Compilare: main.cpp: In member function 'int arbore::mindist(int, int)': main.cpp:82:13: warning: variable 'care' set but not used [-Wunused-but-set-variable] 82 | int care=-1; | ^~~~ main.cpp: In member function 'void arbore::output_minroad(int, int)': main.cpp:123:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 123 | for(int i=0;i<rez1.size();i++) | ~^~~~~~~~~~~~ main.cpp:139:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | for(int i=0;i<rez4.size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:241:37: warning: 'care2' may be used uninitialized [-Wmaybe-uninitialized] 241 | long long mnm = INF, care1, care2; | ^~~~~ main.cpp:262:34: warning: 'care1' may be used uninitialized [-Wmaybe-uninitialized] 262 | arb[care2].output_minroad(changes[care1],b); | ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:241:30: note: 'care1' was declared here 241 | long long mnm = INF, care1, care2; | ^~~~~