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

int main() {
    int n, m;
    cin >> n >> m;
    int r, ans = 0;
    string s; 
    rep(i,0,n) {
        bool a = false, b = false;
        cin >> s >> r;
        rep(j,0,4) {
            if (s[j] == 'x') a = true;
        }
        if (r >= 1200) b = true;
        if (a && b) ans++;
    }
    cout << ans << endl;
}