Submission #856171


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#include <cmath>
#include <vector>
#include <iostream>
#include <limits>
#include <iostream>
#include <vector>
#include <cassert>
#include <complex>
#include <cstring>
#include <map>
#include <cmath>
#include <set>
#include <algorithm>
#include <queue>

using namespace std;
typedef long long Long;



int main(){

	Long n, s;
//	while(true){
		cin >> n >> s;
		if(n == s){
			cout << n+1 << endl;
		}else{
			for(int i = 2; i <= 1000000LL; ++i){
				Long cn = n, ts = 0;
				while(cn){
					ts += cn % i;
					cn /= i;
				}
				if(ts == s){
					cout << i << endl;
					return 0;
				}
			}
			for(int i = 1; i <= min(1000000LL, s); ++i){
				Long m = s - i;
				Long cn = n - m;
				if(cn < 0)continue;
				if(cn % i == 0){
					Long mu = cn / i;
					if(mu > i && mu > m){
						cout << mu << endl;
						return 0;
					}
				}
			}
			cout << -1 << endl;		
		}
//	}
	
}


/*

31415926546
12


 */

Submission Info

Submission Time
Task D - Digit Sum
User cjtoribio
Language C++14 (GCC 5.4.1)
Score 0
Code Size 967 Byte
Status WA
Exec Time 63 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 500
Status
AC × 5
AC × 39
WA × 8
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 4 ms 256 KB
subtask1_100000000000_2.txt WA 46 ms 256 KB
subtask1_100000000000_3.txt AC 45 ms 256 KB
subtask1_100000000000_50000000000.txt AC 45 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 AC 23 ms 256 KB
subtask1_1_31415926535.txt AC 24 ms 256 KB
subtask1_239484768_194586924.txt AC 56 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 42 ms 256 KB
subtask1_49234683534_2461734011.txt AC 43 ms 256 KB
subtask1_4_1.txt AC 4 ms 256 KB
subtask1_58640129658_232122496.txt WA 43 ms 256 KB
subtask1_68719476735_35.txt AC 11 ms 256 KB
subtask1_68719476735_36.txt AC 4 ms 256 KB
subtask1_68719476735_37.txt WA 44 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 WA 45 ms 256 KB
subtask1_79285169301_27.txt AC 4 ms 256 KB
subtask1_82914867733_1676425945.txt WA 45 ms 256 KB
subtask1_8594813796_75700.txt AC 7 ms 256 KB
subtask1_87654_12345.txt AC 5 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 25 ms 256 KB
subtask1_87654_45678.txt AC 25 ms 256 KB
subtask1_97822032312_49157112.txt WA 45 ms 256 KB
subtask1_98750604051_977728851.txt WA 45 ms 256 KB
subtask1_99999515529_1.txt AC 22 ms 256 KB
subtask1_99999515529_316226.txt WA 46 ms 256 KB
subtask1_99999515529_316227.txt AC 22 ms 256 KB
subtask1_99999515529_316228.txt AC 27 ms 256 KB
subtask1_99999515529_49999757765.txt AC 45 ms 256 KB
subtask1_99999515529_49999757766.txt AC 63 ms 256 KB
subtask1_99999515530_2.txt AC 23 ms 256 KB
subtask1_99999999977_1.txt AC 45 ms 256 KB
subtask1_99999999977_2.txt AC 45 ms 256 KB
subtask1_99999999977_49999999989.txt AC 45 ms 256 KB
subtask1_99999999977_49999999990.txt AC 63 ms 256 KB
subtask1_99999999999_1.txt AC 45 ms 256 KB
subtask1_99999999999_100000000000.txt AC 63 ms 256 KB