Compilare: main.cpp: In function 'void dfs2(int)': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<edge[node].size(); i++){ ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<edge[node].size(); i++){ ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calculate(int)': main.cpp:51:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<edge[c].size(); i++){ ~^~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:65:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<edge[i].size(); j++){ ~^~~~~~~~~~~~~~~