Compilare: user.cpp: In function ‘int main()’: user.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (dp[j] != i + 1 && dp[j] != 0) ^ user.cpp:27:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (dp[j + v[i]] <= sum / 2) ^ user.cpp:39:46: warning: operation on ‘nr2’ may be undefined [-Wsequence-point] if (nr1 > nr2) nr1 = nr1 + nr2 - (nr2 = nr1); ^