Compilare: main.cpp: In function 'int dijkstra(int, long long int (&)[100005], int (&)[100005])': main.cpp:34:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | int cost = d[x] + v[x][i].second; | ~^~~~~~~~~~~~ main.cpp:28:33: warning: unused variable 'dx' [-Wunused-variable] 28 | | ^ main.cpp:45:1: warning: no return statement in function returning non-void [-Wreturn-type] 45 | | ^ main.cpp: In function 'int main()': main.cpp:80:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if (d1[v[n1][i].first] < d1[nod]) | ~^~~~~~~~~~~~~ main.cpp:95:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | if (d2[v[n2][i].first] < d2[nod]) | ~^~~~~~~~~~~~~ main.cpp:110:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | if (d3[v[n3][i].first] < d3[nod]) | ~^~~~~~~~~~~~~