Submission #855530


Source Code Expand

Copy
import java.util.Scanner;

public class Main {

	static Scanner sc = new Scanner(System.in);

	public static void main(String[] args) {
		long N = sc.nextLong();
		long S = sc.nextLong();
		System.out.println(solve(N, S));
	}

	static long solve(long N, long S) {
		for (long b = 2; b * b <= N; ++b) {
			long sum = 0;
			long v = N;
			while (v > 0) {
				sum += v % b;
				v /= b;
			}
			if (sum == S) {
				return b;
			}
		}
		long ans = Long.MAX_VALUE;
		for (long i = 1; i * i <= N - S; ++i) {
			if ((N - S) % i != 0) continue;
			long x = i;
			long b = (N - S) / i + 1;
			long y = N - x * b;
			if (0 <= y && y < b) {
				ans = Math.min(ans, b);
			}
		}
		if (N == S) {
			ans = Math.min(ans, N + 1);
		}
		return ans == Long.MAX_VALUE ? -1 : ans;
	}

}

Submission Info

Submission Time
Task D - Digit Sum
User tomerun
Language Java8 (OpenJDK 1.8.0)
Score 500
Code Size 807 Byte
Status AC
Exec Time 302 ms
Memory 9680 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 5
AC × 47
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 192 ms 9424 KB
subtask1_100000000000_100000000000.txt AC 219 ms 9424 KB
subtask1_100000000000_2.txt AC 222 ms 9416 KB
subtask1_100000000000_3.txt AC 230 ms 9424 KB
subtask1_100000000000_50000000000.txt AC 226 ms 9428 KB
subtask1_100000000000_50000000001.txt AC 230 ms 9424 KB
subtask1_100000000000_99999999999.txt AC 218 ms 9424 KB
subtask1_16983563041_1.txt AC 194 ms 9424 KB
subtask1_1_1.txt AC 194 ms 9424 KB
subtask1_1_2.txt AC 198 ms 9420 KB
subtask1_1_31415926535.txt AC 194 ms 9428 KB
subtask1_239484768_194586924.txt AC 195 ms 9424 KB
subtask1_2_1.txt AC 194 ms 9424 KB
subtask1_2_2.txt AC 190 ms 9424 KB
subtask1_31415926535_1.txt AC 218 ms 9552 KB
subtask1_49234683534_2461734011.txt AC 218 ms 9428 KB
subtask1_4_1.txt AC 202 ms 9424 KB
subtask1_58640129658_232122496.txt AC 227 ms 9680 KB
subtask1_68719476735_35.txt AC 210 ms 9416 KB
subtask1_68719476735_36.txt AC 194 ms 9424 KB
subtask1_68719476735_37.txt AC 230 ms 9424 KB
subtask1_68719476736_1.txt AC 189 ms 9428 KB
subtask1_68719476736_2.txt AC 195 ms 9420 KB
subtask1_72850192441_16865701.txt AC 222 ms 9420 KB
subtask1_79285169301_27.txt AC 194 ms 9300 KB
subtask1_82914867733_1676425945.txt AC 234 ms 9552 KB
subtask1_8594813796_75700.txt AC 206 ms 9424 KB
subtask1_87654_12345.txt AC 198 ms 9424 KB
subtask1_87654_138.txt AC 202 ms 9424 KB
subtask1_87654_30.txt AC 195 ms 9420 KB
subtask1_87654_4294967308.txt AC 202 ms 9428 KB
subtask1_87654_45678.txt AC 198 ms 9424 KB
subtask1_97822032312_49157112.txt AC 238 ms 9424 KB
subtask1_98750604051_977728851.txt AC 302 ms 9424 KB
subtask1_99999515529_1.txt AC 214 ms 9428 KB
subtask1_99999515529_316226.txt AC 230 ms 9424 KB
subtask1_99999515529_316227.txt AC 242 ms 9424 KB
subtask1_99999515529_316228.txt AC 226 ms 9420 KB
subtask1_99999515529_49999757765.txt AC 234 ms 9424 KB
subtask1_99999515529_49999757766.txt AC 226 ms 9424 KB
subtask1_99999515530_2.txt AC 218 ms 9428 KB
subtask1_99999999977_1.txt AC 226 ms 9420 KB
subtask1_99999999977_2.txt AC 235 ms 9420 KB
subtask1_99999999977_49999999989.txt AC 230 ms 9424 KB
subtask1_99999999977_49999999990.txt AC 226 ms 9424 KB
subtask1_99999999999_1.txt AC 230 ms 9420 KB
subtask1_99999999999_100000000000.txt AC 222 ms 9420 KB