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