View Compilation Error

1_549_435_16279.cpp:19: error: `LL' does not name a type
1_549_435_16279.cpp: In function `int main()':
1_549_435_16279.cpp:29: error: `t' undeclared (first use this function)
1_549_435_16279.cpp:29: error: (Each undeclared identifier is reported only once for each function it appears in.)
1_549_435_16279.cpp:29: error: `x' undeclared (first use this function)
1_549_435_16279.cpp:29: error: `y' undeclared (first use this function)