Compilare: user.cpp: In constructor ‘pSums::pSums(const std::vector<int>&)’: user.cpp:20:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < u.size(); ++i)v[i] = v[i - 1] + u[i]; ^ user.cpp: In function ‘long long int goRight(int, int)’: user.cpp:61:13: warning: unused variable ‘ret’ [-Wunused-variable] long long ret = 0; ^ user.cpp: In function ‘int main()’: user.cpp:106:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ranges.size() - 1; ++i)dif[i] = ranges[i + 1].first - ranges[i].second - 1; ^ user.cpp:107:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<ranges.size();++i)difL[i]=ranges[i].first-ranges[i-1].second-1; ^ user.cpp:88:7: warning: unused variable ‘curT’ [-Wunused-variable] int curT = 1; ^