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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. long long a,b,c,d;
  6. cin>>a;
  7. cin>>b;
  8. cin>>c;
  9. cin>>d;
  10. cout<<a+b+c-d;
  11. return 0;
  12. }
Success #stdin #stdout 0.01s 5528KB
stdin
7
4
4
15
stdout
Standard output is empty