Compilare: user.cpp: In function ‘int main()’: user.cpp:50:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+con<COM+CON && exp==c1+1 && x<=VERIF && VERIF<=y) COM=c1, CON=con; ^ user.cpp:50:71: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+con<COM+CON && exp==c1+1 && x<=VERIF && VERIF<=y) COM=c1, CON=con; ^ user.cpp:59:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c2+con<COM+CON && exp==c2+1 && x<=VERIF && VERIF<=y) COM=c2, CON=con; ^ user.cpp:59:71: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c2+con<COM+CON && exp==c2+1 && x<=VERIF && VERIF<=y) COM=c2, CON=con; ^ user.cpp:68:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+1+con<COM+CON && exp==c1+2 && x<=VERIF && VERIF<=y) COM=c1+1, CON=con; ^ user.cpp:68:73: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+1+con<COM+CON && exp==c1+2 && x<=VERIF && VERIF<=y) COM=c1+1, CON=con; ^ user.cpp:77:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+1+con<COM+CON && exp==c2 && x<=VERIF && VERIF<=y) COM=c2-1, CON=con; ^ user.cpp:77:71: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (c1+1+con<COM+CON && exp==c2 && x<=VERIF && VERIF<=y) COM=c2-1, CON=con; ^ user.cpp:30:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.in","r",stdin); ^ user.cpp:31:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taste.out","w",stdout); ^ user.cpp:34:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld", &x, &y); ^