This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define pb push_back
#define F first
#define S second
#define endl "\n"
const int INF = 1e18+10;
const int MOD = 1e9+7;
int n, m;
string t[4040];
int32_t main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n >> m;
    bool aa, bb;
    for(int i = 0; i < n; i++) {
        cin >> t[i];
    }
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) {
            if(t[i][j] == 'F') aa = true;
            if(t[i][j] == 'R') bb = true;
        }
    }
    cout << aa + bb << endl;
    return 0;
}
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