Compilare: main.cpp: In function 'int main()': main.cpp:29:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (j = 0; j<v[q[i]].size(); j++) | ~^~~~~~~~~~~~~~~ main.cpp:37:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (j = 0; j<v[q[i]].size(); j++) | ~^~~~~~~~~~~~~~~ main.cpp:40:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (j = 0; j<v[q[i]].size(); j++) | ~^~~~~~~~~~~~~~~