Compilare: main.cpp: In function 'int main()': main.cpp:9:36: warning: unused variable 'maxx1' [-Wunused-variable] long long int n,m,i,j,k,maxx=0,maxx1=0,maxx2=0,l=0; ^~~~~ main.cpp:9:44: warning: unused variable 'maxx2' [-Wunused-variable] long long int n,m,i,j,k,maxx=0,maxx1=0,maxx2=0,l=0; ^~~~~ main.cpp:9:52: warning: unused variable 'l' [-Wunused-variable] long long int n,m,i,j,k,maxx=0,maxx1=0,maxx2=0,l=0; ^ main.cpp:7:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fadema.in","r",stdin); ^ main.cpp:8:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fadema.out","w",stdout); ^ main.cpp:10:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&n,&m); ^ main.cpp:15:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%lld",&v[i][j]); ^