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0_0_38884749_28704.cpp: In function 'int main()':
0_0_38884749_28704.cpp:6:4: error: 'cin' was not declared in this scope
    6 |    cin>>a>>b;
      |    ^~~
0_0_38884749_28704.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <cstdio>
  +++ |+#include <iostream>
    2 | using namespace std;
0_0_38884749_28704.cpp:7:4: error: 'cout' was not declared in this scope
    7 |    cout<<a+b;
      |    ^~~~
0_0_38884749_28704.cpp:7:4: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?