Compilare: main.cpp: In function 'void dfspair(int, int)': main.cpp:67:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int i=0;i<adja[noda].size();i++) | ~^~~~~~~~~~~~~~~~~~ main.cpp:71:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | while(j!=adjb[nodb].size()&&visb[adjb[nodb][j]]) j++; | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:121:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 121 | for(int i=0;i<sa.size();i++) | ~^~~~~~~~~~