| 比赛 |
20150711暑期B班 |
评测结果 |
AAAAAAAAAA |
| 题目名称 |
计数问题 |
最终得分 |
100 |
| 用户昵称 |
Aeons |
运行时间 |
0.113 s |
| 代码语言 |
C++ |
内存使用 |
38.46 MiB |
| 提交时间 |
2015-07-11 09:07:02 |
显示代码纯文本
#include <fstream>
using namespace std;
int a[10]={0,1,2,3,4,5,6,7,8,9},b[10000001];
ifstream fin("count2013.in");
ofstream fout("count2013.out");
int main()
{
int n,x,jishu=0,i;
fin>>n>>x;
for(i=1;i<=n;i++)
{
b[i]=i;
if(b[i]<10)
{
if(b[i]==x)
jishu++;
}
if(b[i]>=10 && b[i]<=99)
{
if(b[i]%10==x)
jishu++;
if(b[i]/10==x)
jishu++;
}
if(b[i]>=100 && b[i]<=999)
{
if(b[i]%10==x)
jishu++;
if((b[i]%100-b[i]%10)/10==x)
jishu++;
if(b[i]/100==x)
jishu++;
}
if(b[i]>=1000 && b[i]<=9999)
{
if(b[i]%10==x)
jishu++;
if((b[i]%100-b[i]%10)/10==x)
jishu++;
if((b[i]%1000-b[i]%100)/100==x)
jishu++;
if(b[i]/1000==x)
jishu++;
}
if(b[i]>=10000 && b[i]<=99999)
{
if(b[i]%10==x)
jishu++;
if((b[i]%100-b[i]%10)/10==x)
jishu++;
if((b[i]%1000-b[i]%100)/100==x)
jishu++;
if((b[i]%10000-b[i]%1000)/1000==x)
jishu++;
if(b[i]/10000==x)
jishu++;
}
if(b[i]>=100000 && b[i]<=999999)
{
if(b[i]%10==x)
jishu++;
if((b[i]%100-b[i]%10)/10==x)
jishu++;
if((b[i]%1000-b[i]%100)/100==x)
jishu++;
if((b[i]%10000-b[i]%1000)/1000==x)
jishu++;
if((b[i]%100000-b[i]%10000)/10000==x)
jishu++;
if(b[i]/100000==x)
jishu++;
}
if(b[i]==1000000)
{
if(b[i]%10==x)
jishu++;
if((b[i]%100-b[i]%10)/10==x)
jishu++;
if((b[i]%1000-b[i]%100)/100==x)
jishu++;
if((b[i]%10000-b[i]%1000)/1000==x)
jishu++;
if((b[i]%100000-b[i]%10000)/10000==x)
jishu++;
if((b[i]%1000000-b[i]%100000)/100000==x)
jishu++;
if(b[i]/1000000==x)
jishu++;
}
}
fout<<jishu<<endl;
fin.close();
fout.close();
return 0;
}