考查进制转换,用手算会快一些,2019/26=77…17,最低位就是Q(17),77/26=2…25,77表示为BY,答案为BYQ。
答案:BYQ
#include <bits/stdc++.h>
using namespace std;
int main()
{
string ans;
int num=2019;
while(num){
int i=num%26;
char c=('A'+i-1);
ans=c+ans;
num/=26;
}
cout<<ans;
return 0;
}