// Codeforces Round #180 (Div. 2) A Snow Footprints
import java.io.*;
import java.io.ObjectInputStream.GetField;
import java.math.*;
import java.text.*;
import java.util.*;
//Codeforces
public class MainCodeforces1 {
private static MyScanner in;
private static PrintStream out;
// change to false before submitting
private static boolean LOCAL_TEST = false;
private static void solve() throws IOException
{
int N = in.nextInt();
String road = in.nextString();
int rFirst = -1;
int rLast = -1;
int lFirst = -1;
int lLast = -1;
for (int i = 0; i < N; i++) {
if (road.charAt(i) == 'R') {
if (rFirst == -1)
rFirst = i + 1;
rLast = i + 1;
}
if (road.charAt(i) == 'L') {
if (lFirst == -1)
lFirst = i + 1;
lLast = i + 1;
}
}
int start;
int end;
if (rFirst > 0)
start = rFirst;
else
start = lLast;
if (rLast > 0) {
if (lFirst > 0)
end = rLast;
else
end = rLast + 1;
}
else
end = lFirst - 1;
out.println("" + start + " " + end);
}
public static void main(String[] args) throws IOException {
// helpers for input/output
out = System.out;
if (LOCAL_TEST) {
in = new MyScanner("E:\\zin.txt");
}
else {
boolean usingFileForIO = false;
if (usingFileForIO) {
// using input.txt and output.txt as I/O
in = new MyScanner("input.txt");
out = new PrintStream("output.txt");
}
else {
in = new MyScanner();
out = System.out;
}
}
solve();
}
// =====================================
static class MyScanner {
Scanner inp = null;
public MyScanner() throws IOException
{
inp = new Scanner(System.in);
}
public MyScanner(String inputFile) throws IOException {
inp = new Scanner(new FileInputStream(inputFile));
}
public int nextInt() throws IOException {
return inp.nextInt();
}
public long nextLong() throws IOException {
return inp.nextLong();
}
public double nextDouble() throws IOException {
return inp.nextDouble();
}
public String nextString() throws IOException {
return inp.next();
}
}
}
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