Compilare: main.cpp: In function 'int main()': main.cpp:33:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("provocare.in","r",stdin); ^ main.cpp:34:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("provocare.out","w",stdout); ^ main.cpp:36:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ main.cpp:38:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&a,&b); ^ main.cpp: In function 'long long int rez()': main.cpp:23:31: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] long long st=1,dr=1LL<<60,mij,last; ^~~~