Compilare: main.cpp: In function 'void Euler(int)': main.cpp:13:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 13 | while (poz[k] < edges[k].size()) | ~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:38:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 38 | if(sol.size()!=n) {fout<<0;return 0;} | ~~~~~~~~~~^~~ main.cpp:27:13: warning: unused variable 'x' [-Wunused-variable] 27 | int i,n,x,y,ct=0,start; | ^ main.cpp:27:15: warning: unused variable 'y' [-Wunused-variable] 27 | int i,n,x,y,ct=0,start; | ^