[프로그래머스 1] 행렬의 덧셈 (C/C++)

#include <string>
#include <vector>
using namespace std;
 
vector<vector<int>> solution(vector<vector<int>> arr1, vector<vector<int>> arr2) 
{
    vector<vector<int>> answer;
    
    for(int i = 0; i < arr1.size(); i++)
    {
        vector<int> v;
        
        for(int j = 0; j < arr1[i].size(); j++)
        {
            v.push_back(arr1[i][j]+arr2[i][j]);
        }
        
        answer.push_back(v);
    }
    
    return answer;
}