Compilare: main.cpp: In function 'int main()': main.cpp:103:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("unific.in","r",stdin); ^ main.cpp:104:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("unific.out","w",stdout); ^ main.cpp:105:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &N); ^ main.cpp:107:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &a[k]); ^ main.cpp:111:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%lld", &a[++k]); ^ main.cpp: In function 'long long int unificare(long long int, long long int)': main.cpp:84:9: warning: 'uc' may be used uninitialized in this function [-Wmaybe-uninitialized] if (uc == 0) p /= 10; ^~