Compilare: main.cpp: In function 'void dfsnormal(int, int)': main.cpp:22:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q.size() > ct[qu[st]]) ~~~~~~~~~^~~~~~~~~~~~ main.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfsbuild(int, int)': main.cpp:39:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < fii.size(); ++i) ~~^~~~~~~~~~~~ main.cpp: In function 'void dfssolve(int, int, int*, int)': main.cpp:102:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp:122:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < fii.size(); ++i) ~~^~~~~~~~~~~~ main.cpp:138:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~