Compilare: user.cpp: In function ‘void Elimin(int)’: user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < st.size(); i++) { ^ user.cpp: In function ‘bool Solution(int64_t)’: user.cpp:59:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < st.size(); ++j) ^ user.cpp:61:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int t = 0; t < st.size(); ++t) { ^ user.cpp:73:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i != st.size() && dp[i] >= dp[i + 1]) ^ user.cpp:77:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pos < st.size() && TotDist(st[i], st[pos]) <= value) { ^ user.cpp:76:9: warning: unused variable ‘v’ [-Wunused-variable] int v = dp[i]; ^