Compilare: main.cpp: In member function 'int arbore::mindist(int, int)': main.cpp:80:13: warning: variable 'care' set but not used [-Wunused-but-set-variable] 80 | int care=-1; | ^~~~ main.cpp: In member function 'void arbore::output_minroad(int, int)': main.cpp:119:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 119 | for(int i=0;i<rez1.size();i++) | ~^~~~~~~~~~~~ main.cpp:132:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 132 | for(int i=0;i<rez4.size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:180:9: warning: unused variable 'cv1' [-Wunused-variable] 180 | int cv1,cv2,cv; | ^~~ main.cpp:180:13: warning: unused variable 'cv2' [-Wunused-variable] 180 | int cv1,cv2,cv; | ^~~ main.cpp:230:44: warning: 'cop' may be used uninitialized [-Wmaybe-uninitialized] 230 | long long mnm = INF, care1, care2, cop; | ^~~ main.cpp:230:37: warning: 'care2' may be used uninitialized [-Wmaybe-uninitialized] 230 | long long mnm = INF, care1, care2, cop; | ^~~~~ main.cpp:246:30: warning: 'care1' may be used uninitialized [-Wmaybe-uninitialized] 246 | int x = changes[care1]; | ~~~~~~~~~~~~~^ main.cpp:230:30: note: 'care1' was declared here 230 | long long mnm = INF, care1, care2, cop; | ^~~~~