#include<bits/stdc++.h>
using namespace std;
#define int long long
const int inf = 2000000000000000000;
signed main(){
    int n,m;cin>>n>>m;
    int k=0;
    for(int i=0;i<n;i++){
        string s;int h;cin>>s>>h;
        if(h>=1200){
            if(s[0]+s[1]+s[2]+s[3]!=('o')*4){
                k++;
            }
        }
    }
    cout<<k<<"\n";
}