Compilare: user.cpp: In function ‘int main()’: user.cpp:14:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1; i <= N; ++i ) ^ user.cpp:17:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1; i <= NrP; ++i ) ^ user.cpp:20:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i < N; ++i ) ^ user.cpp:25:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int p = 0; p < NrP; ++p ) ^ user.cpp:29:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int j = 1; j <= N; ++j ) ^ user.cpp:33:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( j+P[p+1] <= N ) ^ user.cpp:40:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 1; i <= N; ++i ) ^