View Compilation Error

0_0_10518872_21411.cpp:2: error: `_int64' does not name a type
0_0_10518872_21411.cpp: In function `int main()':
0_0_10518872_21411.cpp:16: error: `_int64' undeclared (first use this function)
0_0_10518872_21411.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10518872_21411.cpp:16: error: expected `;' before "i"
0_0_10518872_21411.cpp:18: error: `m' undeclared (first use this function)
0_0_10518872_21411.cpp:18: error: `n' undeclared (first use this function)
0_0_10518872_21411.cpp:21: error: `j' undeclared (first use this function)
0_0_10518872_21411.cpp:22: error: `i' undeclared (first use this function)
0_0_10518872_21411.cpp:23: error: `k' undeclared (first use this function)
0_0_10518872_21411.cpp:24: error: `w' undeclared (first use this function)