Compilare: user.cpp: In function ‘int main()’: user.cpp:27:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int conf = 1; conf < confmax; conf++) ^ user.cpp:30:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i <= P; i++) ^ user.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i < N; i++) ^ user.cpp:40:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1, t = 0; j < M; j++, t = !t) ^ user.cpp:42:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int conf = 1; conf < confmax; conf++) ^ user.cpp:45:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0; k < N; k++) ^ user.cpp:53:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int conf = 0; conf < confmax; conf++) ^