一个水题

#include<iostream>
using namespace std;
int main(){
	int n,x,ans=0;
	cin>>n>>x;
	for(int i=1;i<=n;i++){
		int tmp=i,num;
		while(tmp!=0){
			num=tmp%10;
			if(num==x){
				ans++;
			}
			tmp/=10;
		}
	}
	cout<<ans<<endl;
}

https://www.luogu.com.cn/record/78159837

本人完隐，看不到记录。

#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstdio>
#include<string>
#include<cstring>
using namespace std;
int n,x;
int res=0;
int main(){
	//freopen("count.in","r",stdin);
	//freopen("count.out","w",stdout);
	int tmp,tmp1;
	scanf("%d %d",&n,&x);
	for(int i=1;i<=n;i++){
		tmp=i;
		while(tmp!=0){
			tmp1 = tmp%10;
			if(tmp1==x){
				res+=1;
			}
			tmp/=10;
		} 
	}
	cout << res;
	//fclose(stdin);
	//fclose(stdout);
	return 0;
}