View Compilation Error

1049787_0_0_12750.cpp:1: error: `__int64' does not name a type
1049787_0_0_12750.cpp: In function `int main()':
1049787_0_0_12750.cpp:4: error: `scanf' undeclared (first use this function)
1049787_0_0_12750.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
1049787_0_0_12750.cpp:6: error: `M' undeclared (first use this function)
1049787_0_0_12750.cpp:9: error: `printf' undeclared (first use this function)