Compilare: main.cpp:74:1: warning: multi-line comment [-Wcomment] // / \ ^ main.cpp: In function 'void dfs(long long int, long long int, long long int)': main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:43:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^