Submission #857043


Source Code Expand

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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define f(i,x,n) for (int i = x;i < n;++i)

/*int kmp[500001];
char s[500001];
bool bad[500001];
int n, mn = -1;

void bld() {
	int k = 0;
	f(i, 1, n) {
		while (k && s[i] != s[k])k = kmp[k - 1];
		if (s[i] == s[k])++k;
		kmp[i] = k;
	}
}

int main() {
	freopen("in.txt", "r", stdin);
	scanf("%s", s);
	n = strlen(s);
	bld();
	f(i, 1, n)if (n%i == 0) {
		if(kmp[n - 1] )
	}
}
*/

ll gt(ll x,ll b) {
	ll an = 0;
	while (x) {
		an += x%b;
		x /= b;
	}
	return an;
}

int main() {
	ll n, s;
	scanf("%lld%lld", &n, &s);
	/*f(i, 2, 101) {
		printf("%d:", i);
		ll x = n;
		while (x) {
			printf(" %lld", x%i);
			x /= i;
		}
		printf("\n");
	}*/
	f(i, 2, 500001) {
		if (gt(n, i) == s) { printf("%d", i); return 0; }
	}
	int mx;
	if (n & 1 == 0) {
		ll z = n >> 1;
		if (s > z)printf("-1");
		else printf("%lld", n - s + 1);
	}
	else {
		ll z = n / 2 + 1;
		if (s > z)printf("-1");
		else printf("%lld", n - s + 1);
	}
}

Submission Info

Submission Time
Task D - Digit Sum
User Motarack
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1046 Byte
Status WA
Exec Time 28 ms
Memory 256 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:42:27: 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 0 / 500
Status
AC × 5
AC × 37
WA × 10
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 WA 28 ms 256 KB
subtask1_100000000000_2.txt WA 28 ms 256 KB
subtask1_100000000000_3.txt AC 28 ms 256 KB
subtask1_100000000000_50000000000.txt AC 28 ms 256 KB
subtask1_100000000000_50000000001.txt WA 28 ms 256 KB
subtask1_100000000000_99999999999.txt AC 28 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 13 ms 256 KB
subtask1_1_31415926535.txt AC 14 ms 256 KB
subtask1_239484768_194586924.txt AC 22 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 26 ms 256 KB
subtask1_49234683534_2461734011.txt AC 26 ms 256 KB
subtask1_4_1.txt AC 4 ms 256 KB
subtask1_58640129658_232122496.txt WA 26 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 27 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 27 ms 256 KB
subtask1_79285169301_27.txt AC 4 ms 256 KB
subtask1_82914867733_1676425945.txt WA 27 ms 256 KB
subtask1_8594813796_75700.txt AC 6 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 15 ms 256 KB
subtask1_87654_45678.txt AC 14 ms 256 KB
subtask1_97822032312_49157112.txt WA 28 ms 256 KB
subtask1_98750604051_977728851.txt WA 28 ms 256 KB
subtask1_99999515529_1.txt AC 22 ms 256 KB
subtask1_99999515529_316226.txt WA 28 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 28 ms 256 KB
subtask1_99999515529_49999757766.txt AC 28 ms 256 KB
subtask1_99999515530_2.txt AC 22 ms 256 KB
subtask1_99999999977_1.txt AC 28 ms 256 KB
subtask1_99999999977_2.txt AC 28 ms 256 KB
subtask1_99999999977_49999999989.txt AC 28 ms 256 KB
subtask1_99999999977_49999999990.txt AC 28 ms 256 KB
subtask1_99999999999_1.txt AC 28 ms 256 KB
subtask1_99999999999_100000000000.txt AC 28 ms 256 KB