Compilare: main.cpp: In function 'int main()': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp:34:63: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 34 | if(viz[next].first==0 || viz[next].second>ct+cost && next!=1) | ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~