🐣 문제

링크 : https://www.acmicpc.net/problem/1026

🐥 코드

#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
using namespace std;

int main(){
  int N = 0; 
  cin >> N;

  vector<int> A; 
  vector<int> B;
  
  for(int i = 0; i < N; i++){
    int a = 0; 
    cin >> a;
    A.push_back(a);  
  }

  for(int i = 0; i < N; i++){
    int b = 0;
    cin >> b;
    B.push_back(b);
  }

  sort(A.begin(), A.end());
  sort(B.begin(), B.end(), greater<int>());

  int sum = 0;
  for(int i = 0; i < N; i++){
    sum += A[i] * B[i];
  }

  cout << sum;
  
  return 0; 
}