Compilare: user.cpp: In function ‘void reet(int, int, int)’: user.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ user.cpp:16:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<v[x].size()&&((c[v[x][i]]!=oldc[x]&&c[v[x][i]]!=c[x])||v[x][i]==toxic)) ~^~~~~~~~~~~~ user.cpp:21:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i<v[x].size()) ~^~~~~~~~~~~~