public class AckermannFunction {
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public static int ackermann(int m, int n) {
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if (m == 0) {
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return n + 1;
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}
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if (n == 0) {
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return ackermann(m - 1, 1);
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}
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return ackermann(m - 1, ackermann(m, n - 1));
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}
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public static int main() {
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System.out.println(ackermann(0, 0));
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System.out.println(ackermann(0, 5));
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System.out.println(ackermann(1, 0));
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System.out.println(ackermann(1, 5));
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System.out.println(ackermann(2, 0));
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System.out.println(ackermann(2, 5));
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System.out.println(ackermann(3, 0));
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return 0;
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}
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}
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