#include<iostream>
using namespace std;
int n,Y,G,y,g,k,cnt;
int main()
{
    cin>>n>>Y>>G;
    for(int i=1;i<=n;i++)
    {
        cin>>y>>g>>k;
        if(y+k>=Y) cnt++;
        if(g-k<=G) cnt++;
        if(g-k<=G&&y+k>=Y) cnt++;
    }
    cout<<cnt;
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int n,minY,minG;
int cnt,Y,K,G;
signed main()
{
cin>>n>>minY>>minG;
while(n--)
{
cin>>Y>>G>>K;
if(Y+K>=minY) cnt++;
if(G-K<=minG) cnt++;
if(Y+K>=minY&&G-K<=minG) cnt++;
}
cout<<cnt;
return 0;
}