Compilare: main.cpp: In function 'int mex(std::vector<int>)': main.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i = 0; i < aux.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> solve(int)': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int j = 0; j < edges.size(); j++) { | ~~^~~~~~~~~~~~~~ main.cpp:77:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(int i = 0; i < perm.size(); i++) | ~~^~~~~~~~~~~~~ In file included from /usr/include/c++/10/cassert:44, from main.cpp:3: main.cpp: In function 'int main()': main.cpp:108:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 108 | assert(edges.size() == m); | ~~~~~~~~~~~~~^~~~ main.cpp:112:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 112 | for(int i = 0; i < perm.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:115:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for(int j = 0; j < g2[node].size(); j++) | ~~^~~~~~~~~~~~~~~~~