View Compilation Error

0_0_2740249_29791.cpp: In function `void solve()':
0_0_2740249_29791.cpp:35: error: `nx' undeclared (first use this function)
0_0_2740249_29791.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2740249_29791.cpp:35: error: expected `;' before '}' token