Compilare: main.cpp: In function 'int main()': main.cpp:151:33: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<solutie>::size_type {aka long unsigned int}' [-Wformat=] fprintf(fout,"%d\n",sol.size()); ^ main.cpp:152:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<sol.size();i++){ ~^~~~~~~~~~~ main.cpp:58:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ main.cpp:61:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&x,&y); ^