Easiest Solution in C
Code
# Code
```c []
bool isPossibleToSplit(int* nums, int numsSize) {
    int freq[101] = {0};
    for (int i = 0; i < numsSize; i++) {
        freq[nums[i]]++;
        if (freq[nums[i]] > 2)
            return false;
    }
    return true;
}
```
['Array', 'C', 'Counting']