CodeForces 620B Grandfather Dovlet’s calculator

水题

#include<cstdio>
#include<cstring>
#include<cmath>
#include<stack>
#include<vector>
#include<string>
#include<iostream>
#include<algorithm>
using namespace std;

int x[];

int main()
{
    int a,b;
    int ans=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;
    x[]=;

    scanf("%d%d",&a,&b);
    for(int i=a;i<=b;i++)
    {
        int num=i;
        while(num)
        {
            ans=ans+x[num%];
            num=num/;
        }
    }
    printf("%d\n",ans);
    return ;
}