Buy as many pens as possible, how to choose a good one?

………The beginning and read input are omitted).

n1=[** entered] 6;

n2=[input **] 5;

n3=[**] 4;

bool f=false;

for (i=1;i<=n1;i++)

for (j=1;j<=n2;j++)

for (k=1;k<=n3;k++)

if ((6*i+5*j+k*4)==[input**] )printf("%d %d %d",i,j,k); f=ture；Jumping out of the loop; }

if (!f)

Let's wrap it up for myself.

The above is an algorithm of the exhaustive method, so go and supplement the input and output by yourself.

Why do so many people ask this.

1. Slippery nib: Pull out the pen sleeve and take the nib to exercise on the white paper. Generally, the difficulty of grinding the nib is on the side, and we do experiments, using the pen 30 degrees on the left side and 30 degrees on the right side of the pen, moving on the white paper. If it is still smooth, it means that the slippage of this nib is guaranteed.

2. Water leakage: We can block the nib and squeeze the bile of the pen. If it feels difficult to squeeze, it is very resistant to water leakage. Of course, water leakage resistance is a comprehensive parameter.

Fountain pens are commonly used writing instruments, invented in the early 19th century. The nib is made of metal, which makes it sleek and elastic to write, and is quite smooth. At the mouth of the pen sleeve or on the surface of the nib, there are obvious trademark grades and models.

It is also divided into dipping fountain pens, tap fountain pens, and ink sac fountain pens.

Known as the most expensive fountain pen, it sells for 700,000 and no more than 50 in the world, why is it so expensive?

Now that fountain pens are the first choice for gifts, how can you choose a cost-effective fountain pen?

Although there are very few points, but since everyone likes pens, I will say a little more carefully, first of all, we must clarify the purpose, what do you buy a pen to write, usually use, sign or practice words, different purposes determine to use different, but also determine the thickness of the stroke requirements, and then the brand, a reliable brand is very important, and then there is the choice of bright tip or dark tip, this depends on the personal like, there is no absolute good or bad, and then it is the appearance, the pen is used to use, the appearance of their own like to use a little happy, Then pay attention to the smoothness of the nib, this should be grasped personally, not the more slippery the better, writing Chinese some scratch paper may be better, and then try how to grip, the general metal is not as good as plastic, because it is too slippery, too cold in winter, just say so much.

1.The quality control of domestic fountain pens is not good, and the quality is unstable - the quality of the same model can be very different every time you buy it.

2.If you write Chinese characters, Japanese fountain pens are more suitable than European and American pens - due to the differences between Western and Oriental characters, European and American fountain pens generally have thick nibs, slippery feels, and large water output, especially when used to practice calligraphy.

It is highly recommended to practice words: Baile 78g is about 40 pieces on the Internet, which is of high quality and low price, and the cost performance is very high. Fountain pen enthusiasts generally like to charge a few 78g even if they have a few famous pens of more than 1,000 yuan in their hands - if you don't believe it, you must buy the pens you listed (yes, they are all good pens, except for the hero will have the above problem 1) I also suggest that you might as well buy another 78g to feel it.

Don't think about practicing Pike and Lamy, thick, slippery, big out of the water, not suitable for writing Chinese characters, hero 100 is very good, you have to buy all-steel, or add some money to buy an old 100 before the 90s, the quality of the heroes of that era is very good, be careful of fakes, or immortal 101,400, etc., it's also very good, also be careful of fakes, as for the Baile 78g said upstairs, it's also very good, hero 616 is better, a few pieces of one, it's enough to practice words, buy a box online, pick a few good ones, enough for you to use for a long time, Note that the quality control of the current national pen is generally poor, and the quality control of the Japanese pen is very good, if the landlord has just practiced the word, it is recommended to use 616 or 78g, the gold tip is not suitable for beginners, it is difficult to control.