Compilare: main.cpp: In function 'int main()': main.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v.size()-4; i++) ~^~~~~~~~~~~ main.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=i+1; j<v.size()-3; j++) ~^~~~~~~~~~~ main.cpp:25:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (k=j+1; k<v.size()-2; k++) ~^~~~~~~~~~~ main.cpp:26:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (l=k+1;l<v.size()-1;l++) ~^~~~~~~~~~~ main.cpp:28:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (m=l+1;m<v.size();m++) ~^~~~~~~~~ main.cpp:14:15: warning: unused variable 'nrAux' [-Wunused-variable] long long nrAux,S; ^~~~~