function solution(nums) {
let answer = 0;
for(var i=0; i<nums.length-2; i++){
for(var j=i+1; j< nums.length-1; j++){
for(var k=j+1; k< nums.length; k++){
let combination = nums[i] + nums[j] + nums[k];
answer++;
for(var l=2; l * l <= combination; l++){
//console.log(`${combination} % ${l} === ${combination % l}`)
if(combination % l === 0){
answer--;
break;
}
}
}
}
}
return answer;
}