Compilare: main.cpp: In function 'std::vector<std::pair<long long int, long long int> > ic(std::vector<std::pair<long long int, long long int> >, int)': main.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<p.size(); ++i) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0,j=0; i+1<ls.size(); ++i) ~~~^~~~~~~~~~ main.cpp:66:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; id(ls[i],ls[i+1],lj[j]) && j<lj.size(); ++j); ~^~~~~~~~~~ main.cpp:67:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==lj.size()) ~^~~~~~~~~~~ main.cpp:73:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i+1<lj.size(); ++i) ~~~^~~~~~~~~~