Compilare: main.cpp: In function 'int main()': main.cpp:62:26: warning: 'cd' may be used uninitialized in this function [-Wmaybe-uninitialized] q.push_back(make_pair(ld, cd)); ~~~~~~~~~^~~~~~~~ main.cpp:62:26: warning: 'ld' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:79:26: warning: 'cf' may be used uninitialized in this function [-Wmaybe-uninitialized] q.push_back(make_pair(lf, cf)); ~~~~~~~~~^~~~~~~~ main.cpp:79:26: warning: 'lf' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:47:26: warning: 'cs' may be used uninitialized in this function [-Wmaybe-uninitialized] q.push_back(make_pair(ls, cs)); ~~~~~~~~~^~~~~~~~ main.cpp:47:26: warning: 'ls' may be used uninitialized in this function [-Wmaybe-uninitialized]