C++ :

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>

using namespace std;

int main()
{
    int k;
    scanf ("%d", &k) ;
    while (k--)
    {
        int n, a, b ;
        scanf("%d%d%d",&n,&a,&b);
        int t=(a+b)%n;
        if(t==0)
        {
            printf("%d\n",n);
            continue ;
        }
        if(t>=0)
            printf("%d\n",t);
        else
            printf("%d\n",n+t);
    }
    return 0;
}