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;
int num = 0;
while (scanf("%d %d", &n, &x) != EOF)
{
for(int i = 1; i <= n; i++)
{
int j = i;
while(j)
{
if(j%10 == x)
{
num++;
}
j = j / 10;
}
}
printf("%d\n", num);
}
return 0;
}
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