#include<stdio.h>

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

int check(double a,double b){
	if(a-b>-0.0000000000001 && a-b<0.00000000000001) return 0;
	if(a-b>0) return 1;
	return -1;
}

int main(){
	int n,i,j,k;
	int p,h[3];
	double hen[3][4001],comp;
	long a,b,c;
	scanf("%d",&n);
	for(i=0;i<3;i++){
		h[i]=1;
		hen[i][0]=1.0;
	}
	for(i=0;i<n;i++){
		scanf("%d %ld %ld",&p,&a,&b);
		hen[p][h[p]]=(double)a/(double)(a+b);
		h[p]++;
	}
	for(i=0;i<3;i++){
		qsort(hen[i],h[i],sizeof(double),cmp);
	}
	c=0;
	for(i=0;i<h[0];i++){
		for(j=h[1]-1;j>=0;j--){
			if(check(1.0-hen[0][i],hen[1][j])<=0){
				comp=(check(hen[0][i],hen[1][i])<=0)?1.0-hen[1][j]:1.0-hen[0][i];
				for(k=h[2]-1;k>=0;k--){
					if(check(comp,hen[2][k])<=0){
						if(check(2.0-hen[0][i]-hen[1][j],hen[2][k])!=0){
							c++;
						}
					}else{
						break;
					}
				}
			}else{
				break;
			}
		}
	}
	printf("%ld\n",c);
	return 0;
}