0_0_13451135_12198.cpp: In function 'int main()':
0_0_13451135_12198.cpp:25:11: error: 'cin' was not declared in this scope
while(cin>>a>>b&&(a||b))
^
0_0_13451135_12198.cpp:28:9: error: 'cout' was not declared in this scope
cout<<ans<<endl;
^
0_0_13451135_12198.cpp:28:20: error: 'endl' was not declared in this scope
cout<<ans<<endl;
^
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