0_0_19424497_23105.cpp: In function 'int main()':
0_0_19424497_23105.cpp:5:11: error: 'cin' was not declared in this scope
while(cin>>N&&N!=0)
^
0_0_19424497_23105.cpp:15:9: error: 'cout' was not declared in this scope
cout<<sum<<endl;
^
0_0_19424497_23105.cpp:15:20: error: 'endl' was not declared in this scope
cout<<sum<<endl;
^
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