Compilare: user.cpp: In function ‘int main()’: user.cpp:19:60: warning: operation on ‘q’ may be undefined [-Wsequence-point] if (k-a!=1) v.push_back(nr),dp[++q]=dp[q-1]+nr,nr=1; else nr++; ^ user.cpp:23:23: warning: operation on ‘q’ may be undefined [-Wsequence-point] dp[++q]=nr+dp[q-1]; ^ user.cpp:25:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v.size(); i++) ^