View Compilation Error

59912_0_19503.cpp: In function `int main()':
59912_0_19503.cpp:10: error: `_int64' undeclared (first use this function)
59912_0_19503.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)
59912_0_19503.cpp:10: error: expected `;' before "max"
59912_0_19503.cpp:11: error: expected `;' before "sum"
59912_0_19503.cpp:14: error: invalid operands of types `int' and `<unknown type>' to binary `operator>'
59912_0_19503.cpp:14: error: overloaded function with no contextual type information
59912_0_19503.cpp:15: error: `sum' undeclared (first use this function)
59912_0_19503.cpp:17: error: invalid operands of types `int' and `<unknown type>' to binary `operator*'