Compilare: main.cpp: In function 'void kruska2()': main.cpp:53:10: warning: unused variable 'suma' [-Wunused-variable] double suma; ^~~~ main.cpp: In function 'int main()': main.cpp:91:33: warning: narrowing conversion of 'distanta(j, k)' from 'int' to 'long long unsigned int' inside { } [-Wnarrowing] q.push({j,k,distanta(j,k)}); ~~~~~~~~^~~~~ main.cpp: In function 'void kruskal()': main.cpp:44:21: warning: 'suma' may be used uninitialized in this function [-Wmaybe-uninitialized] suma+=sqrt(q.top().d); ~~~~^~~~~~~~~~~~~~~~~