cartite.cpp: In function `void read()': cartite.cpp:61: parse error before `{' token cartite.cpp:62: `nod2' undeclared (first use this function) cartite.cpp:62: (Each undeclared identifier is reported only once for each function it appears in.) cartite.cpp:62: parse error before `{' token cartite.cpp: In function `void solve()': cartite.cpp:161: warning: comparison between signed and unsigned integer expressions