Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= n; i++) ^ user.cpp:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= m; i++) { ^ user.cpp:28:73: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (distantza[x[i]] + C[i] < distantza[y[i]] && y[i] != K) ^ user.cpp:32:73: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (distantza[y[i]] + C[i] < distantza[x[i]] && x[i] != K) ^ user.cpp:52:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= n; i++) ^ user.cpp: In function ‘int main()’: user.cpp:75:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < (1 << k); i++) ^ user.cpp:84:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < (1 << k); i++) ^