0_0_20723958_7722.cpp:1:1: error: 'endl' does not name a type
endl
^
0_0_20723958_7722.cpp: In function 'int main()':
0_0_20723958_7722.cpp:11:9: error: 'cin' was not declared in this scope
cin>>s;
^
0_0_20723958_7722.cpp:28:5: error: 'cout' was not declared in this scope
cout<<ans<<endl;
^
0_0_20723958_7722.cpp:28:16: error: 'endl' was not declared in this scope
cout<<ans<<endl;
^
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