Score : $100$ points
Takahashi melted and mixed $A$ grams of gold and $B$ grams of silver $(0 \leq A,B,\ 0 \lt A+B)$ to produce new metal.
What metal did he produce: pure gold, pure silver, or an alloy?
Formally, the product is called as follows.
Input is given from Standard Input in the following format:
If the product is pure gold, print
Gold; if it is pure silver, print
Silver; if it is an alloy, print
We have $0 \lt A$ and $0 \lt B$, so the product is an alloy.
We have $0 \lt A$ and $B=0$, so the product is pure gold.
We have $A=0$ and $0 \lt B$, so the product is pure silver.