// #includes {{{
#include <algorithm>
#include <numeric>
#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <list>
#include <deque>
#include <stack>
#include <set>
#include <map>
#include <cstdio>
#include <cstdlib>
#include <cassert>
#include <cstring>
#include <cmath>
using namespace std;
// }}}
// pre-written code {{{
#define REP(i,n) for(int i=0;i<(int)(n);++i)
#define RREP(i,a,b) for(int i=(int)(a);i<(int)(b);++i)
#define FOR(i,c) for(__typeof((c).begin()) i=(c).begin();i!=(c).end();++i)
#define LET(x,a) __typeof(a) x(a)
//#define IFOR(i,it,c) for(__typeof((c).begin())it=(c).begin();it!=(c).end();++it,++i)
#define ALL(c) (c).begin(), (c).end()
#define MP make_pair

#define EXIST(e,s) ((s).find(e)!=(s).end())

#define RESET(a) memset((a),0,sizeof(a))
#define SET(a) memset((a),-1,sizeof(a))
#define PB push_back
#define DEC(it,command) __typeof(command) it=command

//debug
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
#define debug2(x) cerr << #x << " = [";REP(__ind,(x).size()){cerr << (x)[__ind] << ", ";}cerr << "] (L" << __LINE__ << ")" << endl;

const int INF=0x3f3f3f3f;

typedef long long Int;
typedef unsigned long long uInt;
#ifdef __MINGW32__
typedef double rn;
#else
typedef long double rn;
#endif

typedef pair<int,int> pii;

/*
#ifdef MYDEBUG
#include"debug.h"
#include"print.h"
#endif
*/
// }}}

int N;
vector<rn> t[3];
rn EPS=0.0L;
vector<rn> listed;

int main(){
	cin>>N;
	REP(i,3)t[i].push_back(1.0L);
	listed.push_back(1.0L);
	REP(i,N){
		int p,a,b;
		cin>>p>>a>>b;
		t[p].push_back((rn)a/(rn)(a+b));
		if(p==2)listed.push_back(t[p].back());
	}
	sort(ALL(listed));
	Int d = 0;
	REP(i,t[0].size())REP(j,t[1].size()){
		rn u = 2.0L-(t[0][i] + t[1][j]);
		d+=distance(lower_bound(ALL(listed),u-EPS),upper_bound(ALL(listed),u+EPS));
	}
	Int ans = 0;
	REP(i,t[0].size())REP(j,t[1].size()){
		if(t[0][i]+t[1][j]<1.0L-EPS)continue;
		rn u = max(1.0L-t[0][i],1.0L-t[1][j]);
		
		Int k = distance(lower_bound(ALL(listed),u-EPS),listed.end());
//		cout<<t[0][i]<<" "<<t[1][j]<<" "<<u<<" "<<k<<endl;
		ans+=k;
	}
//	cout<<ans<<" "<<d<<endl;
//	cout<<ans<<endl;
	cout<<ans-d<<endl;
	return 0;
}