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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main(){
  5. int N,A,X,Y;
  6. cin >> N,A,X,Y;
  7. int rumus = X * A + Y * (N - A);
  8. cout << rumus << endl;
  9. }
  10.  
Success #stdin #stdout 0s 5432KB
stdin
5 3 20 15
stdout
0