Compilare: main.cpp: In function 'int main()': main.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int u=0;u<cuv.size();++u) ~^~~~~~~~~~~ main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<cuv.size();++t) ~^~~~~~~~~~~ main.cpp:59:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cuv.size();++i) ~^~~~~~~~~~~ main.cpp:65:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=2;l<=cuv.size();++l) ~^~~~~~~~~~~~ main.cpp:67:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int x=0;x+l-1<cuv.size();++x) ~~~~~^~~~~~~~~~~