Compilare: main.cpp: In function 'void DFS(int)': main.cpp:27:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int l = 0; l < graph[nod].size(); l++ ) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:77:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int l = 0; l < C[co].size(); l++ ) { ~~^~~~~~~~~~~~~~ main.cpp:83:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int it = 0; it < C[ Csize[j].first ].size(); it++ ) { ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~