Compilare: main.cpp: In function 'int main()': main.cpp:47:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int j=0;j<a.size()-1;j++) | ~^~~~~~~~~~~ main.cpp:66:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<graf>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for(int i=0;i<g[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:107:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | for(int i=0;i<g1[x].size();i++) | ~^~~~~~~~~~~~~