#include <bits/stdc++.h>
using namespace std;
void Yes(){cout << "YES\n";}
void No(){cout << "NO\n";}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int T; cin >> T;
    int answer = 0,N; cin >> N;
    while(T--){
        string s; cin >> s;
        int x = 0,y = 0,c1 = 0,c2 = 0;
        for(auto c : s){
            if(c == 'L' && y > 0){
                if(x == 1) c2++;
                if(x == 0) c1++; 
            }
            if(c == 'R' && y > 0){
                if(x == -1) c1++;
                if(x == 0) c2++;
            }
            if(c == 'L') x--;
            else if(c == 'R') x++;
            else if(c == 'U') y++;
            else y--;
        }

        if(c1%2 == 0 && c2%2 == 0) answer++;
    }   
    cout << answer << endl;
}