Compilare: user.cpp:9:35: warning: integer constant is so large that it is unsigned [enabled by default] unsigned long long t[55][55], inf=9999999999999999999, dr, mij, st, sol; ^ user.cpp: In function ‘int main()’: user.cpp:54:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t[n][j]<c[n][j]) ^ user.cpp:12:14: warning: unused variable ‘ok’ [-Wunused-variable] int v, i, j, ok, sum=0; ^