Compilare: main.cpp: In function 'int main()': main.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int i=0; i<tuneluri.size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp:66:9: warning: 'varf_min' may be used uninitialized [-Wmaybe-uninitialized] 66 | if(varf_min > tata[varf_min]) cost[varf_min][tata[varf_min]] = -1; | ^~ main.cpp:39:9: note: 'varf_min' was declared here 39 | int varf_min, current_cost; | ^~~~~~~~