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 = 0;
int x = 0;
int count = 0;
scanf("%d %d", &n, &x);
int i = 0;
for (i = 0; i <= n; i++)
{
int p = i;
while (p)
{
if (p % 10 == x)
{
count++;
}
p /= 10;
}
}
printf("%d", count);
return 0;
}
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