Compilare: user.cpp: In function ‘void muzicalitate(int, int)’: user.cpp:12:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ii=0; ii<v[i].size(); ii++) ~~^~~~~~~~~~~~ user.cpp:13:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(jj=0; jj<v[j].size(); jj++) ~~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:25:9: warning: unused variable ‘r’ [-Wunused-variable] int r=0,n=1,i,j,k,l; ^