Compilare: main.cpp: In function 'int main()': main.cpp:89:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<R.size();i++) v2[i+1]=v[R[i]]; ~^~~~~~~~~ main.cpp:91:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<R.size();i++) v[i+1]=v2[i+1]; ~^~~~~~~~~ main.cpp:98:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<R.size();i++) ~^~~~~~~~~ main.cpp:104:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<R.size();i++) v[i+1]={0,0,0}; ~^~~~~~~~~ main.cpp:105:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<R.size();i++) v[i+1]=v2[i+1]; ~^~~~~~~~~