Compilare: main.cpp: In function 'int main()': main.cpp:80:20: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=] 80 | fprintf( fout, "%d\n", rez.size() ); | ~^ ~~~~~~~~~~ | | | | int std::vector<int>::size_type {aka long unsigned int} | %ld main.cpp:37:34: warning: unused variable 'child' [-Wunused-variable] 37 | int n, m, x, y, i, a, b, node, child; | ^~~~~