#include <fstream>
using namespace std;

ifstream cin("gradina.in");
ifstream cin("gradina.in");

struct s{
    int a,b;
} v[251];

int main()
{
    int n,a,b,i,rasp==0;
    string s;
    cin>>n;
    for(i=1;i<=n;i++){
        cin>>a>>b;v[i].a=a;v[i].b=b;
        rasp+=abs(a-b);
        if(a==b) s+='I';
        else s+='V';
    }
     for(i=1;i<=n;i++){
        rasp+=v[i].a+v[i].b;
        if(v[i].a<v[i].b) s+='I';
        else s+='V';
    }
    cout<<rasp<<" "<<s;
    return 0;
}