Compilare: main.cpp: In function 'int dfs(int, int, int*)': main.cpp:38:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(;next[k]<v[k].size();next[k]++) | ~~~~~~~^~~~~~~~~~~~ main.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] 52 | } | ^