Compilare: user.cpp:9:61: warning: narrowing conversion of ‘-1’ from ‘int’ to ‘long long unsigned int’ inside { } [-Wnarrowing] unsigned long long a[2002][2002],n,m,k,e,i,j,x[]={0,-1,0,1,0},y[]={0,0,1,0,-1},is,js,ie,je; ^ user.cpp:9:78: warning: narrowing conversion of ‘-1’ from ‘int’ to ‘long long unsigned int’ inside { } [-Wnarrowing] unsigned long long a[2002][2002],n,m,k,e,i,j,x[]={0,-1,0,1,0},y[]={0,0,1,0,-1},is,js,ie,je; ^ user.cpp: In function ‘void miscare()’: user.cpp:38:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ie2>n) ie2=1; ^ user.cpp:40:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(je2>m) je2=1; ^ user.cpp: In function ‘int main()’: user.cpp:129:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ok==-1) ^ user.cpp:147:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ok==-2) ^