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public static void main(String[] args) {
int n = 4;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
int k = i - j + 1;
int value = i + (k - 1) * n - k * (k - 1) / 2;
System.out.print(value + " ");
}
System.out.print("\n");
}
}
public static void main(String[] args) {
long start = System.currentTimeMillis();
String str = "1\n5 2\n8 6 3\n10 9 7 4";
System.out.println(str);
}