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