#include<iostream>

typedef struct {
	long double h[4001];
} hens;


int check(long double a,long double b){
	if(a-b>-0.00000000000000001 && a-b<0.00000000000000001) return 0;
	if(a-b>0) return 1;
	return -1;
}


int cmp(const void *a,const void *b){
	return check(*(long double*)a,*(long double*)b);
}

long search(long double *hen,long double max,int s,int e){
	if(e==s) return e;
	if(check(hen[(s+e)/2+1],max)>0){
		return search(hen,max,s,(s+e)/2);
	}else{
		return search(hen,max,(s+e)/2+1,e);
	}
}

int main(){
	int n,i,j,k;
	int p,h[3];
	long double s;
	hens hen[3];
	long a,b,c,comp;
	scanf("%d",&n);
	for(i=0;i<3;i++){
		h[i]=1;
		hen[i].h[0]=0.0;
	}
	for(i=0;i<n;i++){
		scanf("%d %ld %ld",&p,&a,&b);
		hen[p].h[h[p]]=(long double)b/(long double)(a+b);
		h[p]++;
	}
	//for(i=0;i<3;i++){
	qsort(hen[2].h,h[2],sizeof(long double),cmp);
	//}
	c=0;
	for(i=0;i<h[0];i++){
		for(j=0;j<h[1];j++){
			if(check(1.0,hen[0].h[i]+hen[1].h[j])==-1) continue;
			if(check(hen[0].h[i],hen[1].h[j])>0){
				s=1.0-hen[0].h[i];
			}else{
				s=1.0-hen[1].h[j];
			}
			comp=search(hen[2].h,s,0,h[2]-1);
			c+=comp+1;
			if(check(hen[2].h[search(hen[2].h,1.0-hen[0].h[i]-hen[1].h[j],0,comp)],1.0-hen[0].h[i]-hen[1].h[j])==0) c--;
			}
	}
	printf("%ld\n",c);
	return 0;
}