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#include <bits/stdc++.h>
using namespace std;


const short LOVE = 1411;


void query() {
    int n; string m;
    cin >> n >> m;
    int D = 0, S = 0;
    for (int i = 0; i < n; ++i){
        D += (m[i] == 'D');
        S += (m[i] == 'S');
    }
    if ((D&1) || (S&1)) {
        cout << 0;
        return;
    }
    for (int a = 0; a < n; ++a)
        for (int b = a, d = 0, s = 0; b < n; ++b) {
            d += (m[b] == 'D');
            s += (m[b] == 'S');
            if (d == D/2 && s == S/2) {
                cout << a + 1 << ' ' << b + 1;
                return;
            }
        }
    cout << 0;
}


int main(){
    //freopen("Test.INP", "r", stdin);
    //freopen("Test.OUT", "w", stdout);
    cin.tie(NULL)->sync_with_stdio(false);


    int t; for (t = 1; t--;) query();


    return 0;
}