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

int h,w,x,y,t=2e6;
vector<string> s(2000);

bool dfs(int x,int y) {
    if(s[x][y]=='#')return 1;
    if(--t==0) cout << "loop";
    else if(dfs((x+1)%h,(y+1)%w))cout << x+1 << " " << y+1;
    return 0;
}

int main() {
    cin >> h >> w;
    for(int i = 0; i < h; i++) {
        cin >> s[i];
        for(int j = 0; j < w; j++) if(s[i][j] == 'R') x=i,y=j;
    }
    if(dfs((x+1)%h,(y+1)%w)) cout << x+1 << " " << y+1;
}