import java.util.*;
import java.util.function.*;
import java.util.stream.*;
 
class Ideone {
    public static final Function<List<IntUnaryOperator>, UnaryOperator<List<Integer>>> mapper =
        opList -> argList -> argList.stream()
                .map(i -> {
                    List<Integer> resList = new ArrayList<>();
                    for (IntUnaryOperator op : opList) {
                        i = op.applyAsInt(i);
                        resList.add(i);
                    }
                    return resList;
                })
                .flatMap(List::stream)
                .collect(Collectors.toList());
 
    public static void main(String[] args) {
        List<Integer> list = mapper.apply(List.of(x -> x, x -> x + 1, x -> x * x)).apply(List.of(1, 2));
        System.out.println(list);
    }
}

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