Compilare: main.cpp: In function 'int main()': main.cpp:111:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | if(ind[it]<g[it].size()) | ~~~~~~~^~~~~~~~~~~~~ main.cpp:139:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | while(ind[i]<g[i].size() && used[g[i][ind[i]]]==1) | ~~~~~~^~~~~~~~~~~~