#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<long long> VL;
typedef vector<VL> VVL;
typedef long long LL;
#define all(a) (a).begin(), (a).end()
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define ALL(a)  (a).begin(),(a).end()
#define pb push_back

int main() {
  int n,m;cin>>n>>m;
  int ans=0;
  rep(i,n){
    string s;cin>>s;
    int r;cin>>r;
    if(r>=1200){
      if(s[0]!='o'||s[1]!='o'||s[2]!='o'||s[3]!='o'){ans++;}
    }
  }
  cout<<ans<<endl;
}