Compilare: user.cpp: In function ‘int uniune(int, int)’: user.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int dfs(int)’: user.cpp:72:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:165:42: warning: narrowing conversion of ‘minim’ from ‘int’ to ‘double’ inside { } [-Wnarrowing] muchie[i].push_back({j,minim}); ^ user.cpp:166:42: warning: narrowing conversion of ‘minim’ from ‘int’ to ‘double’ inside { } [-Wnarrowing] muchie[j].push_back({i,minim}); ^