Time (s): ~0.034
package margusmartseppcode.From_40_to_49;
public class Problem_48 {
public static void main(String[] args) {
long result = 0, d10 = 10000000000L;
for (long u = 1, tmp = u; u <= 1000; result += tmp, ++u, tmp = u)
for (long v = 1; v < u; ++v)
tmp = (tmp * u) % d10;
System.out.println(result % d10);
}
}
Time (s): ~0.224
package margusmartseppcode.From_40_to_49;
import java.math.BigInteger;
public class Problem_48 {
// Note: i = 2 !!!
public static void main(String[] args) {
BigInteger num = BigInteger.ONE;
for (int i = 2; i < 1000; i++)
num = num.add(BigInteger.valueOf(i).pow(i));
String result = num.toString();
System.out.println(result.substring(result.length() - 10));
}
}
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