Submission #856280


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#include <bits/stdc++.h>

#define x first
#define y second

using namespace std;

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> ii;
typedef pair<ll,ll> pll;

ll b=LLONG_MAX;
ll n,s;

int main() {
	cin >> n >> s;
	for (ll base=2;base<=1000000;base++) {
		ll digsum=0;
		ll tnum=n;
		while (tnum) {
			digsum+=tnum%base;
			tnum/=base;
		}
		if (digsum==s && base<b) b=base;
	}
	//cout << b << endl;
	for (ll q=1;q<=1000000;q++) {
		ll nr=s-q;
		ll t=n-nr;
		if (t%q==0 && nr>=0) {
			ll nb=t/q;
			if (nb<b && nr<nb && nb>1 && n/nb+n%nb==s) b=nb;
		}
	}
//cout << b << endl;
	if (n==s && b>n+1) b=n+1;

	if (b==LLONG_MAX) b=-1;
	cout << b << endl;
}

Submission Info

Submission Time
Task D - Digit Sum
User Whalanator
Language C++14 (GCC 5.4.1)
Score 0
Code Size 760 Byte
Status WA
Exec Time 64 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 500
Status
AC × 5
AC × 46
WA × 1
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 62 ms 256 KB
subtask1_100000000000_100000000000.txt AC 64 ms 256 KB
subtask1_100000000000_2.txt AC 62 ms 256 KB
subtask1_100000000000_3.txt AC 62 ms 256 KB
subtask1_100000000000_50000000000.txt AC 62 ms 256 KB
subtask1_100000000000_50000000001.txt AC 62 ms 256 KB
subtask1_100000000000_99999999999.txt AC 62 ms 256 KB
subtask1_16983563041_1.txt AC 60 ms 256 KB
subtask1_1_1.txt AC 41 ms 256 KB
subtask1_1_2.txt AC 39 ms 256 KB
subtask1_1_31415926535.txt AC 39 ms 256 KB
subtask1_239484768_194586924.txt AC 55 ms 256 KB
subtask1_2_1.txt AC 41 ms 256 KB
subtask1_2_2.txt AC 41 ms 256 KB
subtask1_31415926535_1.txt AC 58 ms 256 KB
subtask1_49234683534_2461734011.txt AC 59 ms 256 KB
subtask1_4_1.txt AC 39 ms 256 KB
subtask1_58640129658_232122496.txt AC 60 ms 256 KB
subtask1_68719476735_35.txt AC 61 ms 256 KB
subtask1_68719476735_36.txt AC 61 ms 256 KB
subtask1_68719476735_37.txt AC 60 ms 256 KB
subtask1_68719476736_1.txt AC 60 ms 256 KB
subtask1_68719476736_2.txt AC 60 ms 256 KB
subtask1_72850192441_16865701.txt AC 63 ms 256 KB
subtask1_79285169301_27.txt AC 61 ms 256 KB
subtask1_82914867733_1676425945.txt AC 61 ms 256 KB
subtask1_8594813796_75700.txt AC 56 ms 256 KB
subtask1_87654_12345.txt AC 40 ms 256 KB
subtask1_87654_138.txt AC 40 ms 256 KB
subtask1_87654_30.txt AC 41 ms 256 KB
subtask1_87654_4294967308.txt AC 40 ms 256 KB
subtask1_87654_45678.txt AC 40 ms 256 KB
subtask1_97822032312_49157112.txt AC 62 ms 256 KB
subtask1_98750604051_977728851.txt AC 62 ms 256 KB
subtask1_99999515529_1.txt AC 62 ms 256 KB
subtask1_99999515529_316226.txt AC 63 ms 256 KB
subtask1_99999515529_316227.txt WA 62 ms 256 KB
subtask1_99999515529_316228.txt AC 62 ms 256 KB
subtask1_99999515529_49999757765.txt AC 62 ms 256 KB
subtask1_99999515529_49999757766.txt AC 62 ms 256 KB
subtask1_99999515530_2.txt AC 61 ms 256 KB
subtask1_99999999977_1.txt AC 62 ms 256 KB
subtask1_99999999977_2.txt AC 61 ms 256 KB
subtask1_99999999977_49999999989.txt AC 61 ms 256 KB
subtask1_99999999977_49999999990.txt AC 61 ms 256 KB
subtask1_99999999999_1.txt AC 61 ms 256 KB
subtask1_99999999999_100000000000.txt AC 62 ms 256 KB