Compilare: user.cpp: In function ‘int main()’: user.cpp:14:56: warning: ‘_j’ may be used uninitialized in this function [-Wmaybe-uninitialized] return k * (k - 1) * (2*k - 1) / 6 + (i - 1) * k + j; ^ user.cpp:22:48: note: ‘_j’ was declared here int N, i, j, k, n = 1, p, best = INFI, _i, _j; ^ user.cpp:14:45: warning: ‘_i’ may be used uninitialized in this function [-Wmaybe-uninitialized] return k * (k - 1) * (2*k - 1) / 6 + (i - 1) * k + j; ^ user.cpp:22:44: note: ‘_i’ was declared here int N, i, j, k, n = 1, p, best = INFI, _i, _j; ^