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  1. #include <cstdio>
  2.  
  3. int main() {
  4. int N, A, X, Y, hasil, hasil1, hasil2;
  5. scanf("%d %d %d %d",&N,&A,&X,&Y);
  6.  
  7. if (A < N) {
  8. hasil2 = N - A;
  9. hasil1 = A * X;
  10. hasil = hasil1 + hasil2 * Y;
  11. printf("%d", hasil);
  12. } else {
  13. hasil = A * X;
  14. printf("%d", hasil);
  15. }}
  16.  
Success #stdin #stdout 0s 5512KB
stdin
5 3 20 15
stdout
90