Compilare: user.cpp: In function ‘bool not_overflow(long long unsigned int, int, int)’: user.cpp:33:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (x-- && p1 * base > p1) { ~~~~~~~~~~^~~~ user.cpp:37:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (y-- && p2 * base > p2) { ~~~~~~~~~~^~~~ user.cpp: In function ‘int main()’: user.cpp:115:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sol == -1) { ~~~~^~~~~ user.cpp:109:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &q); ^ user.cpp:113:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%lld", &n); ^