Submission #2714221


Source Code Expand

#include <cstdio>
int a,b,a1,a2,a3,b1,b2,b3,t,ans=-899; //差值最小为 -899 ,注意这里有负数 
int main(){
	scanf("%d%d",&a,&b);
	a1=a/100,a2=(a%100)/10,a3=a%10; //获取 a 的每一位 
	b1=b/100,b2=(b%100)/10,b3=b%10; //获取 b 的每一位
	//枚举修改哪一位
	//如果修改第一个数,就把其中某一位换成 9 (这显然是最大的)
	//如果修改第二个数,就把其中某一位换成 1或0 (注意百位不能为0) 
	t=(9*100+a2*10+a3)-(b1*100+b2*10+b3); if(t>ans) ans=t;
	t=(a1*100+9*10+a3)-(b1*100+b2*10+b3); if(t>ans) ans=t;
	t=(a1*100+a2*10+9)-(b1*100+b2*10+b3); if(t>ans) ans=t;
	t=(a1*100+a2*10+a3)-(1*100+b2*10+b3); if(t>ans) ans=t;
	t=(a1*100+a2*10+a3)-(b1*100+0*10+b3); if(t>ans) ans=t;
	t=(a1*100+a2*10+a3)-(b1*100+b2*10+0); if(t>ans) ans=t;
	printf("%d\n",ans); //题目要求输出答案后需要有一个换行,\n表示的是换行符 
}

Submission Info

Submission Time
Task A - A - B problem
User luogu_bot5
Language C++ (GCC 5.4.1)
Score 100
Code Size 897 Byte
Status AC
Exec Time 1 ms
Memory 128 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:4:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&a,&b);
                     ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 3
AC × 45
Set Name Test Cases
Sample sample_0.txt, sample_1.txt, sample_2.txt
All ansneg_0.txt, ansneg_1.txt, ansneg_2.txt, ansneg_3.txt, ansneg_4.txt, ansneg_5.txt, ansneg_6.txt, ansneg_7.txt, ansneg_8.txt, ansneg_9.txt, handmade_0.txt, handmade_1.txt, random_0.txt, random_1.txt, random_2.txt, random_3.txt, random_4.txt, random_5.txt, random_6.txt, random_7.txt, random_8.txt, random_9.txt, sample_0.txt, sample_1.txt, sample_2.txt, top2fixed_0.txt, top2fixed_1.txt, top2fixed_2.txt, top2fixed_3.txt, top2fixed_4.txt, top2fixed_5.txt, top2fixed_6.txt, top2fixed_7.txt, top2fixed_8.txt, top2fixed_9.txt, topfixed_0.txt, topfixed_1.txt, topfixed_2.txt, topfixed_3.txt, topfixed_4.txt, topfixed_5.txt, topfixed_6.txt, topfixed_7.txt, topfixed_8.txt, topfixed_9.txt
Case Name Status Exec Time Memory
ansneg_0.txt AC 1 ms 128 KB
ansneg_1.txt AC 1 ms 128 KB
ansneg_2.txt AC 1 ms 128 KB
ansneg_3.txt AC 1 ms 128 KB
ansneg_4.txt AC 1 ms 128 KB
ansneg_5.txt AC 1 ms 128 KB
ansneg_6.txt AC 1 ms 128 KB
ansneg_7.txt AC 1 ms 128 KB
ansneg_8.txt AC 1 ms 128 KB
ansneg_9.txt AC 1 ms 128 KB
handmade_0.txt AC 1 ms 128 KB
handmade_1.txt AC 1 ms 128 KB
random_0.txt AC 1 ms 128 KB
random_1.txt AC 1 ms 128 KB
random_2.txt AC 1 ms 128 KB
random_3.txt AC 1 ms 128 KB
random_4.txt AC 1 ms 128 KB
random_5.txt AC 1 ms 128 KB
random_6.txt AC 1 ms 128 KB
random_7.txt AC 1 ms 128 KB
random_8.txt AC 1 ms 128 KB
random_9.txt AC 1 ms 128 KB
sample_0.txt AC 1 ms 128 KB
sample_1.txt AC 1 ms 128 KB
sample_2.txt AC 1 ms 128 KB
top2fixed_0.txt AC 1 ms 128 KB
top2fixed_1.txt AC 1 ms 128 KB
top2fixed_2.txt AC 1 ms 128 KB
top2fixed_3.txt AC 1 ms 128 KB
top2fixed_4.txt AC 1 ms 128 KB
top2fixed_5.txt AC 1 ms 128 KB
top2fixed_6.txt AC 1 ms 128 KB
top2fixed_7.txt AC 1 ms 128 KB
top2fixed_8.txt AC 1 ms 128 KB
top2fixed_9.txt AC 1 ms 128 KB
topfixed_0.txt AC 1 ms 128 KB
topfixed_1.txt AC 1 ms 128 KB
topfixed_2.txt AC 1 ms 128 KB
topfixed_3.txt AC 1 ms 128 KB
topfixed_4.txt AC 1 ms 128 KB
topfixed_5.txt AC 1 ms 128 KB
topfixed_6.txt AC 1 ms 128 KB
topfixed_7.txt AC 1 ms 128 KB
topfixed_8.txt AC 1 ms 128 KB
topfixed_9.txt AC 1 ms 128 KB