Compilare: user.cpp: In function ‘int solve()’: user.cpp:66:37: warning: variable ‘limit’ set but not used [-Wunused-but-set-variable] int i, x, y, j = 1, l, sum = 0, limit; ^ user.cpp:72:5: warning: ‘l’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (i = 0; i < l; ++i) ^