Compilare: user.cpp: In function ‘int main()’: user.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < strlen(s); i++) { ^ user.cpp:50:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (dp[x] > strlen(s)) { ^ user.cpp:67:7: warning: unused variable ‘cost’ [-Wunused-variable] int cost = H.top().second; ^