Compilare: main.cpp: In function 'void solve()': main.cpp:43:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<v.size();i++){ ~^~~~~~~~~ main.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<v.size();i++) ~^~~~~~~~~ main.cpp:58:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<sol_ext.size();i++) ~^~~~~~~~~~~~~~~ main.cpp:60:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<sol_int.size();i++) ~^~~~~~~~~~~~~~~