Compilare: main.cpp: In function 'void dfss(int)': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s[k].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void dfsp(int)': main.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<p[k].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<cc[i].size();j++) out<<cc[i][j]<<" "; ~^~~~~~~~~~~~~