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  1. #include <stdio.h>
  2.  
  3. enum Sort {
  4.     ASCENDING,
  5.     DESCENDING
  6. };
  7.  
  8. void f(int arr[], int n, enum Sort order) {
  9.     for (int i = 0; i < n - 1; i++) {
  10.         for (int j = 0; j < n - i - 1; j++) {
  11.             if ((order == ASCENDING && arr[j] > arr[j + 1]) || (order == DESCENDING && arr[j] < arr[j + 1])) {
  12.                 int temp = arr[j];
  13.                 arr[j] = arr[j + 1];
  14.                 arr[j + 1] = temp;
  15.             }
  16.         }
  17.     }
  18. }
  19.  
  20. int main() {
  21.     int N;
  22.     scanf("%d", &N);
  23.  
  24.     int A[N], B[N];
  25.     for (int i = 0; i < N; i++) {
  26.         scanf("%d", &A[i]);
  27.     }
  28.     for (int i = 0; i < N; i++) {
  29.         scanf("%d", &B[i]);
  30.     }
  31.  
  32.  
  33.     f(A, N, ASCENDING);
  34.     f(B, N, DESCENDING);
  35.  
  36.     // S 값을 계산
  37.     int S = 0;
  38.     for (int i = 0; i < N; i++) {
  39.         S += A[i] * B[i];
  40.     }
  41.  
  42.     printf("%d\n", S);
  43.  
  44.     return 0;
  45. }
  46.  
Success #stdin #stdout 0.01s 5300KB
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https://ideone.com/CdnqpE
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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