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1_868_9077_12393.cpp: In function 'int main()':
1_868_9077_12393.cpp:5:7: error: 'cin' was not declared in this scope
 while(cin>>x>>y){
       ^
1_868_9077_12393.cpp:8:1: error: 'cout' was not declared in this scope
 cout<<a*b<<endl;
 ^
1_868_9077_12393.cpp:8:12: error: 'endl' was not declared in this scope
 cout<<a*b<<endl;
            ^


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