Compilare: main.cpp: In function 'void ford()': main.cpp:29:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int t = 0;t < ad[j].size();t++) | ~~^~~~~~~~~~~~~~ main.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for (int t = 0;t < ad[j].size();t++) | ~~^~~~~~~~~~~~~~ main.cpp:62:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for (int i = 0;i < ad[u].size();i++) | ~~^~~~~~~~~~~~~~