Compilare: main.cpp: In function 'void dfs(int)': main.cpp:26:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[rad].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:38:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[rad].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:91:21: warning: 'rad' may be used uninitialized in this function [-Wmaybe-uninitialized] out << dp[rad][1]; ^