB
subtask1_99999515529_1.txt AC 16 ms 256 KB
subtask1_99999515529_316226.txt AC 40 ms 256 KB
subtask1_99999515529_316227.txt AC 16 ms 256 KB
subtask1_99999515529_316228.txt AC 19 ms 256 KB
subtask1_99999515529_49999757765.txt AC 63 ms 256 KB
subtask1_99999515529_49999757766.txt AC 63 ms 256 KB
subtask1_99999515530_2.txt AC 16 ms 256 KB
subtask1_99999999977_1.txt AC 29 ms 256 KB
subtask1_99999999977_2.txt AC 29 ms 256 KB
subtask1_99999999977_49999999989.txt AC 63 ms 256 KB
subtask1_99999999977_49999999990.txt AC 63 ms 256 KB
subtask1_99999999999_1.txt AC 29 ms 256 KB
subtask1_99999999999_100000000000.txt RE 213 ms 256 KB