Compilare: main.cpp: In function 'int mex(std::vector<int>)': main.cpp:21:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0; i < aux.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> solve(int)': main.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int j = 0; j < edges.size(); j++) { | ~~^~~~~~~~~~~~~~ In file included from /usr/include/c++/10/cassert:44, from main.cpp:3: main.cpp: In function 'int main()': main.cpp:89:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 89 | assert(edges.size() == m); | ~~~~~~~~~~~~~^~~~ main.cpp:93:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | for(int i = 0; i < perm.size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp:96:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int j = 0; j < g2[node].size(); j++) | ~~^~~~~~~~~~~~~~~~~