Compilare: main.cpp:21:23: warning: integer constant is so large that it is unsigned unsigned long long dr=9223372036854775808LL,st; ^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:4:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pic.in","r",stdin); ^ main.cpp:5:30: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pic.out","w",stdout); ^ main.cpp:7:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&p,&n); ^ main.cpp:11:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&v[i][j]),tot=tot+v[i][j]; ^