题解

#include<bits/stdc++.h>
using namespace std;
int m,n,d,e,f,g,h,u,j,k;
int main(){
    int a,b,c;
    cin>>a;
    for(int i=1;i<=a;i++){
        b=i;
        while(b!=0){
            c=b%10;
            if(c==0){
                m++;
            }
            else if(c==1){
                n++;
            }
            else if(c==2){
                d++;
            }
            else if(c==3){
                e++;
            }
            else if(c==4){
                f++;
            }
            else if(c==5){
                g++;
            }
            else if(c==6){
                h++;
            }
            else if(c==7){
                u++;
            }
            else if(c==8){
                j++;
            }
            else{
                k++;
            }
            b/=10;
        }
    }
    cout<<"0,"<<m<<endl;
    cout<<"1,"<<n<<endl;
    cout<<"2,"<<d<<endl;
    cout<<"3,"<<e<<endl;
    cout<<"4,"<<f<<endl;
    cout<<"5,"<<g<<endl;
    cout<<"6,"<<h<<endl;
    cout<<"7,"<<u<<endl;
    cout<<"8,"<<j<<endl;
    cout<<"9,"<<k<<endl;
    return 0;
}