Level 1 내적

시간 복잡도: O(N)

1#include <string>
2#include <vector>
3using namespace std;
4
5int solution(vector<int> a, vector<int> b) {
6  int answer = 0;
7
8  const int SIZE = a.size();
9  for(int i=0; i<SIZE; ++i) answer += (a[i]*b[i]);
10
11  return answer;
12}