Compilare: main.cpp: In function 'void solve()': main.cpp:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[h1].size(); i++) ~^~~~~~~~~~~~~ main.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[h2].size(); i++){ ~^~~~~~~~~~~~~ main.cpp:49:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[h1].size(); i++){ ~^~~~~~~~~~~~~ main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[h1].size(); i++) ~^~~~~~~~~~~~~