Contest Duration: - (local time) (100 minutes) Back to Home

Submission #5664258

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```import java.io.*;
import java.util.Scanner;

public class Main {

private static Scanner sc;
private static Printer pr;

private static void solve() {
long n = sc.nextLong();
long s = sc.nextLong();

if (n < s) {
pr.println(-1);
return;
}
if (n == s) {
pr.println(n + 1);
return;
}

long ans = INF;
for (int b = 2; b < Math.min(n, 1_000_000); b++) {
if (f(n, b) == s) {
ans = Math.min(ans, b);
}
}

for (int p = 1; p < Math.min(n, 1_000_000); p++) {
long b = (n - s)  / p + 1;
if (p < b && f(n, b) == s) {
ans = Math.min(ans, b);
}
}

if (ans == INF) {
pr.println(-1);
} else {
pr.println(ans);
}

}

static final long INF = Long.MAX_VALUE;

private static long f(long n, long b) {
long sum = 0;
while (n > 0) {
sum += n % b;
n /= b;
}

return sum;
}

// ---------------------------------------------------
public static void main(String[] args) {
sc = new Scanner(System.in);
pr = new Printer(System.out);

solve();

pr.close();
sc.close();
}

static class Printer extends PrintWriter {
Printer(OutputStream out) {
super(out);
}
}
}
```

#### Submission Info

Submission Time 2019-05-27 20:36:34+0900 D - Digit Sum garnacha Java8 (OpenJDK 1.8.0) 500 1229 Byte AC 167 ms 24148 KB

#### Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
 AC × 5
 AC × 47
Set Name Test Cases
Case Name Status Exec Time Memory
subtask1_100000000000_1.txt AC 159 ms 19668 KB
subtask1_100000000000_100000000000.txt AC 94 ms 20688 KB
subtask1_100000000000_2.txt AC 159 ms 22100 KB
subtask1_100000000000_3.txt AC 159 ms 21204 KB
subtask1_100000000000_50000000000.txt AC 155 ms 22228 KB
subtask1_100000000000_50000000001.txt AC 156 ms 22356 KB
subtask1_100000000000_99999999999.txt AC 148 ms 21200 KB
subtask1_16983563041_1.txt AC 153 ms 19540 KB
subtask1_1_1.txt AC 94 ms 18644 KB
subtask1_1_2.txt AC 92 ms 21204 KB
subtask1_1_31415926535.txt AC 95 ms 21076 KB
subtask1_239484768_194586924.txt AC 144 ms 23892 KB
subtask1_2_1.txt AC 92 ms 21844 KB
subtask1_2_2.txt AC 93 ms 19412 KB
subtask1_31415926535_1.txt AC 153 ms 22228 KB
subtask1_49234683534_2461734011.txt AC 156 ms 20180 KB
subtask1_4_1.txt AC 94 ms 18644 KB
subtask1_58640129658_232122496.txt AC 157 ms 20308 KB
subtask1_68719476735_35.txt AC 162 ms 22228 KB
subtask1_68719476735_36.txt AC 156 ms 20308 KB
subtask1_68719476735_37.txt AC 157 ms 22356 KB
subtask1_68719476736_1.txt AC 161 ms 19412 KB
subtask1_68719476736_2.txt AC 156 ms 20308 KB
subtask1_72850192441_16865701.txt AC 155 ms 20308 KB
subtask1_79285169301_27.txt AC 158 ms 19284 KB
subtask1_82914867733_1676425945.txt AC 156 ms 22228 KB
subtask1_8594813796_75700.txt AC 150 ms 22228 KB
subtask1_87654_12345.txt AC 108 ms 22484 KB
subtask1_87654_138.txt AC 108 ms 20308 KB
subtask1_87654_30.txt AC 107 ms 20308 KB
subtask1_87654_4294967308.txt AC 95 ms 19284 KB
subtask1_87654_45678.txt AC 108 ms 19924 KB
subtask1_97822032312_49157112.txt AC 157 ms 19280 KB
subtask1_98750604051_977728851.txt AC 159 ms 19152 KB
subtask1_99999515529_1.txt AC 164 ms 21716 KB
subtask1_99999515529_316226.txt AC 161 ms 22356 KB
subtask1_99999515529_316227.txt AC 167 ms 22228 KB
subtask1_99999515529_316228.txt AC 163 ms 21072 KB
subtask1_99999515529_49999757765.txt AC 158 ms 19796 KB
subtask1_99999515529_49999757766.txt AC 164 ms 20308 KB
subtask1_99999515530_2.txt AC 161 ms 22356 KB
subtask1_99999999977_1.txt AC 160 ms 22356 KB
subtask1_99999999977_2.txt AC 160 ms 21072 KB
subtask1_99999999977_49999999989.txt AC 157 ms 24148 KB
subtask1_99999999977_49999999990.txt AC 156 ms 19796 KB
subtask1_99999999999_1.txt AC 160 ms 19796 KB
subtask1_99999999999_100000000000.txt AC 94 ms 21588 KB