"use strict"
const create = () => {
    const input = require("fs").readFileSync("/dev/stdin", "utf8").trim().split("\n");
    const res = {
        "list": input, "index": 0, "max": input.length,
        "hasNext": function() {return this.index < this.max},
        "next": function() { if (!this.hasNext()) {throw "ArrayIndexOutOfBoundsException";}else{return this.list[this.index++];}}
    };
    return res;
}
const o = create();
const next = () => o.next()
const nextInt = () => parseInt(o.next())
const nextStrArray = () => o.next().split(" ")
const nextIntArray = () => o.next().split(" ").map(el => parseInt(el))
const nextCharArray = () => o.next().split("")
const hasNext = () => o.hasNext()
const myout = (...x) => console.log(...x)
const dist = (y,z) => {
    let sum = 0
    for(let i = 0; i<y.length; i++){
        sum += (y[i]-z[i])**2
    }
    return Math.sqrt(sum)
}
const Main = () => {
    const [N, D] = nextIntArray()
    let x = []
    while(hasNext()){
        x.push(nextIntArray())
    }
    let cnt = 0
    for(let i =0;i<x.length;i++){
        for(let j = i+1; j<x.length;j++){
            if(i == j) continue
            if(Number.isInteger(dist(x[i], x[j]))) cnt++
        }
    }
    console.log(cnt)
}
Main()
