Compilare: main.cpp: In function 'int sol1()': main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(int i=0;i<v[current].size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dijkstra()': main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int i=0;i<v[current.nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/12.2.1/string:50, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:1: In function 'constexpr const _Tp& std::min(const _Tp&, const _Tp&) [with _Tp = int]', inlined from 'int main()' at main.cpp:88:26: /usr/include/c++/12.2.1/bits/stl_algobase.h:235:15: warning: iteration 805 invokes undefined behavior [-Waggressive-loop-optimizations] 235 | if (__b < __a) | ~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:87:22: note: within this loop 87 | for(int i=0;i<=50001;i++) | ~^~~~~~~