Submission #855696


Source Code Expand

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#include <stdio.h>

long long n,s;

int main()
{
	scanf ("%lld %lld",&n,&s);
	for (long long b=2;b<=500000;b++){
		long long t = n, k = 0;
		while (t){
			k += t % b;
			t /= b;
		}
		if (k == s){
			printf ("%lld\n",b);
			return 0;
		}
	}
	long long g = 1e18;
	for (long long r=500000;r>=1;r--){
		if (s >= r){
			long long q = s - r;
			if (n - q >= 0 && (n - q) % r == 0){
				long long b = (n - q) / r;
				if (q < b && r < b && g > b)
					g = b;
			}
		}
	}
	if (g < 1e17){
		printf ("%lld\n",g);
	}
	else if (s == n) printf ("%lld\n",n+1);
	else printf ("-1\n");
	return 0;
}

Submission Info

Submission Time
Task D - Digit Sum
User august14
Language C++14 (GCC 5.4.1)
Score 500
Code Size 618 Byte
Status AC
Exec Time 35 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%lld %lld",&n,&s);
                           ^

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 2 ms 128 KB
subtask1_100000000000_100000000000.txt AC 35 ms 128 KB
subtask1_100000000000_2.txt AC 27 ms 128 KB
subtask1_100000000000_3.txt AC 27 ms 128 KB
subtask1_100000000000_50000000000.txt AC 35 ms 128 KB
subtask1_100000000000_50000000001.txt AC 35 ms 128 KB
subtask1_100000000000_99999999999.txt AC 35 ms 128 KB
subtask1_16983563041_1.txt AC 2 ms 128 KB
subtask1_1_1.txt AC 2 ms 128 KB
subtask1_1_2.txt AC 12 ms 128 KB
subtask1_1_31415926535.txt AC 12 ms 128 KB
subtask1_239484768_194586924.txt AC 28 ms 128 KB
subtask1_2_1.txt AC 2 ms 128 KB
subtask1_2_2.txt AC 2 ms 128 KB
subtask1_31415926535_1.txt AC 24 ms 128 KB
subtask1_49234683534_2461734011.txt AC 33 ms 128 KB
subtask1_4_1.txt AC 2 ms 128 KB
subtask1_58640129658_232122496.txt AC 33 ms 128 KB
subtask1_68719476735_35.txt AC 10 ms 128 KB
subtask1_68719476735_36.txt AC 2 ms 128 KB
subtask1_68719476735_37.txt AC 25 ms 128 KB
subtask1_68719476736_1.txt AC 2 ms 128 KB
subtask1_68719476736_2.txt AC 2 ms 128 KB
subtask1_72850192441_16865701.txt AC 34 ms 128 KB
subtask1_79285169301_27.txt AC 3 ms 128 KB
subtask1_82914867733_1676425945.txt AC 34 ms 128 KB
subtask1_8594813796_75700.txt AC 5 ms 128 KB
subtask1_87654_12345.txt AC 3 ms 128 KB
subtask1_87654_138.txt AC 2 ms 128 KB
subtask1_87654_30.txt AC 2 ms 128 KB
subtask1_87654_4294967308.txt AC 13 ms 128 KB
subtask1_87654_45678.txt AC 14 ms 128 KB
subtask1_97822032312_49157112.txt AC 35 ms 128 KB
subtask1_98750604051_977728851.txt AC 35 ms 128 KB
subtask1_99999515529_1.txt AC 20 ms 128 KB
subtask1_99999515529_316226.txt AC 32 ms 128 KB
subtask1_99999515529_316227.txt AC 20 ms 128 KB
subtask1_99999515529_316228.txt AC 25 ms 128 KB
subtask1_99999515529_49999757765.txt AC 35 ms 128 KB
subtask1_99999515529_49999757766.txt AC 35 ms 128 KB
subtask1_99999515530_2.txt AC 20 ms 128 KB
subtask1_99999999977_1.txt AC 27 ms 128 KB
subtask1_99999999977_2.txt AC 27 ms 128 KB
subtask1_99999999977_49999999989.txt AC 35 ms 128 KB
subtask1_99999999977_49999999990.txt AC 35 ms 128 KB
subtask1_99999999999_1.txt AC 27 ms 128 KB
subtask1_99999999999_100000000000.txt AC 35 ms 128 KB