Compilare: main.cpp: In function 'std::vector<std::pair<long long int, int> > dijkstra(std::vector<std::vector<std::pair<int, int> > >&, int)': main.cpp:23:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0;i<graf[n].size();i++){ | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void reconstruim_lant(std::vector<std::pair<long long int, int> >&, int)': main.cpp:43:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=0;i<lant.size();i++){ | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:5:45: warning: overflow in conversion from 'double' to 'long long int' changes value from '+Inf' to '9223372036854775807' [-Woverflow] 5 | #define INF numeric_limits<double>::infinity() | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~ main.cpp:77:19: note: in expansion of macro 'INF' 77 | long long sum=INF,X=-1; | ^~~