>>108863588
class Solution {
public:
vector<int> twoSum(vector<int>& nums, int target) {
int n = nums.size();
for (int i = 0; i < n-1; i++) {
for (int j = i+1; j < n; j++) {
if (nums[i] + nums[j] == target) {
return vector<int>({i, j});
}
}
}
return vector<int>();
}
};