Submission #5544534


Source Code Expand

#include<bits/stdc++.h>
#define ll long long
#define inf 0x3f3f3f3f3f3f3f3fLL
#define rep(i,a,b) for(register ll i=(a);i<=(b);i++)
#define dep(i,a,b) for(register ll i=(a);i>=(b);i--)
using namespace std;
const int maxn=50+5;
const int maxm=5000+5;
//const double pi=acos(-1.0);
//const double eps=1e-9;
const ll mo=1e9+7;
ll n,m,k;
int a[maxn];
ll ans,tmp,cnt;
char s[maxn];
ll power(ll a,ll n)
{
    ll sum=1;
    while(n)
    {
        if(n&1) sum=sum*a%mo;
        n>>=1;
        a=a*a%mo;
    }
    return sum;
}
ll f(ll b,ll n)
{
    if(n<b) return n;
    return n%b+f(b,n/b);
}
int main()
{
    while(scanf("%lld%lld",&n,&m)!=EOF)
    {
        ll ans=inf,tmp=sqrt(n*1.0);
        for(ll i=1;i<=tmp;i++)
        {
            ll b=n/i;
            if((n/b)!=i) continue;
            if(b<2) continue;
            ll x=n%b;
            ll y=(n/i)-(n/(i+1));
            ll z=m-i-x;
            if(((z/i)<y)&&(z%i==0)&&m-i>=0) ans=min(ans,b);
        }
        for(ll i=2;i<=tmp;i++)
        {
            if(f(i,n)==m)
            {ans=min(i,ans);break;}
        }
        if(ans==inf) ans=-1;
        printf("%lld\n",ans);
    }
    return 0;
}

Submission Info

Submission Time
Task D - Digit Sum
User IGVA
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1208 Byte
Status WA
Exec Time 20 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 500
Status
AC × 5
AC × 30
WA × 17
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 14 ms 256 KB
subtask1_100000000000_100000000000.txt WA 20 ms 256 KB
subtask1_100000000000_2.txt AC 20 ms 256 KB
subtask1_100000000000_3.txt WA 20 ms 256 KB
subtask1_100000000000_50000000000.txt WA 20 ms 256 KB
subtask1_100000000000_50000000001.txt AC 20 ms 256 KB
subtask1_100000000000_99999999999.txt AC 20 ms 256 KB
subtask1_16983563041_1.txt AC 6 ms 256 KB
subtask1_1_1.txt WA 1 ms 256 KB
subtask1_1_2.txt AC 1 ms 256 KB
subtask1_1_31415926535.txt AC 1 ms 256 KB
subtask1_239484768_194586924.txt AC 2 ms 256 KB
subtask1_2_1.txt AC 1 ms 256 KB
subtask1_2_2.txt WA 1 ms 256 KB
subtask1_31415926535_1.txt AC 12 ms 256 KB
subtask1_49234683534_2461734011.txt WA 14 ms 256 KB
subtask1_4_1.txt AC 1 ms 256 KB
subtask1_58640129658_232122496.txt WA 15 ms 256 KB
subtask1_68719476735_35.txt AC 14 ms 256 KB
subtask1_68719476735_36.txt AC 11 ms 256 KB
subtask1_68719476735_37.txt AC 17 ms 256 KB
subtask1_68719476736_1.txt AC 11 ms 256 KB
subtask1_68719476736_2.txt AC 11 ms 256 KB
subtask1_72850192441_16865701.txt WA 17 ms 256 KB
subtask1_79285169301_27.txt AC 12 ms 256 KB
subtask1_82914867733_1676425945.txt WA 18 ms 256 KB
subtask1_8594813796_75700.txt AC 6 ms 256 KB
subtask1_87654_12345.txt WA 1 ms 256 KB
subtask1_87654_138.txt AC 1 ms 256 KB
subtask1_87654_30.txt AC 1 ms 256 KB
subtask1_87654_4294967308.txt AC 1 ms 256 KB
subtask1_87654_45678.txt AC 1 ms 256 KB
subtask1_97822032312_49157112.txt WA 20 ms 256 KB
subtask1_98750604051_977728851.txt WA 20 ms 256 KB
subtask1_99999515529_1.txt AC 20 ms 256 KB
subtask1_99999515529_316226.txt WA 20 ms 256 KB
subtask1_99999515529_316227.txt WA 20 ms 256 KB
subtask1_99999515529_316228.txt AC 20 ms 256 KB
subtask1_99999515529_49999757765.txt WA 20 ms 256 KB
subtask1_99999515529_49999757766.txt AC 20 ms 256 KB
subtask1_99999515530_2.txt AC 20 ms 256 KB
subtask1_99999999977_1.txt AC 20 ms 256 KB
subtask1_99999999977_2.txt WA 20 ms 256 KB
subtask1_99999999977_49999999989.txt WA 20 ms 256 KB
subtask1_99999999977_49999999990.txt AC 20 ms 256 KB
subtask1_99999999999_1.txt AC 20 ms 256 KB
subtask1_99999999999_100000000000.txt AC 20 ms 256 KB