#include <stdio.h>
#include <algorithm>
using namespace std;
int main(){
int i, n,j,cnt = 0;
scanf("%d",&n);tri[3];
for (i = 0; i < n; i++){
for (j = 0; j < 3; j++){
scanf("%d",tri[i]);
}
sort(tri,tri+3);
if (tri[0]*tri[0] + tri[1]*tri[1] = tri[2]*tri[2]) cnt++;
}
printf("%d\n",cnt);
return 0;
}
