题解 | #[NOIP2013]记数问题#
[NOIP2013]记数问题
https://www.nowcoder.com/practice/28b2d9f2bf2c48de94a1297ed90e1732
#include <stdio.h>
//和第89题一模一样
int main() {
int n, x,count=0;
scanf("%d %d", &n, &x);
for(int i=1;i<=n;++i)
{
int m=i;
while(m>0)
{
if(m%10==x)
{
count++;
}
m/=10;
}
}
printf("%d",count);
return 0;
}
