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import java.io.*;
class CleanupPlain {
void test() throws Exception {
InputStream in = new FileInputStream("in");
try {
OutputStream out = new FileOutputStream("out");
try {
if (in.markSupported()) {
out.flush();
}
} finally {
if (java.util.Collections.singletonList(out).get(0) != null) {
out.close();
}
}
} finally {
if (java.util.Collections.singletonList(in).get(0) != null) {
in.close();
}
}
}
}
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