distance(Index1,Index2) {
    new User[2][MAX_NAME_LENGTH];
    new Vec[2][3];
    playerinfo(Index1,User[0],MAX_NAME_LENGTH);
    playerinfo(Index2,User[1],MAX_NAME_LENGTH);
    get_userorigin(User[0],Vec[0][0],Vec[0][1],Vec[0][2]);
    get_userorigin(User[1],Vec[1][0],Vec[1][1],Vec[1][2]);
    new i,j = 0,k = 0,l;
    for(i=0;i<3;i++) {
        if(Vec[0][i] > Vec[1][i]) {
            l = Vec[0][i] - Vec[1][i];
        } else {
            l = Vec[1][i] - Vec[0][i];
        }
        if(l > k) {
            k = l;
        }
        j += l * l;
    }
    i = j;
    while(j > k) {
        j = (j + k) / 2;
        k = i / j;
    }
    return j;
}