#include <iostream>
using namespace std;

int main()
{
    const int max_int = 2147483647;
    const int min_int = -max_int -1;
    int a, b;

    cout<<"\n* Inserisci il primo numero: ";
    cin>>a;
    cout<<"* Inserisci il secondo numero: ";
    cin>>b;

    cout<<"\n\tLa somma é: " <<a + b <<endl;
    cout<<"\tOverflow: ";

    if ( ( a > 0 && b < 0 ) || ( a < 0 && b > 0 ) )
    {
        cout<<"NO" <<endl;
        return 0;
    }
    if ( max_int - a > b && a > 0 ) || ( min_int - a > b && a < 0 )
        cout<<"NO" <<endl;
    else
        cout<<"SI" <<endl;

    return 0;
}