View Compilation Error

577719_0_0_16061.cpp: In function `int fun(int)':
577719_0_0_16061.cpp:6: error: `deque' undeclared (first use this function)
577719_0_0_16061.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
577719_0_0_16061.cpp:6: error: expected primary-expression before "int"
577719_0_0_16061.cpp:6: error: expected `;' before "int"
577719_0_0_16061.cpp:9: error: `save' undeclared (first use this function)
577719_0_0_16061.cpp: In function `int main()':
577719_0_0_16061.cpp:20: error: `cin' undeclared (first use this function)
577719_0_0_16061.cpp:26: error: `cout' undeclared (first use this function)
577719_0_0_16061.cpp:26: error: `endl' undeclared (first use this function)