#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rrep(i, n) for(int i = (int)(n - 1); i >= 0; i--)
template <typename T> bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template <typename T> bool chmin(T &a,const T &b){if(a>b){a=b;return true;}return false;}
using ll = long long;
#define int ll
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vb = vector<bool>;
using vvb = vector<vector<bool>>;
using vs = vector<string>;
using pii = pair<int, int>;
/*
using mint = modint;
using vm = vector<mint>;
using vvm = vector<vector<mint>>;
*/

signed main(){
  int n, m; cin >> n >> m;
  int ans = 0;
  while(n--){
  	string s; int r; cin >> s >> r;
  	bool ok = true; rep(i, 4) ok &= s.at(i) == 'o';
  	if(!ok && r >= 1200) ans++;
  }
  cout << ans << endl;
}