Compilare: main.cpp: In function 'bool chain(int, int)': main.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for (int i = 0; i < v[b].size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < v[a].size(); ++i) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void calcCycles(int)': main.cpp:25:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int i = 0; i < v[node].size(); ++i) { | ~~^~~~~~~~~~~~~~~~ main.cpp:26:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int j = i + 1; j < v[node].size(); ++j) { | ~~^~~~~~~~~~~~~~~~