# 10055 - Hashmat the Brave Warrior
> 作者: Aria
> 2023/10/24
## C語言
### 注意觀念
1. 印出long long int => %lld
2. 印出unsigned long long => %llu
3. 數字正數且不超過2的63次方時, 使用long long int
4. unsigned long long=[0,(2^64)-1]
5. long long int=[-((2^63)-1),+(2^63)+1]
[2]
### 程式碼

#include<stdio.h>
#include<stdlib.h>

unsigned long long different(unsigned long long a,unsigned long long b){
	if(a>b) return a-b;
	else if (a<b) return b-a;
}

int main(){
	unsigned long long a=0,b=0,output=0;
	while(scanf("%llu %llu",&a,&b)==2){
		output=different(a,b);
		if(output>=0) printf("%llu\n",output);
	}
	return 0;
} 

## Reference:
[1] 題目來源:[高中生程式解題系統](https://zerojudge.tw/ShowProblem?problemid=a012)
[2] [Programming languages -- C](https://port70.net/~nsz/c/c11/n1570.html#5.2.4.2.1)