Compilare: user.cpp: In function ‘int main()’: user.cpp:138:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < all.size(); i++) { ^ user.cpp:148:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < all.size(); i++) { ^ user.cpp:158:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < all.size(); i++) { ^ user.cpp:168:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < all.size(); i++) { ^ user.cpp:178:26: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n", sol[i]); ^