[프로그래머스] 삼총사

 

• 풀이

#include <string>
#include <vector>

using namespace std;

int solution(vector<int> number) {
    int answer = 0;
    for(int i=0; i<number.size(); i++){
        for(int j=i+1; j<number.size(); j++){
            for(int k=j+1; k<number.size(); k++){
                if(number[i] + number[j] + number[k] == 0) answer++;
            }
        }
    }
    return answer;
}