Compilare: main.cpp: In function 'int main()': main.cpp:77:39: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wformat=] 77 | fprintf(fout,"Exista solutie!\n%d\n",rez.size()); | ~^ ~~~~~~~~~~ | | | | int std::vector<std::pair<int, int> >::size_type {aka long unsigned int} | %ld main.cpp:73:8: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] 73 | dfs(l,c); | ~~~^~~~~ main.cpp:73:8: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]