#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, e) for (int i = (int)(s); i < (int)(e); ++i)
#define all(a) (a).begin(),(a).end()

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    
    int N, M;
    cin >> N >> M;
    
    int ans = 0;
    
    rep(t, 0, N) {
        string S;
        int R;
        cin >> S >> R;
        
        if (R >= 1200) {
            if (S.substr(0, 4) != "oooo") ++ans;
        }
    }
    
    cout << ans << '\n';
}