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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int k1,w1,k2,w2;
  6. cin >>k1>>w1>>k2>>w2;
  7. cout <<k1*w1+k2*w2;
  8. return 0;
  9. }
Success #stdin #stdout 0s 5268KB
stdin
Standard input is empty
stdout
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