Compilare: main.cpp: In function 'void dfs1(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 dfs2(int, std::vector<int>&)': main.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<reversed[node].size(); i++){ ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calculate(int)': main.cpp:44:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<edge[c].size(); i++){ ~^~~~~~~~~~~~~~~ main.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=c; i<comp.size(); i++) ~^~~~~~~~~~~~ main.cpp: In function 'void solve(int)': main.cpp:58:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<edge[i].size(); j++){ ~^~~~~~~~~~~~~~~ main.cpp:63:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<comp.size(); i++){ ~^~~~~~~~~~~~ main.cpp:65:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<comp.size(); j++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<comp.size(); i++){ ~^~~~~~~~~~~~ main.cpp:116:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<comp[i].size(); j++) ~^~~~~~~~~~~~~~~