Compilare: user.cpp: In function ‘int main()’: user.cpp:47:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<dif.size(); i++){ ^ user.cpp:59:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<lc.size();k++){ ^ user.cpp:61:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=k;i<lc.size();i++){ ^ user.cpp:74:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<dif.size(); i++){ ^ user.cpp:99:17: warning: ‘ans2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<ans1<<endl<<ans2<<endl<<difmin; ^ user.cpp:99:5: warning: ‘ans1’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<ans1<<endl<<ans2<<endl<<difmin; ^