Compilare: main.cpp: In function 'long unsigned int Comb(unsigned int, unsigned int)': main.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < k; ++i) { ~~^~~ main.cpp: In function 'void solve()': main.cpp:42:38: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'long long unsigned int' [-Wformat=] fprintf(g,"%d:%lu\n",nrnr,ans); ^ main.cpp:35:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); /// citim n ^ main.cpp:43:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^