Compilare: main.cpp: In function 'void getDP(int)': main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp:22:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < G[node].size() - 1) { ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:28:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int len = 3; len <= G[node].size(); len++) { ~~~~^~~~~~~~~~~~~~~~~ main.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= G[node].size() - len; i++) { ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp:47:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < G[node].size() - 1) { ~~^~~~~~~~~~~~~~~~~~~~