Compilare: user.cpp: In function ‘int main()’: user.cpp:22:38: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d",m==1000000000000?-1:m); ^ user.cpp:5:95: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitagora2.in","r",stdin),freopen("pitagora2.out","w",stdout),scanf("%d",&n),r=n*n; ^ user.cpp:5:95: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:95: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]