View Compilation Error

1_291_1280_7485.cpp:3: error: `_int64' does not name a type
1_291_1280_7485.cpp: In function `int main()':
1_291_1280_7485.cpp:6: error: `_int64i' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
1_291_1280_7485.cpp:6: error: `cnt' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `t' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `k' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `n' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `sum' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `tt' undeclared (first use this function)
1_291_1280_7485.cpp:6: error: `chushi' undeclared (first use this function)
1_291_1280_7485.cpp:10: error: `maxx' undeclared (first use this function)
1_291_1280_7485.cpp:15: error: `i' undeclared (first use this function)