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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. int sum = 0;
  6. for(int i = -100; i <= 100; ++i){
  7. sum += i;
  8.  
  9. }
  10.  
  11. std::cout << sum;
  12. return 0;
  13. }
Success #stdin #stdout 0s 3340KB
stdin
Standard input is empty
stdout
Standard output is empty