Eroare de compilare: user.cpp: In function ‘void bf(int)’: user.cpp:24:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < A[x].size(); i++ ) { ^ user.cpp: In function ‘int main()’: user.cpp:111:13: error: ‘tmp’ was not declared in this scope tmp = y; ^ user.cpp:114:20: error: ‘tmp’ was not declared in this scope if (exista(tmp)) { ^ user.cpp:116:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sol.size() != (M+1)) { ^