Compilare: user.cpp: In function ‘int main()’: user.cpp:8:20: warning: unused variable ‘last’ [-Wunused-variable] int first = 1, last; ^ user.cpp:6:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ssm.in", "r", stdin); ^ user.cpp:7:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ssm.out", "w", stdout); ^ user.cpp:31:65: warning: ‘UtilityL’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << MAXIsum << " " << UtilityF + 1 << " " << UtilityL + 1; ^ user.cpp:31:42: warning: ‘UtilityF’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << MAXIsum << " " << UtilityF + 1 << " " << UtilityL + 1; ^