Compilare: user.cpp: In function ‘int main()’: user.cpp:76:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < xs.size(); ++i){ ^ user.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i != xs.size()-1 && d.st <= xs[i] && xs[i+1] <= d.dr){ ^ user.cpp:82:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < xs.size(); ++i){ ^ user.cpp:86:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i != xs.size()-1){ ^ user.cpp:95:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz == xs.size()){ ^ user.cpp:102:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz2 < drs.size() && drs[poz2].there(x, y)){ ^