Compilare: main.cpp: In function 'int main()': main.cpp:33:9: warning: variable 'bestCity' set but not used [-Wunused-but-set-variable] 33 | int bestCity = -1; | ^~~~~~~~ main.cpp:20:43: warning: 'n' is used uninitialized [-Wuninitialized] 20 | std::vector<std::vector<int>> graph(n + 1); | ~~^~~ main.cpp:19:9: note: 'n' was declared here 19 | int n; | ^