View Compilation Error

0_0_8970819_17979.cpp:16: error: `N' was not declared in this scope
0_0_8970819_17979.cpp: In function `void solve(int, int)':
0_0_8970819_17979.cpp:95: error: `sss' undeclared (first use this function)
0_0_8970819_17979.cpp:95: error: (Each undeclared identifier is reported only once for each function it appears in.)