Compilare: user.cpp: In function ‘void bs(int, int)’: user.cpp:22:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pos + step < V[1].size() && V[1][pos + step] < X) ^ user.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pos + 1 < V[1].size() && V[1][pos + 1] == X) ^ user.cpp: In function ‘void solve()’: user.cpp:46:9: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt = 0; bool ok = true; bool ok2 = false; int ret = 0; ^