Compilare: main.cpp: In function 'void arb(int, int)': main.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(u = 0; u < g[nod].size(); u++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:36:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(h = 0; h < g[nod].size(); h++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(h = 0; h < v[j].size(); h++) | ~~^~~~~~~~~~~~~