Compilare: user.cpp: In function ‘int main()’: user.cpp:59:21: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> a[i] + 1 ; ^ user.cpp:90:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( vecini[i].size() < k ) ^ user.cpp:106:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( vecini[ *it ].size() < k && sel[ *it ] == false ) ^