Compilare: main.cpp: In function 'int main()': main.cpp:25:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(j=0;j<V[a[i]].size();j++) ~^~~~~~~~~~~~~~~ main.cpp:36:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(k=0;k<V[a[i]].size();k++) ~^~~~~~~~~~~~~~~ main.cpp:40:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<V[a[j]].size();k++) ~^~~~~~~~~~~~~~~ main.cpp:42:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k1=0;k1<V[a[i]].size();k1++) ~~^~~~~~~~~~~~~~~ main.cpp:50:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {for(k=0;k<V[a[k2]].size();k++) ~^~~~~~~~~~~~~~~~ main.cpp:52:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<acum.size();k++) ~^~~~~~~~~~~~ main.cpp:54:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<V[a[k2]].size();k++) ~^~~~~~~~~~~~~~~~ main.cpp:56:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k1=0;k1<acum.size();k1++) ~~^~~~~~~~~~~~