View Compilation Error

2_16309_1140573_22869.cpp:5: error: `_int64' does not name a type
2_16309_1140573_22869.cpp:7: error: `ll' does not name a type
2_16309_1140573_22869.cpp:8: error: `ll' does not name a type
2_16309_1140573_22869.cpp:9: error: `ll' does not name a type
2_16309_1140573_22869.cpp: In function `int main()':
2_16309_1140573_22869.cpp:15: error: `n' undeclared (first use this function)
2_16309_1140573_22869.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
2_16309_1140573_22869.cpp:16: error: `f' undeclared (first use this function)
2_16309_1140573_22869.cpp:17: error: `g' undeclared (first use this function)