Compilare: user.cpp: In function ‘int main()’: user.cpp:66:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < f[height].size(); i++) { ^ user.cpp:117:28: warning: ‘solutiony’ may be used uninitialized in this function [-Wmaybe-uninitialized] show(solutionx, solutiony); ^ user.cpp:117:28: warning: ‘solutionx’ may be used uninitialized in this function [-Wmaybe-uninitialized]