View Compilation Error

0_0_25851227_27689.cpp: In function 'int main()':
0_0_25851227_27689.cpp:61:9: error: 'cout' was not declared in this scope
         cout<<maxxx<<endl;
         ^
0_0_25851227_27689.cpp:61:22: error: 'endl' was not declared in this scope
         cout<<maxxx<<endl;
                      ^