View Compilation Error

0_0_6872908_4313.cpp: In function `void solve(int)':
0_0_6872908_4313.cpp:35: error: `node' undeclared (first use this function)
0_0_6872908_4313.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6872908_4313.cpp:35: error: expected `;' before "ansp"
0_0_6872908_4313.cpp:45: error: `ansp' undeclared (first use this function)