Compilare: main.cpp: In function 'int main()': main.cpp:32:6: warning: unused variable 'i' [-Wunused-variable] {int i,start=1; ^ main.cpp: In function 'void dfs(int)': main.cpp:58:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<A[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void initializare()': main.cpp:123:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[start].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void prim()': main.cpp:141:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[pozmin].size();j++) ~^~~~~~~~~~~~~~~~~ main.cpp:148:29: warning: narrowing conversion of 'vfmin[i]' from 'long long int' to 'int' inside { } [-Wnarrowing] {A[i].push_back({vfmin[i],cmin[i]}); ~~~~~~~^ main.cpp:148:37: warning: narrowing conversion of 'cmin[i]' from 'long long int' to 'int' inside { } [-Wnarrowing] {A[i].push_back({vfmin[i],cmin[i]}); ~~~~~~^ main.cpp:149:37: warning: narrowing conversion of 'cmin[i]' from 'long long int' to 'int' inside { } [-Wnarrowing] A[vfmin[i]].push_back({i,cmin[i]}); ~~~~~~^