Compilare: user.cpp: In function ‘int main()’: user.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < n; i++) ^ user.cpp:59:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < m; i++) ^ user.cpp:67:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( k == n - 1 ) ^ user.cpp:77:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < 1000 && i < positions.size()) ^