Compilare: main.cpp: In function 'int main()': main.cpp:57:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<x.size();++i) ~^~~~~~~~~ main.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<y.size();++i) ~^~~~~~~~~ main.cpp:123:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(a<sep[i].size() and a1<sep[i+1].size()) ~^~~~~~~~~~~~~~ main.cpp:123:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(a<sep[i].size() and a1<sep[i+1].size()) ~~^~~~~~~~~~~~~~~~ main.cpp:133:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a==sep[i].size()-1) ~^~~~~~~~~~~~~~~~~ main.cpp:141:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a1==sep[i+1].size()-1) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:149:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a==sep[i].size()-1) ~^~~~~~~~~~~~~~~~~ main.cpp:154:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(a1==sep[i+1].size()-1) ~~^~~~~~~~~~~~~~~~~~~