2177_FindThreeConsecutiveIntegersThatSumtoaGivenNumber - a920604a/leetcode GitHub Wiki

class Solution {
public:
    vector<long long> sumOfThree(long long num) {
        // 1 2 3 -> 6
        // 2 3 4 -> 9
        // 3 4 5 -> 12
        // 4 5 6 -> 15
        vector<long long>  ret;
        if(num%3!=0) return ret;
        long long mid = num/3;
        return {mid-1, mid, mid+1};
        
    }
};