Compilare: main.cpp: In function 'int main()': main.cpp:71:25: warning: format '%d' expects argument of type 'int', but argument 4 has type 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wformat=] 71 | fprintf(fout, "%d\n%d\n", max, solve.size()); | ~^ ~~~~~~~~~~~~ | | | | int std::vector<std::pair<int, int> >::size_type {aka long unsigned int} | %ld